Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
I've used a couple of switch mode psu unitsin my system in the past and I've never really felt comfortable with the results ...they seem to leave an edge to the music ..difficult to describe. I've gone back to linear types and found these more forgiving [?] or more musical the latest unit is a simple voltage regulator and bridge with 15000uf of pana fc smoothing caps and a toroidal transformer rated at 75va 9-0-9, I've also used a schafner iec mains filter and fused switch . This is a small step up from the square frame tranny version with 10,000uf. Once the psu board was placed in it case there were more small improvements, as I isolated the board from the case on a layer of sorbthane like material. The case is built round a granite sheet using 45mm x 15mm wooden sheet and an 18mm mdf lid..the whole weighs in at 5kg and acts as a vibration sink. this will be my last psu for a bit as I've exhausted my current ideas -- zanash Acoustician and builder of interesting cables zanash's Profile: http://forums.slimdevices.com/member.php?userid=12157 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Veering recklessly back on topic, I recommend gdg read the Application Note AN1695/D from ONSemi, "Handling EMI in Switch Mode Power Supply Design." Last time I looked I could not find it on the ONSemi site (http://onsemi.com), so you may need Google to help you find it. -- queequeg queequeg's Profile: http://forums.slimdevices.com/member.php?userid=11010 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Sorry, my degree is in Physics so, unlike a technician who's played with a scope, I tend to get sucked in by any hocus pokus masquerading as science (not). Line conditioners aren't a cure all and no one has claimed they were. If YOU knew anything about digital you'd know it can generate high levels of noise that propogates back through the AC lines. If you can filter some of this and isolate the components you get an improvement not a cure all. Making idiotic exaggerated statements to ridicule a position you don't agree with doesn't make your point. -- gdg gdg's Profile: http://forums.slimdevices.com/member.php?userid=1122 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
The highly touted Musical Fidelity A324 Dac utilized a massive fully regulated choke power supply and it sounded like crap. Piano notes had harmonic distortions that were virtually unlistenable to my ears and I dumped the unit pronto. -- gdg gdg's Profile: http://forums.slimdevices.com/member.php?userid=1122 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Tyler obviously DOES understand the technology. Do you? Extremely few people, even few engineers, understand the charging cycle of a capacitor input power supply (a large current spike full of harmonics) and the problems it causes. He clearly is aware of this. Choke input power supplies largely cure this but are physically impractical. Audiophile designs partially cure the problem through improved characteristics of high speed rectifiers, but the current spike is still there, and radiates badly, just like the author said. Vague statements about line conditioners as a cure-all for mysterious noise are always suspicious. Discussions about the merits of expensive AC power cords are complete nonsense. And yes, I am an audiophile with real gear; including good tube electronics and a real vinyl repro system. I don't doubt that attention to detail creates good sound; I doubt bad physics when I hear it. - from an oldie, moldy Electrical Engineer. -- NatureDude NatureDude's Profile: http://forums.slimdevices.com/member.php?userid=12104 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
'Channel Islands Audio' (http://www.audiocircle.com/circles/index.php?topic=44661.0) will soon offer a power supply for the SB. -- vdorta Silent computer, Windows Vista Ultimate, dBpowerAMP Reference/FLAC, Slimserver 6.5.4, wireless SB2 (Bolder digital & analog mods, Sonicap Platinum bypass caps, Bolder Deluxe Power Supply), WAV convert, Stello M200 monos, ACI Sapphire XLs + REL Storm III | Chaintech AV-710, XMPlay, JMT PPA headamp, AKG K601, Etymotics ER-4S vdorta's Profile: http://forums.slimdevices.com/member.php?userid=1446 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
tyler_durden;226227 Wrote: > A digital watch radiates noise too, but when have you heard anyone > complaining about it? A linear supply radiates noise- look at the > waveform at the rectifiers and explain how THAT won't radiate. It > isn't a matter of does it radiate- everything does, it is a matter of > how much it radiates. It is also a matter of how susceptible other > devices are to that radiation. > > You're going to get a what, $500 line conditioner to theoretically > counteract the noise made by a $5 power supply? In this context the > guys who spend $300 for a linear supply for the SBs look downright > sensible! > > TD Of course those with the typical garbage sound system always ridicule audiophile notions they know nothing about and have no experience with. What kind of an idiot spends $500 for a line conditioner to isolate one component?...You get it to isolate and filter 5 or 6 components (many of which are generating digital hash back onto to the AC mains). If you want to come off as sensible you might want to educate yourself about a technology before poo pooing it (and maybe even trying it yourself). -- gdg gdg's Profile: http://forums.slimdevices.com/member.php?userid=1122 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Lucky this thread went off topic early...history tells us this topic is hazardous to your online health -- peejay Music is what feelings sound like - Unknown peejay's Profile: http://forums.slimdevices.com/member.php?userid=7046 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
And in once owned a scooter.. a triumph tigress 250. handled a dream but the engine was weak. i agree about parking the little buggers and having a gill. -- mudlark SB3>CyrusDACX>PreXvs>260A>KEFiQ7 cable Avondale server Kubuntu Feisty Fawn, linkstation for storage. DIY SB3 3A linear power supply. mudlark's Profile: http://forums.slimdevices.com/member.php?userid=7151 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
mudlark wrote: > Pat Farrell;226228 Wrote: >> Italian styling is cool. >> British electrics, perhaps from Lucas, god of darkness? > > I once owned a Ducati 350 so don't talk to me about British electrics > being crap. The bike would do a good 90 plus but 30 was pushing it in the > dark. Yes, but do Italians drink warm beer? The answer to why the Brits drink warm beer is "Lucas refrigerators". I own a scooter shop, scootrichmond.com, I know all about Vespa and Lambretta electrics. The proper thing to do at night is to park your Italian bike and go drink wine in the piazza. Pat -- Pat http://www.pfarrell.com/music/slimserver/slimsoftware.html ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Pat Farrell;226228 Wrote: > mudlark wrote: > > It's got Italian styling , british components and guaranteed to last > > for ever. > > Italian styling is cool. > British electrics, perhaps from Lucas, god of darkness? I once owned a Ducati 350 so don't talk to me about British electrics being crap. The bike would do a good 90 plus but 30 was pushing it in the dark. -- mudlark SB3>CyrusDACX>PreXvs>260A>KEFiQ7 cable Avondale server Kubuntu Feisty Fawn, linkstation for storage. DIY SB3 3A linear power supply. mudlark's Profile: http://forums.slimdevices.com/member.php?userid=7151 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
mudlark wrote: > It's got Italian styling , british components and guaranteed to last > for ever. Italian styling is cool. British electrics, perhaps from Lucas, god of darkness? ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
gdg;226223 Wrote: > Dudes, > an engineer/audiophile friend just informed me that the SB3 power > supply isn't a problem at the digital output but it does radiate AC > noise. I figure a decent line conditioner with dedicated digital > filters should do the job. A digital watch radiates noise too, but when have you heard anyone complaining about it? A linear supply radiates noise- look at the waveform at the rectifiers and explain how THAT won't radiate. It isn't a matter of does it radiate- everything does, it is a matter of how much it radiates. It is also a matter of how susceptible other devices are to that radiation. You're going to get a what, $500 line conditioner to theoretically counteract the noise made by a $5 power supply? In this context the guys who spend $300 for a linear supply for the SBs look downright sensible! TD -- tyler_durden tyler_durden's Profile: http://forums.slimdevices.com/member.php?userid=2701 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Oh come on, everyone knows that my power supply is the best. Why I built it i don't know, but it does make me feel better. It's got Italian styling , british components and guaranteed to last for ever. Cool. -- mudlark SB3>CyrusDACX>PreXvs>260A>KEFiQ7 cable Avondale server Kubuntu Feisty Fawn, linkstation for storage. DIY SB3 3A linear power supply. mudlark's Profile: http://forums.slimdevices.com/member.php?userid=7151 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Dudes, an engineer/audiophile friend just informed me that the SB3 power supply isn't a problem at the digital output but it does radiate AC noise. I figure a decent line conditioner with dedicated digital filters should do the job. -- gdg gdg's Profile: http://forums.slimdevices.com/member.php?userid=1122 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
bad.wolf;226209 Wrote: > Hi live in the UK and bought this one from Russ Andrews. > > http://www.russandrews.com/lookup/1/region/UK/currency/GBP/customer_id/PAA0999099307228YFPFJNCLQVWBGKOH/product-SqueezePak-power-supply-for-Squeezebox-1810.htm > > Found a definite improvement although without doubt a tad expensive, > but once youve bought it youve bought it! > Bad wolf You're replacing a switch mode supply with a switch mode supply? Now I've heard everything! TD -- tyler_durden tyler_durden's Profile: http://forums.slimdevices.com/member.php?userid=2701 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Hi live in the UK and bought this one from Russ Andrews. http://www.russandrews.com/lookup/1/region/UK/currency/GBP/customer_id/PAA0999099307228YFPFJNCLQVWBGKOH/product-SqueezePak-power-supply-for-Squeezebox-1810.htm Found a definite improvement although without doubt a tad expensive, but once youve bought it youve bought it! Bad wolf -- bad.wolf bad.wolf's Profile: http://forums.slimdevices.com/member.php?userid=12172 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
jeffmeh;226151 Wrote: > Maybe. Some people have found it to make a difference, others have not. > The most plausible hypothesis is that the RFI generated by the stock > switching supply presents no problem for the SB3, but it can affect > other components more sensitive to this RFI. > > I bought an inexpensive, linear, regulated PSU and could not hear any > difference. YMMV. Everyone who does this assumes that the switching supply radiates more RFI than the linear supply that they are replacing it with. This is not necessarily the case. Without numbers you are just guessing. You may as well reverse the resistors in the SB and hope that the thing will sound better when you're through. But which ones? All of them? A few critical ones? One guess is as good as another. Maybe you need a linear supply AND reversed resistors... TD -- tyler_durden tyler_durden's Profile: http://forums.slimdevices.com/member.php?userid=2701 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
zanash;226121 Wrote: > YesI run to an external dac and the bigger psu adds finess and > delicateness [resolution is improved?] probabley the wrong term. > > If your UK based I can give you the detail of who to build one ...pm me Hi, I am in the UK and would be interested. Best Ivan -- IvanSlade IvanSlade's Profile: http://forums.slimdevices.com/member.php?userid=12094 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
gdg;226118 Wrote: > I understand that a number of reviewers have criticized the SB3 power > supply and suggest an upgrade to improve the sound quality from the > analog outputs. > I intend to stick with the digital output to feed a Benchmark Dac1. > Would a power supply upgrade be worthwhile in this case? Maybe. Some people have found it to make a difference, others have not. The most plausible hypothesis is that the RFI generated by the stock switching supply presents no problem for the SB3, but it can affect other components more sensitive to this RFI. I bought an inexpensive, linear, regulated PSU and could not hear any difference. YMMV. -- jeffmeh jeffmeh's Profile: http://forums.slimdevices.com/member.php?userid=3986 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
Thanx dude, Unfortunately I live in Canada. -- gdg gdg's Profile: http://forums.slimdevices.com/member.php?userid=1122 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
YesI run to an external dac and the bigger psu adds finess and delicateness [resolution is improved?] probabley the wrong term. If your UK based I can give you the detail of who to build one ...pm me -- zanash Acoustician and builder of interesting cables zanash's Profile: http://forums.slimdevices.com/member.php?userid=12157 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Power Supply Upgrade for SB3?
I understand that a number of reviewers have criticized the SB3 power supply and suggest an upgrade to improve the sound quality from the analog outputs. I intend to stick with the digital output to feed a Benchmark Dac1. Would a power supply upgrade be worthwhile in this case? -- gdg gdg's Profile: http://forums.slimdevices.com/member.php?userid=1122 View this thread: http://forums.slimdevices.com/showthread.php?t=38271 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
