Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
BNAL wrote: I think mt Touch sounds better then the expensive power supply I was using. I guess you don't have a way to ABX against the standard power supply? Julf's Profile: http://forums.slimdevices.com/member.php?userid=42050 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Julf wrote: I guess you don't have a way to ABX against the standard power supply? easy enough to do. have another party change out the power supply without the users knowledge of which one and they can listen and note preferences in a double blind test. And yes, I'm suspicious in most reports of a new power supply creating noticeable differences (much less improvements, and of course they are always only improvements). Too much demand effect/bias here in sighted tests. garym's Profile: http://forums.slimdevices.com/member.php?userid=17325 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Have anyone used audio diff maker on the output of a Touch to objectively asses this ? ( I don't have good enough soundcard in my pc ) . It was done by several members for the SB3 , conclusion the signal out from the devices does not change at all . However a possible mechanism is interaction with your other equipment from the switch mode ps , in my case it would be unlikely as at least 5 other components in my hifi has switch mode power supply and thus are designed to cope with it . Some more exotic components may not be very well designed re rfi/emc . Was not that the design rationale behind the power supply John Swenson designed ? As such interaction can come from traditional power supplies to . There is to much subjective bias anyway as no one reports worse performance with any third party ps :) all linear power supplies are not good and switch mode power supplies are not inheritly bad . So why search for a cheap linear supply if one wants a cheap supply that is good ,switch mode is the obvius choice . Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Mnyb wrote: Was not that the design rationale behind the power supply John Swenson designed ? As such interaction can come from traditional power supplies to . There is to much subjective bias anyway as no one reports worse performance with any third party ps :) all linear power supplies are not good and switch mode power supplies are not inheritly bad . So why search for a cheap linear supply if one wants a cheap supply that is good ,switch mode is the obvius choice . There are two primary goals of my PS design, one is to radically reduce the noise injected back into the AC mains, and the other is that ripple presented to the regulator be a very clean almost pure sine wave. Even inexpensive regulators do very well with sine waves, and most regulators do poorly with the high frequency content provided by most supply designs. Most cheap linear supplies are frequently worse at these goals than good switchers, but some switchers are REALLY bad. Since there is so much variability between PS implementations it's hard to make generalizations. There is a group that has latched onto lab supplies. There is no guarnatee that a lab supply will be any better either. I have measured some lab supplies that inject just as much noise back into the mains as other supplies. And some are very good. But just going to ebay and getting the cheapest lab supply you can find is not going to guarantee good results. The regulators in the Touch itself are particularly prone to input noise in the 10KHz to 200KHz or so range, unfortunately a lot of the inexpensive PS designs have a fair amount of noise in this region. This is where special regulator designs such as the Teddy Regs etc shine, they ARE good at suppressing noise in these ranges. With my PS I produce a raw signal with almost nothing in this range so such regs are not usually needed. John S. JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
JohnSwenson wrote: There are two primary goals of my PS design, one is to radically reduce the noise injected back into the AC mains, and the other is that ripple presented to the regulator be a very clean almost pure sine wave. Even inexpensive regulators do very well with sine waves, and most regulators do poorly with the high frequency content provided by most supply designs. Most cheap linear supplies are frequently worse at these goals than good switchers, but some switchers are REALLY bad. Since there is so much variability between PS implementations it's hard to make generalizations. There is a group that has latched onto lab supplies. There is no guarnatee that a lab supply will be any better either. I have measured some lab supplies that inject just as much noise back into the mains as other supplies. And some are very good. But just going to ebay and getting the cheapest lab supply you can find is not going to guarantee good results. The regulators in the Touch itself are particularly prone to input noise in the 10KHz to 200KHz or so range, unfortunately a lot of the inexpensive PS designs have a fair amount of noise in this region. This is where special regulator designs such as the Teddy Regs etc shine, they ARE good at suppressing noise in these ranges. With my PS I produce a raw signal with almost nothing in this range so such regs are not usually needed. John S. +1 Some good thinking there Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Here's the exact power supply: http://www.parts-express.com/pe/showdetl.cfm?partnumber=120-536 jarrod2750's Profile: http://forums.slimdevices.com/member.php?userid=43132 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Has anyone considered using the power supplies from partsexpress.com. They have a couple where you can modify the voltage to match the touch. jarrod2750's Profile: http://forums.slimdevices.com/member.php?userid=43132 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Finally finished my power supply build using John Swanson's design. I used a beefier power supply from Triad, Teddy Pardo superteddyreg, and a felix power line filter. It's not yet burnt in but I think mt Touch sounds better then the expensive power supply I was using. I purchased that power supply years ago for my SB2. I'm using my Touch as a transport to feed my TubeDAC-11 via SPDIF. BNAL's Profile: http://forums.slimdevices.com/member.php?userid=2582 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut wrote: http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProductR=2243962 3 pin regulated linear o/p PSU,5-24V 18W It looks like it only supplies 2A I thought that would not be enough? I am also still interested in any power supplies such as the one above that can be bought in the UK. I have had a look at the schematics posted earlier in this thread but for me personally I don't know enough to attempt building this. If anyone has any links for any power supplies I could get in the UK that would be suitable I would be very grateful. At a reasonable price I am prepared to have a shot and see if it changes anything. Hi Try mark Grant cables or squeeze-upgrade.com. This supply works in my system. Blue blueye's Profile: http://forums.slimdevices.com/member.php?userid=21585 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
I just ordered the parts to make John's PS, but will use the SuperTeddyReg in place of the LT1084. The other change I made was to get a Triad VPS24-3300. Teddy Pardo recommends a minimum of 11VDC for the the SuperTeddyReg. BNAL's Profile: http://forums.slimdevices.com/member.php?userid=2582 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
JohnSwenson wrote: That supply is a 12V design, do NOT use it with the TOUCH! John S. Hi John, I use your design with an SBT I have here. I am going to build another but I see that the scematic link no longer works. Did you ever do any revisions to the original design? Are you still happy with it? I'm going to combine this with another 5V supply loop to power USB powered reclockers such as the AP2 as I can't be stuffed with battery mods. Regards AJ ajst2duk's Profile: http://forums.slimdevices.com/member.php?userid=56558 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Beetof. I have not started the build yet as I have another must have box to buy first - a Linn Tunebox (external x-over) so that I may take my Linn Ninkas active with Naim pre- and power amps. But I Will make sure to report back once I have bought the ingredients and have become a better solderer than I am now. I have started my training programme ... Best wishes, Peter Rosewind's Profile: http://forums.slimdevices.com/member.php?userid=33346 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Hey Peter, How's the build? Success? For the moment I'm using the Logitech PSU again, since I will take the Swenson to a shop for listening to the touch and the Lindemann dac with that psu on a reeeally good system. B.t.w. a cat will always favor sq; a black one will minimize noise (really black background). :) beetof's Profile: http://forums.slimdevices.com/member.php?userid=53809 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Rosewind wrote: Beetof. So are you using the John Swenson design or the Logitech Wall Wart? Bob. I see some interesting DIY projects in your signature. A modded Nap 250 and a Starfish DIY pre. Hmmm. Are you on PFM? I am about ready to buy the ingredients, only I am such a noob that I don't know how many of each part to get. But I'll take a hard look at it in a moment. I just had my first soldering and de-soldering session and I think that John Swenson's psu will just be the kind of project that I can manage to finish in style at this point. I've got all the tools, bar a lab psu, and will have a few test sessions before I go on to the real stuff. Best wishes, Peter Hi Peter, Yes, I'm using the John Swenson designed power supply. Good luck with you build and I only purchased the required number of components - they are fairly robust so you should be OK. Remember that you will need 4 of the Schottky rectifier diodes. I'm on PFM but not regularly now. My NAP 250 uses the bare pcb power boards supplied by 'Avondale' - I sourced all the components through Farnell and Radio Spares and took a long time to build the them (very carefully :) ) I also built the Starfish designed by Jiiim using his latest BOM sourcing components through Farnell Radio Spares again. I went straight to the full build and Jiiim was a real source of help and inspiration through PFM and via email. You would probably need contact him via PFM to get hold of his email address. I have a NAIM 32 pre a NAIM 72 pre and a NAIM Hi-CAP but exclusively use the Starfish powered by the Hi-Cap. The modded NAP 250 and Starfish have been in use solidly for at least two years now and I really haven't looked back. Both suit my ears and are excellent in use. Best wishes Bob bobertuk's Profile: http://forums.slimdevices.com/member.php?userid=30376 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Bob. So are you using the John Swenson design or the Logitech Wall Wart? I also see some interesting DIY projects in your signature. A modded Nap 250 and a DIY pre. Hmmm. I am about ready to buy the ingredients, only I am such a noob that I don't know how many of each part to get. But I'll take a hard look at it in a moment. I just had my first soldering and de-soldering session and I think that John Swenson's psu will just be the kind of project that I can manage to finish in style at this point. I've got all the tools, bar a lab psu, and will have a few test sessions before I go on to the real stuff. Best wishes, Peter Rosewind's Profile: http://forums.slimdevices.com/member.php?userid=33346 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Apesbrain wrote: There's also this: http://www.audioadvisor.com/prodinfo.asp?number=PGP100 Which just appeared in the most recent AA catalog. Not sure if it would work with the Touch, but looks promising and price is right. That supply is a 12V design, do NOT use it with the TOUCH! John S. JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Thanks guys! Very helpful indeed! I wonder what the part number is for the black cat? And what the sq effect of that is? Best wishes, Peter Rosewind's Profile: http://forums.slimdevices.com/member.php?userid=33346 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
There's also this: http://www.audioadvisor.com/prodinfo.asp?number=PGP100 Which just appeared in the most recent AA catalog. Not sure if it would work with the Touch, but looks promising and price is right. Apesbrain's Profile: http://forums.slimdevices.com/member.php?userid=738 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
beetof wrote: I build that PSU. Pictures attached. Temporaly you see two output cables with a different powerplug for testing. One for the Touch, one for my Lindemann DAC (I do not use them at the same time). The CR combination has been soldered directly on the transfo. Cables are tightly twisted. At the underside of the pcb, components are connected with a continuous wire. The diodes are mounted per two on a recycled heat sink (not really necessary, but ...). The regulator heatsink is minimal (smaller than the one prescribed); it warms up pretty much, but not too hot. Perhaps I will still change it. Some components are secured with silicone for safety and against vibration. The most important parts I got from Digikey. I think it's best to order from the Digikey site from your country, if it exists (digikey.dk?). Remember prices are without TVA. 237-1251- 159ZJ- 497-4627-5- LT1084CT-5#PBF- P6664- P12415-SC1051- Other components I ordered from Conrad.be. For you, Conrad.de will be the best perhaps. 547044 Black Panduit 531286 Heat-shrink tubing 546586 Fastener cordgrip preassembled 530753 EURO-PCB 160 X 100 540394 Aluminium mounting clip 502161 Split toroid core 520403 Half shell case GSS03 Switch Led + R - R depends if led is on entrance or output. Heat sink for regulator and evtl diodes 602094 Shielded mains cable Powerplug for Touch Silver solder Isolation for mounting of diodes Fuse: I used a 200mA slow in the mains Both sites offer free delivery under certain conditions. By the way, Conrad offers a good mains filter DIY-module for only 9,90 (max. 4A). But I build one myself of which I think it's better (based on the one from the Lampizator site). Three mains outlet in a cabinet, each with a filter. Pictures if desired. My first experience of the PSU, you can find here (bottom): http://forums.slimdevices.com/showthread.php?82648-Linear-Power-Supplies/page8 I pretty much built the same power supply for my Touch last week - I assume you built to the JohnSwenson design. I followed his design exactly apart from using the larger Triad transformer which he suggests using for 5amp output. I haven't put heatsinks on the Schottky diodes no fancy on/off switches or power indicator diodes either :) The power supply does seem to make a difference compared to using the stock supply - I have no idea why! My system sounds less edgy or aggressive - which is the way I like it. There's a lot of SMP's around my house which may be injecting noise into the mains - who knows! I use a plastic case supplied by Maplin Electronics. I couldn't get a decent aluminum case at a reasonable price that was large enough to accommodate the bigger transformer (much bigger!). Bob bobertuk's Profile: http://forums.slimdevices.com/member.php?userid=30376 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Hi there. I will want to build a psu for my SB Touch, and I have followed numeous threads on that exact topic in far too many forums - and now my head is spinning from all that information. Now, I have immense respect for John Swenson (and a few other regular contributors to this forum) and I would like to try to build John's PSU. Photos of the innards of one of an actual build of the John Swenson psu would be very helpful as would a BOM list (although I suppose you can easily glean that from the schematic?). Thanks! Best wishes, Peter Rosewind's Profile: http://forums.slimdevices.com/member.php?userid=33346 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Peter, I recently ordered parts for John's supply (thanks John). I was able to get everything from Mouser except the voltage regulator, which I got from Digikey; not sure it makes sense to order from these sources given your location. Anyway, here are the parts I ordered, with the Mouser part number and the manufacturer's number. I've included external connectors but no box or hook-up wire. PLEASE be sure to check the parts against the schematic as I might have screwed up! From Mouser.com: Mouser #: 553-VPS10-2500Mfr. #: VPS10-2500 Desc.: Power Transformers 25VA 10V CT @ 2.5A Mouser #: 546-159ZJ Mfr. #: 159ZJ Desc.: Power Inductors 10MH/5A FIL/CHOKE Mouser #: 511-STPS20120DMfr. #: STPS20120D Desc.: Schottky (Diodes Rectifiers) POWER S RECTIFIER Mouser #: 667-EEU-FM1V471 Mfr. #: EEU-FM1V471 Desc.: Aluminum Electrolytic Capacitor Mouser #: 667-ECO-S1VA103CA Mfr. #: ECO-S1VA103CA Desc.: Aluminum Electrolytic Capacitors - Snap In 10KuF 35V Mouser #: 667-EEU-FC1V121 Mfr. #: EEU-FC1V121 Desc.: Aluminum Electrolytic Capacitors - Leaded 120uF 35V Mouser #: 667-ECW-H8223HA Mfr. #: ECW-H8223HA Desc.: Polypropylene Film Capacitors 0.022uF 800volts 3% Mouser #: 588-OF331JE Mfr. #: OF331JE Desc.: Carbon Composition Resistors 1/2watt 330ohm 5% Carbon Comp Mouser #: 502-712A Mfr. #: 712A Desc.: DC Power Connectors 2.5MM ROUND W/NUT Mouser #: 502-760 Mfr. #: 760 Desc.: DC Power Connectors DC PWR PLG 0.100 1.42L, BLK HANDLE Mouser #: 693-4304.6090 Mfr. #: 4304.6090 Desc.: Power Entry Modules w/Fuseholder and Switch Mouser #: 576-0217001.HXP Mfr. #: 0217001.HXP Desc.: Fuses 250V 1A Fast Acting Mouser #: 532-531202B25GMfr. #: 531202B02500G Desc.: Heat Sinks TO-220 VERT 7.5 TR From Digikey.com Part #: LT1084CT-5#PBF-ND Desc: Voltage regulator IC LDO 5A 5V TO-220-3 Steidl Guitars's Profile: http://forums.slimdevices.com/member.php?userid=36334 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
That looks like the correct set of parts. For building it there are many ways to go. One of the recent photos online used terminal strips and soldered the parts to that. It works very well but takes some room in the box. Personally I would get a piece of perfboard that is big enough to fit everything (except the transformer and choke), including room for the heatsink. I just stick the pins of the parts through the holes in the perfboard and use bare tinned wire on the back side to connect the parts up. It's usually possible to come up with a parts placement so no wires have to cross over each other. With this design I would use at least 18 gauge wire. I don't go wacko with the wire, I just buy some 18 gauge tinned solid core wire at my local Fry's and strip the insullation off and solder it up. Leave the innsullation on of you need to cross wires. The 330 ohms resistor and .022uf cap solder directly onto the transformer pins Use a drill to enlarge holes for the heatsink pins and for mounting holes in the corners. I usually use nylon standoffs in the corners. I have built so many power supplies I don't have one built this way of this design right now. The one I'm running my Touch off right now is done using the terminal strip screwed into a piece of plywood approach. It doesn't look very nice, but it works! John S. JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
[image: http://i281.photobucket.com/albums/kk214/mudlark_57/IMG_1419.jpg] this is my squeezebox 3 power supply in a hi-fi2000 box. I like iec mains leads as the are safe from any damage to the mains cables. -- mudlark SB3CyrusDACXPreXvsESPAudio P09B Active filterNAP140+260ARhapsody, Avondale and Naim cable, Kubuntu Loony Lion servers, various boxes for storage. SB3 Flycatcher 3A linear power supply. Using SqueezeBox Server 7.5.2 testing mudlark's Profile: http://forums.slimdevices.com/member.php?userid=7151 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Thank you. Twisted sounds like the way to go. iPhone;570371 Wrote: Since its a DIY, you need a fuse for sure. But in my opinion you need a fast blow. At 3 amps on a small regulated supply, there shouldn't be any large inrush of current. Start with a fast blow. Should I include a fuse in the enclosure or would fitting a suitable fuse in the plug on the AC power chord suffice? Another possibly trivial thing I am unsure of is securely attaching the DC power connector to the dc power cable. What can I do to ensure that no strain is put on the solder join when unplugging and pluggin the cable into the touch? The DC connectors I found in Maplin do not have strain relief jackets with them. Many thanks -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Sorry Just spotted the link earlier in this thread it looks like it would do the job. -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;571977 Wrote: Thank you. Twisted sounds like the way to go. Should I include a fuse in the enclosure or would fitting a suitable fuse in the plug on the AC power chord suffice? Another possibly trivial thing I am unsure of is securely attaching the DC power connector to the dc power cable. What can I do to ensure that no strain is put on the solder join when unplugging and pluggin the cable into the touch? The DC connectors I found in Maplin do not have strain relief jackets with them. Many thanks 1) The fuse in UK Mains plugs is primarily to protect the cable from melting, not the equipment attached to the cable. I would fit a fuse in the enclosure. 2) Use heatshrink tubing over the joints inside the plug and again over the barrel of the connector+wire to give the joint mechanical integrity. You will need 2 different diameters of tubing. Available from Maplins. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend Supertweeters, Blue Jeans Digital,Kimber Speaker Chord Interconnect cables Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything. Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Many thanks again John. Phil Leigh;570300 Wrote: The DC connector is soldered and you should not use shielded cable - ordinary unshield twin-core will suffice. Anything that can take 5 amps would be fine. The mains should be hardwired with 5 amp 3-core flexible mains cable also. Alternatively you can use shielded mains cable (the shield of which is connected at the MAINS end ONLY. Is there a reason why the cable on the DC side should not be shielded? Would there be any benefit in using a shield which is connected to earth via the earth wire in the cable on the AC side? Many thanks. -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;571705 Wrote: Many thanks again John. Is there a reason why the cable on the DC side should not be shielded? Would there be any benefit in using a shield which is connected to earth via the earth wire in the cable on the AC side? Many thanks. I do not believe you will notice any difference. An alternative approach is to twist the cables a la Kimber. By all means try it. Just be careful not to accidentally create a ground loop by linking the 0V DC to mains earth ( or to accidentally short out the unit by connecting +5V DC to earth!) -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend Supertweeters, Blue Jeans Digital,Kimber Speaker Chord Interconnect cables Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything. Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
I am still interested in trying a regulated linear power supply for myself and see that Farnell do this : http://uk.farnell.com/power-one/hb5-3-ovp-ag/psu-open-frame-5v-3a/dp/1208815 * PSU, OPEN FRAME, 5V, 3A * Power Supply Output Type:Fixed * No. of Outputs:1 * Output Voltage:5V * Output Current:3A * Power Rating:15W * Input Voltage Range:100V AC / 120V AC / 220V AC / 230V AC / 240V AC * Length:53.34mm * Width:101.6mm * Height:123.7mm * Approval Bodies:CE / CSA / TUV / UL * External Depth:53.34mm * External Length / Height:123.7mm * External Width:101.6mm * Max Operating Temperature:50°C * Max Supply Frequency:63Hz * Max Supply Voltage:240V * Min Supply Frequency:47Hz * Min Supply Voltage:100V * Min Temperature Operating:0°C * Mounting Type:Chassis * Output Type:Fixed * Power Supply Type:Linear * Supply Voltage:230V It looks to be the same as the one in post #24 of this thread by Amuata who is offering two of these units. I am thinking about giving it a whirl but I have a few simple questions if anyone can jump in. - This is obviously meant to be mounted inside another chassis as it is an open frame design, would any Maplins metal enclosure do? - What sort of cable should I use for the DC side? Should it be shielded? light gauge? I note the link earlier in the thread for the switchcraft connector, are these soldered? - Should the AC side involve a power cable that plugs into the power supply and if so what connector would be recommended? Or should the power cable into the power supply be hardwired. Many thanks! -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;570290 Wrote: I am still interested in trying a regulated linear power supply for myself and see that Farnell do this : http://uk.farnell.com/power-one/hb5-3-ovp-ag/psu-open-frame-5v-3a/dp/1208815 * PSU, OPEN FRAME, 5V, 3A * Power Supply Output Type:Fixed * No. of Outputs:1 * Output Voltage:5V * Output Current:3A * Power Rating:15W * Input Voltage Range:100V AC / 120V AC / 220V AC / 230V AC / 240V AC * Length:53.34mm * Width:101.6mm * Height:123.7mm * Approval Bodies:CE / CSA / TUV / UL * External Depth:53.34mm * External Length / Height:123.7mm * External Width:101.6mm * Max Operating Temperature:50°C * Max Supply Frequency:63Hz * Max Supply Voltage:240V * Min Supply Frequency:47Hz * Min Supply Voltage:100V * Min Temperature Operating:0°C * Mounting Type:Chassis * Output Type:Fixed * Power Supply Type:Linear * Supply Voltage:230V It looks to be the same as the one in post #24 of this thread by Amuata who is offering two of these units. I am thinking about giving it a whirl but I have a few simple questions if anyone can jump in. - This is obviously meant to be mounted inside another chassis as it is an open frame design, would any Maplins metal enclosure do? - What sort of cable should I use for the DC side? Should it be shielded? light gauge? I note the link earlier in the thread for the switchcraft connector, are these soldered? - Should the AC side involve a power cable that plugs into the power supply and if so what connector would be recommended? Or should the power cable into the power supply be hardwired. Many thanks! The DC connector is soldered and you should not use shielded cable - ordinary unshield twin-core will suffice. Anything that can take 5 amps would be fine. The mains should be hardwired with 5 amp 3-core flexible mains cable also. Alternatively you can use shielded mains cable (the shield of which is connected at the MAINS end ONLY. Where cables enter the case you need rubber strain relief grommets. As for the case itself, If you use metal you must connect the case to mains earth via a nut/bolt, fitted with a suitable solder tag and star washer. Ventilation holes are required. If I was building this, I would add a ferrite to the DC cable (@ the Touch end) and also fit a mains filter across the mains inside the case, before the PSU and an LED indicator (with dropper resistor - 2-300 ohms should suffice) for power on. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue Jeans Digital,Kimber Speaker Chord Interconnect cables Kitchen Boom, Outdoors: SB Radio Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Phil Leigh;570300 Wrote: As for the case itself, If you use metal you must connect the case to mains earth via a nut/bolt, fitted with a suitable solder tag and star washer. Ventilation holes are required. If I was building this, I would add a ferrite to the DC cable (@ the Touch end) and also fit a mains filter across the mains inside the case, before the PSU and an LED indicator (with dropper resistor - 2-300 ohms should suffice) for power on. Many thanks for your reply! Could I use a plastic enclosure? It may be a little easier to work with if I need to make ventilation holes. I would be plugging the power supply into my Isotek Minisub GII mains filter so I guess I wouldn't need a mains filter inside the case? Thanks again! -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;570322 Wrote: Many thanks for your reply! Could I use a plastic enclosure? It may be a little easier to work with if I need to make ventilation holes. I would be plugging the power supply into my Isotek Minisub GII mains filter so I guess I wouldn't need a mains filter inside the case? Thanks again! The isotek won't block RFI collected by the cable between it and the new PSU. However, IF you use shielded mains cable, you won't need the filter. Yes you could use plastic (ABS). Probably need to consider siting the PSU well away from other stuff as the plastic won't block the magnetic field of the transformer... -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue Jeans Digital,Kimber Speaker Chord Interconnect cables Kitchen Boom, Outdoors: SB Radio Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;570322 Wrote: Many thanks for your reply! Could I use a plastic enclosure? It may be a little easier to work with if I need to make ventilation holes. I would be plugging the power supply into my Isotek Minisub GII mains filter so I guess I wouldn't need a mains filter inside the case? Thanks again! Question: Why spend $57 on a Power Supply when you already have one (plus the additional cost of end plug, cable, AC lead, enclosure and your time)? Sure it could be a fun hobby project but there is nothing to be gained. The reason I ask is there is no improvement over the OEM supply because there are internal switchers inside the Touch AFTER the 5 VDC input. I have run the Touch directly off a 6 VDC alarm battery and compared the Audio output to the OEM PS using AudioDiffMaker, there was no difference. Listening tests did not reveal any differences IE all of us heard absolutely no difference much less some night and day difference. -- iPhone *iPhone* Media Room: Transporter, VTL TL-6.5 Signature Pre-Amp, Ayre MX-R Mono's, VeraStarr 6.4SE 6-channel Amp, Vandersteen Speakers: Quatro Wood Mains, VCC-5 Reference Center, four VSM-1 Signatures, Video: Runco RS 900 CineWide AutoScope 2.35:1, Vandersteen V2W Subwoofer Living Room: Duet, ADCOM GTP-870HD, Cinepro 3K6SE III Gold, Vandersteen Model 3A Signature, Two 2Wq subs, VCC-2, Two VSM-1 Kitchen: Squeezebox BOOM Bedroom: Squeezebox BOOM Bathroom: Squeezebox Radio Ford Thunderbird: Duet, Mac Mini Ford Expedition: SB Touch, USB drive iPhone's Profile: http://forums.slimdevices.com/member.php?userid=13622 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;570322 Wrote: Many thanks for your reply! Could I use a plastic enclosure? It may be a little easier to work with if I need to make ventilation holes. I would be plugging the power supply into my Isotek Minisub GII mains filter so I guess I wouldn't need a mains filter inside the case? Thanks again! I would still suggest a mains filter as you are conecting it in parallell with other stuff on your isotek and it also reduces rfi from the mains cable . metal box shields even more . If you got no ground in the outlet where your stereo is ? Thats one of the cheapest and best upgrades you can ever do. But it hink grounded outlets are mandatory in for example uk ? -- Mnyb Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 and assorted amps SiriuS, Classe' Primare and Dynadio speakers, Contour 4 Contour Center, and Contour 1.3SE for the rear ch. Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: SB3 + powered Fostex PM0.4 Miscellaneous use: Radio (with battery) I use a Controller various ir-remotes and a Eee-PC with squeezeplay to control this Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Thanks again for the replies. Yes I have read several posts stating that there is nothing to gain but I have also read posts where people have reported gains so I want to see for myself. It is also a nice small project as I am trying to learn more about the basics of power supplies. All my kit is grounded and there is an earth terminal on the Isotek unit. I do intend to use a shielded mains cable for the power supply. I think that a metal case is probably best given your advise. Is there any other components that I would need or any safety points that I should be aware of? I notice that some schematics inclde a slow blow fuse. -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;570366 Wrote: Yes I have read several posts stating that there is nothing to gain but I have also read posts where people have reported gains so I want to see for myself. Yes you have read those, but not one is backed up with any measurements or data. Just that They think its night and day now. If I just spent as much as the Touch costs just for a Power Supply, I might think I heard a Night and Day difference too. Why would you put any stock in statements based on nothing but somebody's impression that is foolish enough to pay hundreds of dollars for an external power supply for a component that only costs $300? woodnut;570366 Wrote: I do intend to use a shielded mains cable for the power supply. I think that a metal case is probably best given your advise. On any DIY, I prefer a metal case that is grounded so as much interference as possible is taken to ground. woodnut;570366 Wrote: I notice that some schematics inclde a slow blow fuse. Since its a DIY, you need a fuse for sure. But in my opinion you need a fast blow. At 3 amps on a small regulated supply, there shouldn't be any large inrush of current. Start with a fast blow. -- iPhone *iPhone* Media Room: Transporter, VTL TL-6.5 Signature Pre-Amp, Ayre MX-R Mono's, VeraStarr 6.4SE 6-channel Amp, Vandersteen Speakers: Quatro Wood Mains, VCC-5 Reference Center, four VSM-1 Signatures, Video: Runco RS 900 CineWide AutoScope 2.35:1, Vandersteen V2W Subwoofer Living Room: Duet, ADCOM GTP-870HD, Cinepro 3K6SE III Gold, Vandersteen Model 3A Signature, Two 2Wq subs, VCC-2, Two VSM-1 Kitchen: Squeezebox BOOM Bedroom: Squeezebox BOOM Bathroom: Squeezebox Radio Ford Thunderbird: Duet, Mac Mini Ford Expedition: SB Touch, USB drive iPhone's Profile: http://forums.slimdevices.com/member.php?userid=13622 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
I would use heatshrink tubing over all of your soldered connections inside the case as an additional safety measure - to make them mechnically secure. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue Jeans Digital,Kimber Speaker Chord Interconnect cables Kitchen Boom, Outdoors: SB Radio Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
A couple more things. Make sure you mount it as shown in the picture. The frame is the heatsink and it needs to be properly oriented to cool properly. Make sure the box is high enough internally for that. The spec says its 123.7mm high, make sure the box can hold that. The box must have ventilation holes directly over the frame so warm air goes up and out without having to bend around inside the box. These supplies can get pretty warm, you don't want them to cook. The transformers in these can vibrate at line frequency which for someone who is trying to get the absolute best out of a sound system is probably not a good thing. I would recommend either using rubber washers between the box and frame, or some double sided foam tape between them. (I personally use the double sided foam tape approach, it works very well) The material for the box is an interesting subject. A number of people like to use steel because of its magnetic shielding properties, but unfortunately most steels used for enclosures actually have lousy magnetic properties. This usually means you need fairly thick steel (not the common very thin sheet metal). My favorite material these days is thick aluminum. By thick I mean 1/4 inch or thicker. THICK aluminum actually has pretty good magnetic shielding characteristics (due to eddy currents) without the saturation problem of steel. Unfortunately its rather hard to find enclosures with 1/4 thick walls! (they actually do exist, but not dirt cheap or easy to find) Given you are going to buy it from a normal distributer I would go for a fairly thick wall steel one if you can find it. With lots of holes in the top. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProductR=2243962 3 pin regulated linear o/p PSU,5-24V 18W It looks like it only supplies 2A I thought that would not be enough? I am also still interested in any power supplies such as the one above that can be bought in the UK. I have had a look at the schematics posted earlier in this thread but for me personally I don't know enough to attempt building this. If anyone has any links for any power supplies I could get in the UK that would be suitable I would be very grateful. At a reasonable price I am prepared to have a shot and see if it changes anything. -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
adamdea;560309 Wrote: Sorry to pester you, but did you see the link I posted on the last page. I would value your view on whether that might work for those of us too dumb/ lazy to make our own and too mean to pay for a 250 quid job Not quite sure whom you were 'pestering' here, but if it was me then the answer is 'yes, it will work' in the sense that properly terminated it will power the Touch, assuming power-consuming USB peripherals are not being used. However I really cannot say if it will offer any appreciable sound quality improvement over the original wall-wart. If you try it please let us know how you get on. -- struts struts's Profile: http://forums.slimdevices.com/member.php?userid=14057 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
struts;560475 Wrote: Not quite sure whom you were 'pestering' here, but if it was me then the answer is 'yes, it will work' in the sense that properly terminated it will power the Touch, assuming power-consuming USB peripherals are not being used. However I really cannot say if it will offer any appreciable sound quality improvement over the original wall-wart. If you try it please let us know how you get on. I am toying with it. I think they might do a 36w 4a version too. To my uneducated eye it looked like a high quality product .Although -at nearly 60 quid plus the price of termination- it's not cheap as chips, it is a lot less than the audiophile power supplies. The specs looked good to me too (although I confess to knowing bugger all). Incidentally I chatted today with Brent at audio upgrades who is working on a squeezebox ps and mods for the touch. He was of the view that he could do similar mods to those on the classic. Interestingly a) he thought they should be done prior to getting a linear power supply and b) he was undeterred by the suggestion that the touch might be too small and fiddly to work with inside. I had no joy trying to buy the bolder cables recommended unit. -- adamdea adamdea's Profile: http://forums.slimdevices.com/member.php?userid=37603 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
That PS is probably going to get very hot. In a linear PS the raw voltage before the regulator has to be some voltage above the regulated voltage. In this design it has to be somewhat greater than 24V, the max for this supply. Since you will only be using 5V out, the whole rest of that voltage goes up as heat. We are talking 20-30 watts in this case, thats going to get REALLY hot in that small a box. I would recommend a supply designed specifically for 5V, it won't need to dump excess voltage. Its very hard to tell by just looking at a picture or normal specs whether supply is going to sound better than the supply that comes with the Touch. With the SB3 it was easy, ANYTHING sounds better than the piece of junk that came with it. But the PS with the Touch is much better, the result is that some linear supplies are actually going to sound worse. And you can't tell by just looking, checking price etc. By looking at the specs you can tell whether its going to WORK, but there is no way to tell if its going to sound better. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
JohnSwenson;557729 Wrote: The switcher that came with the SB3 was very poor. It radiated a lot of noise, AND sent a lot of noise back down into the AC main as well. There was some going into the SB3 as well, but my findings were that the radiated noise and the noise sent into the mains was usually far more of a problem. The switcher that comes with the Touch is much better, it produces a lot less contamination of the environment. But its not perfect. A properly designed linear supply can still produce a lower noise environment. Note I'm not talking about the actual signal coming out of the Touch. My measurements show very little effect on the signal out from the PS quality. The Touch has a much better power supply immunity than the SB3. Unfortunately linear supplies are not created equal. Some can still produce radiated noise and send noise back into the mains. Its definitely possible to have a linear supply that will sound worse than the switcher that comes with the Touch. Because of this I'm not very hot on getting a cheap linear supply. While they probably can improve the sound of an SB3, (ANYTHING will improve the sound over that thing that came with the SB3) there is a good chance they would actually make the Touch sound worse. Price is not necessarily a good harbinger either. There are some expensive supplies that still send a fair amount of noise back into the mains. If you are going to get an expensive one make sure you can audition it first, or get a money back guarantee. Note that I build my own supplies so I have NOT bought commercially available ones, I cannot say which ones are good or not, don't ask. If you are a hard core audiophile and like to tweak things to get the absolute best sound possible, go ahead and try linear supplies. (I have a design for a really good one if you are interested in making your own.) If not, just use the supply that came with the Touch. John S. Hello John, you think adding a ferrite core on the SB3 power supply cord like the Touch cord has, could help. I wrapped the cord a few times around a ferrite cylinder and found it to make a difference. -- Eriko Eriko's Profile: http://forums.slimdevices.com/member.php?userid=38520 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Do you think one of these might work? Obviously it requires termination http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProductR=2243962 -- adamdea adamdea's Profile: http://forums.slimdevices.com/member.php?userid=37603 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
JohnSwenson;558905 Wrote: Here is the design: http://johnswenson1.home.comcast.net/stereo/SB_5V.GIF Looks like a fun little project John, I'm interested to have a crack at it. Couple questions: 1. Sorry if this is a stupid one but what is the KK1 SK104? 2. Have you made a board for this or do you just wire it up on a stripboard? If the former do you have a Gerber file or even a spare board you would be prepared to sell? JohnSwenson;558905 Wrote: The Hammond choke is a little hard to find Mouser stocks everything specified on the schematic (including the Hammond choke) except the Linear Technologies reg. They stock a Diodes Inc. version, but based on your comments I assume that is probably best avoided. The LT part is in stock at Digi-Key at $8 however I managed to snag a handfull in the TO-3P package at about half that from a fleabay seller in Poland. Result! -- struts struts's Profile: http://forums.slimdevices.com/member.php?userid=14057 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
struts;560274 Wrote: 1. Sorry if this is a stupid one but what is the KK1 SK104? 2. Have you made a board for this or do you just wire it up on a stripboard? If the former do you have a Gerber file or even a spare board you would be prepared to sell? 1: thats just the identifier for the heatsink. It was called SK104 in the heatsink library. I wanted to make sure the heatsink showed up in the schematic since it would burn up without it. 2: I never built a board for these, I just build them on terminal strips screwed into plywood. Really hi-tech! Perfboard would be fine. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Sorry to pester you, but did you see the link I posted on the last page. I would value your view on whether that might work for those of us too dumb/ lazy to make our own and too mean to pay for a 250 quid job -- adamdea adamdea's Profile: http://forums.slimdevices.com/member.php?userid=37603 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Thanks to you both! -- tonyptony tonyptony's Profile: http://forums.slimdevices.com/member.php?userid=3397 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Following the advice of Wayne at Boulder Cable (the thread is on Audio Circle), I bought a refurbished Elpac WM220-1 (5 and 12VDC, rated at 22 watts!) for $46 plus shipping. I spliced in a plug that mates with the Touch, otherwise I've done no power supply mods so far (the WM220 is very open and the circuit board accessible, so mods will be easy). Apparently some WM220s can buzz, but mine did not... buyer beware! I never know what to expect with something like this, and most of the time I do it from a more beef in the power supply can't hurt point of view, but this time the results were quite nice. The dominant effect was clearly increased dynamics. With the Touch driven by the Elpac, instrumental attacks had a sharper edge and the music was more fun and engaging; driven by the stock supply it was more polite, more recessed, less interesting. There may also be more inner detail with the WM220, but to date (to my ears, with the music I've listend to so far, etc.) the effect is not large. Peter -- psp psp's Profile: http://forums.slimdevices.com/member.php?userid=37712 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
psp;559784 Wrote: I spliced in a plug that mates with the Touch Peter, do you have a part number for this? -- tonyptony tonyptony's Profile: http://forums.slimdevices.com/member.php?userid=3397 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
tonyptony;559859 Wrote: Peter, do you have a part number for this? switchcraft 502-760 http://www.mouser.com/ProductDetail/Switchcraft/760/?qs=sGAEpiMZZMu2f9RNbWupYubSmEXlq6O0Wd4VeTPXD68%3d -- kgturner kgturner's Profile: http://forums.slimdevices.com/member.php?userid=8214 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
I had a couple of them custom made for some other work I had to do. One is left over. It's been such a long time that I think it's 8VAC out. it might be 10. I'll have to check the documentation, assuming I can find it! -- tonyptony tonyptony's Profile: http://forums.slimdevices.com/member.php?userid=3397 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Maplins sell a regulated linear power supply with variable voltage. I used one with a SB3 for a couple of years. Its nearest variable voltage is 4.5v. My SB3 didn't notice a 0.5v drop. -- KeithL KeithL's Profile: http://forums.slimdevices.com/member.php?userid=9272 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
If anyone is interested I have two Power-One 5V/3A power supply's. I used them for my SB2's, and do not need them anymore. If you are interested contact me with a PM please. They have 220 Volt configuration but can also operate at 120 Volts. +---+ |Filename: power02.jpg | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=10214| +---+ -- Amauta SqueezeboxServer 7.5.0 on Qnap TS-119. 3x Squeezebox2, 1 Squeezebox Classic, 2x BOOM - excellent sound!, One little RED Radio 'Last.FM' (http://www.last.fm/user/Squeezebox_II/) Amauta's Profile: http://forums.slimdevices.com/member.php?userid=2669 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
JohnSwenson;559023 Wrote: Its the LT1084, very much still in production. I just checked Digikey and they have 384 in stock. I use half watt carbon composition for R1 and polypropylene orange drop for C1. John S. I gotta get new glasses! :-) -- tonyptony tonyptony's Profile: http://forums.slimdevices.com/member.php?userid=3397 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
tonyptony;559149 Wrote: I gotta get new glasses! :-) How about adding a LED for power on indication? Would that effect the output in any way? I also have a beautiful 8VAC output R-Core transformer from Japan. Apart from having to drop the output voltage a bit, where do you think the differences would be (measurement-wise) if I used something like this? 8VAC is too low for this circuit. Unless its two 8V windings, which you could put in series. This would work, but you would need a bigger heatsink. An LED is fine, it wouldn't change anything. I love R core transformers, where did you get it? John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Tripmaster;557737 Wrote: Hi John I'll bite...would it be possible to post a schematic of your favoured supply? :) Thanks Here is the design: http://johnswenson1.home.comcast.net/stereo/SB_5V.GIF As shown its good for up to 2A load which should be fine for a Touch by itself. If you want to go with an external USB drive its probably best to go with a beefier transformer. The VPS20-2200 should do (with the secondaries in parallel) or if you really want to go with the big monster the VPS20-4000 (secondaries in parallel). The Hammond choke is a little hard to find, but do NOT leave it out, its the heart of the design. With the choke the max current pulse through the transformer is many many times less than it would be if it was just a cap input filter. This radically cuts down on noise sent back into the mains. Also whats going into the regulator is almost a pure sine wave, no high frequency harmonics. This means the regulator can easily filter the ripple out. With a single cap filter there are large amounts of high frequencies going to the regulator. The off the shelf IC regulators are not so great at filtering out these high frequency components, which is one of the reasons for the complicated discrete regulator designs popular with some audiophole designs. In this design you are adding a fairly expensive choke ($25-$35) and a simple cheap regulator VS simple cap filter and complex expensive regulator. I went with the simple approach. This is a very carefully tuned designe so be very careful with using different parts, even things such as different brand or model caps can change the behavior significantly. If at all possible I would stick with the specified transformers. They are good quality transformers with high isolation between primary and secondary and don't cost a lot. Its probably going to cost 4 times as much to find a transformer that will outperform these. Have fun, John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
John, what cap type is C1? And what about R1? -- tonyptony tonyptony's Profile: http://forums.slimdevices.com/member.php?userid=3397 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
bigbwb;558890 Wrote: This is my thread I started recently on the same topic. http://www.audiocircle.com/index.php?topic=82815.0 As of now, the PE PS arrived today, I am awaiting the arrival of the new resistor to make the 6v setting 5v instead. My father in law is an EE and will do the surgery:) Trust me, I was very skeptical about adding an aftermarket PS but a buddy of mine plus many other Touch/SB owners felt this one helps a bit. For $30 or so shipped with the connector kit, its a no brainer to try at least. Good luck! Brandon Glad to hear you have an open mind after spending money that you probably didn't need to. The Touch has internal switchers inside it after the DC Mains (even for the 5VDC power) so adding a linear power supply should have no affect whatsoever unless ones OEM PS stopped working! The external 5VDC goes to an internal switcher to be stepped up to 10VDC so it can be regulated with an internal linear 5VDC PS. Seems kind of silly to go from AC mains to External Linear 5VDC PS then stepped up internal switching 10VDC to internal linear 5VDC. So I see four reasons to upgrade the OEM supply. The OEM supply no longer works, is causing a ground loop issue, is putting noise into other equipment, or one just has extra money laying about that one doesn't want to spend on CDs instead. -- iPhone *iPhone* Media Room: Transporter, VTL TL-6.5 Signature Pre-Amp, Ayre MX-R Mono's, VeraStarr 6.4SE 6-channel Amp, Vandersteen Speakers: Quatro Mains, VCC-5 Reference Center, four VSM-1 Signatures, Video: Runco RS 900 CineWide AutoScope 2.35:1 Living Room: Duet, ADCOM GTP-870HD, Cinepro 3K6SE III Gold, Vandersteen Model 3A Signature, Two 2Wq subs, VCC-2, Two VSM-1 Kitchen: Squeezebox BOOM Bedroom: Second Boom Bathroom: Squeezebox Radio Ford Thunderbird: Duet, Mac Mini Ford Expedition: SB Touch, USB drive iPhone's Profile: http://forums.slimdevices.com/member.php?userid=13622 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
iPhone;558960 Wrote: Glad to hear you have an open mind after spending money that you probably didn't need to. The Touch has internal switchers inside it after the DC Mains (even for the 5VDC power) so adding a linear power supply should have no affect whatsoever unless ones OEM PS stopped working! The external 5VDC goes to an internal switcher to be stepped up to 10VDC so it can be regulated with an internal linear 5VDC PS. Seems kind of silly to go from AC mains to External Linear 5VDC PS then stepped up internal switching 10VDC to internal linear 5VDC. So I see four reasons to upgrade the OEM supply. The OEM supply no longer works, is causing a ground loop issue, is putting noise into other equipment, or one just has extra money laying about that one doesn't want to spend on CDs instead. I really believe it is your 3rd reason that affects some peoples systems but not others. That is why when we diff the DAC nothing shows - it's NOT the DAC output that is changing... it could be what comes out of the pre-amp/power-amp...because of what is being re-injected back into the mains (or maybe RFI). Just a theory. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue Jeans Digital,Kimber Speaker Chord Interconnect cables Kitchen Boom, Outdoors: SB Radio Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
tonyptony;558955 Wrote: John, what cap type is C1? And what about R1? I thought the LT1064 was out of production for quite some time. Is there a replacement that you know will provide the same performance in this circuit? Its the LT1084, very much still in production. I just checked Digikey and they have 384 in stock. I use half watt carbon composition for R1 and polypropylene orange drop for C1. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
JohnSwenson;559023 Wrote: I use half watt carbon composition for R1 ... John S. Not Vishay? ... -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue Jeans Digital,Kimber Speaker Chord Interconnect cables Kitchen Boom, Outdoors: SB Radio Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Has anyone here tried a Touch with a TeddyPardo PSU? Any thoughts? -- Mr_Sukebe SB Touch, Meridian 568.2, Bel Canto Evo2i, Impulse Ta'us, Coherent system, audio-technica and Zanash cables, Stillpoints Mr_Sukebe's Profile: http://forums.slimdevices.com/member.php?userid=10609 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
This is my thread I started recently on the same topic. http://www.audiocircle.com/index.php?topic=82815.0 As of now, the PE PS arrived today, I am awaiting the arrival of the new resistor to make the 6v setting 5v instead. My father in law is an EE and will do the surgery:) Trust me, I was very skeptical about adding an aftermarket PS but a buddy of mine plus many other Touch/SB owners felt this one helps a bit. For $30 or so shipped with the connector kit, its a no brainer to try at least. Good luck! Brandon -- bigbwb bigbwb's Profile: http://forums.slimdevices.com/member.php?userid=17407 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
[SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Hello, I am still waiting on delivery of my Squeezebox Touch which I plan to use with an External HDD (fingers crossed) digital out into my Dax Decade DAC. I have read with great interest soundchecks blog on upgrades along with many other posts about upgrades to the Touch and the older Squeezebox products. In many of posts about the older Squeezebox products there is a recommendation to change the switching power supply for something better. I realise there are options out there by Welbourne Labs, Boulder and others which are very much outside of my budget but are there any cheap options that I could look at? I have read that a $10 power supply was recommended for the old Squeezebox 3 as an improvement over the stock one. Is there anything similar that can be recommended for the Touch? I live in the UK and only have a very basic understanding of electronics. Any links would be fantastic and I am sure of use to many others who may be wondering about the options. Many thanks -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;557641 Wrote: Hello, I am still waiting on delivery of my Squeezebox Touch which I plan to use with an External HDD (fingers crossed) digital out into my Dax Decade DAC. I have read with great interest soundchecks blog on upgrades along with many other posts about upgrades to the Touch and the older Squeezebox products. In many of posts about the older Squeezebox products there is a recommendation to change the switching power supply for something better. I realise there are options out there by Welbourne Labs, Boulder and others which are very much outside of my budget but are there any cheap options that I could look at? I have read that a $10 power supply was recommended for the old Squeezebox 3 as an improvement over the stock one. Is there anything similar that can be recommended for the Touch? I live in the UK and only have a very basic understanding of electronics. Any links would be fantastic and I am sure of use to many others who may be wondering about the options. Many thanks I can't find the posts at the moment, but I recall some very technical users posting that there was little, if any, to be gained from using a different power supply on the TOUCH based on their own tests. p.s. I'm sure many things can be improved, but be wary of sellers and high priced improvementstake all this with a grain of salt. And by the way, if you really are concerned about things like power supplies, internal wiring paths, jitter, etc. etc., buy the TRANSPORTER. I have one and love it. But to be honest, I can't tell the difference between it and my TOUCH. -- garym garym's Profile: http://forums.slimdevices.com/member.php?userid=17325 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
The switcher that came with the SB3 was very poor. It radiated a lot of noise, AND sent a lot of noise back down into the AC main as well. There was some going into the SB3 as well, but my findings were that the radiated noise and the noise sent into the mains was usually far more of a problem. The switcher that comes with the Touch is much better, it produces a lot less contamination of the environment. But its not perfect. A properly designed linear supply can still produce a lower noise environment. Note I'm not talking about the actual signal coming out of the Touch. My measurements show very little effect on the signal out from the PS quality. The Touch has a much better power supply immunity than the SB3. Unfortunately linear supplies are not created equal. Some can still produce radiated noise and send noise back into the mains. Its definitely possible to have a linear supply that will sound worse than the switcher that comes with the Touch. Because of this I'm not very hot on getting a cheap linear supply. While they probably can improve the sound of an SB3, (ANYTHING will improve the sound over that thing that came with the SB3) there is a good chance they would actually make the Touch sound worse. Price is not necessarily a good harbinger either. There are some expensive supplies that still send a fair amount of noise back into the mains. If you are going to get an expensive one make sure you can audition it first, or get a money back guarantee. Note that I build my own supplies so I have NOT bought commercially available ones, I cannot say which ones are good or not, don't ask. If you are a hard core audiophile and like to tweak things to get the absolute best sound possible, go ahead and try linear supplies. (I have a design for a really good one if you are interested in making your own.) If not, just use the supply that came with the Touch. John S. -- JohnSwenson JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
JohnSwenson;557729 Wrote: The switcher that came with the SB3 was very poor. It radiated a lot of noise, AND sent a lot of noise back down into the AC main as well. There was some going into the SB3 as well, but my findings were that the radiated noise and the noise sent into the mains was usually far more of a problem. The switcher that comes with the Touch is much better, it produces a lot less contamination of the environment. But its not perfect. A properly designed linear supply can still produce a lower noise environment. Note I'm not talking about the actual signal coming out of the Touch. My measurements show very little effect on the signal out from the PS quality. The Touch has a much better power supply immunity than the SB3. Unfortunately linear supplies are not created equal. Some can still produce radiated noise and send noise back into the mains. Its definitely possible to have a linear supply that will sound worse than the switcher that comes with the Touch. Because of this I'm not very hot on getting a cheap linear supply. While they probably can improve the sound of an SB3, (ANYTHING will improve the sound over that thing that came with the SB3) there is a good chance they would actually make the Touch sound worse. Price is not necessarily a good harbinger either. There are some expensive supplies that still send a fair amount of noise back into the mains. If you are going to get an expensive one make sure you can audition it first, or get a money back guarantee. Note that I build my own supplies so I have NOT bought commercially available ones, I cannot say which ones are good or not, don't ask. If you are a hard core audiophile and like to tweak things to get the absolute best sound possible, go ahead and try linear supplies. (I have a design for a really good one if you are interested in making your own.) If not, just use the supply that came with the Touch. John S. Hi John I'll bite...would it be possible to post a schematic of your favoured supply? :) Thanks -- Tripmaster Tripmaster's Profile: http://forums.slimdevices.com/member.php?userid=33519 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
readers here might find this thread useful, particularly the last few posts. http://forums.slimdevices.com/showthread.php?t=79914 -- garym garym's Profile: http://forums.slimdevices.com/member.php?userid=17325 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
The SB3 and Touch PSU's are interchangeable (except when running a USB device on the Touch). So if the Touch PS is much better than the SB3 PS then just buy a Touch PS. -- toby10 toby10's Profile: http://forums.slimdevices.com/member.php?userid=12553 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
woodnut;557641 Wrote: Hello, I am still waiting on delivery of my Squeezebox Touch which I plan to use with an External HDD (fingers crossed) digital out into my Dax Decade DAC. I have read with great interest soundchecks blog on upgrades along with many other posts about upgrades to the Touch and the older Squeezebox products. In many of posts about the older Squeezebox products there is a recommendation to change the switching power supply for something better. I realise there are options out there by Welbourne Labs, Boulder and others which are very much outside of my budget but are there any cheap options that I could look at? I have read that a $10 power supply was recommended for the old Squeezebox 3 as an improvement over the stock one. Is there anything similar that can be recommended for the Touch? I live in the UK and only have a very basic understanding of electronics. Any links would be fantastic and I am sure of use to many others who may be wondering about the options. Many thanks I haven't completed all of my testing, but so far don't waste your money buying anything other then the OEM Power Supply. And from past experience, stay as far away from Welborne Labs as possible. Read the posts about them on this Forum and the Internet! The only Squeezebox unit so far that has sonic/audio gains from an upgraded power supply is the Transporter and its included as OEM when you buy it. -- iPhone *iPhone* Media Room: Transporter, VTL TL-6.5 Signature Pre-Amp, Ayre MX-R Mono's, VeraStarr 6.4SE 6-channel Amp, Vandersteen Speakers: Quatro Mains, VCC-5 Reference Center, four VSM-1 Signatures, Video: Runco RS 900 CineWide AutoScope 2.35:1 Living Room: Duet, ADCOM GTP-870HD, Cinepro 3K6SE III Gold, Vandersteen Model 3A Signature, Two 2Wq subs, VCC-2, Two VSM-1 Kitchen: Squeezebox BOOM Bedroom: Second Boom Bathroom: Squeezebox Radio Ford Thunderbird: Duet, Mac Mini Ford Expedition: SB Touch, USB drive iPhone's Profile: http://forums.slimdevices.com/member.php?userid=13622 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
toby10;557748 Wrote: The SB3 and Touch PSU's are interchangeable (except when running a USB device on the Touch). So if the Touch PS is much better than the SB3 PS then just buy a Touch PS. Better yet, if you have an SB3, just buy an entire TOUCH. ;-) p.s. I'm thinking of replacing my perfectly good SB3 with a TOUCH at one location. I've already replaced a perfectly good duet receiver with a TOUCH at another. It's a disease! -- garym garym's Profile: http://forums.slimdevices.com/member.php?userid=17325 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Thanks for all the replies. I think I shall stick with the stock PSU until a later date when I may look into building one although I may struggle as I only have basic soldering skills and a very basic knowledge of electronics. -- woodnut woodnut's Profile: http://forums.slimdevices.com/member.php?userid=38846 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
Re: [SlimDevices: Touch] Are there any cheap options for a Better Touch Power Supply?
Some interesting responses, particularly in relation to the SMPS pumping noise into the mains. The SMPS works on a range of voltages, and although I live in a 230v country, I plug the PSU into a 110v transformer for convenience (because it runs a number of other components which operate on 110v). Would this also act as an isolation transformer and prevent the SMPS putting noise back into the mains? And if so, is this as effective as a linear PSU? -- rossb rossb's Profile: http://forums.slimdevices.com/member.php?userid=38160 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 ___ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
