Re: [SlimDevices: Audiophiles] xlr pinout?
ratso;312048 Wrote: sadly most preamps including mine aren't balanced. But aren't your monoblocks balanced? -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal...SB3+Stontronics PSU - Altmann JISCO/UPCI - TACT RCS 2.2X with Good Vibrations S/W - MF X-DAC V3/X-PSU/X-10 buffer (Audiocomm full mods)- Linn 5103 - Linn Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Kimber Chord cables Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
pfarrell;312050 Wrote: ratso wrote: oops left that out of original thread. i have a ground loop hum Using an XLR to RCA cable is not going to address that at all. Balanced all the way may, but RCA is unbalenced, and can lead to ground loops. I can think of one off-the-wall way of wiring up XLR to RCA that *might* break a ground loop: XLR pin 2 - cable core 1 - RCA centre pin XLR pin 3 - cable core 2 - RCA screen XLR pin 1 - cable screen - leave *unconnected* at RCA end As I said, this is a pretty unconventional way of wiring things up, but it may do the trick. One problem I can see is that it shorts one side of the balanced output to ground, so that side is going to be driving only 100 ohms. I don't know what effect that might have. -- cliveb Transporter - ATC SCM100A cliveb's Profile: http://forums.slimdevices.com/member.php?userid=348 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
Phil Leigh;312136 Wrote: But aren't your monoblocks balanced? yes, but my preamp isn't - hence the need for rca to xlr as the ground loop is occuring between the preamp and the amps (no ground loop if preamp is taken out of mix and transporter goes directly into amps). -- ratso Martin Logan Vantages - Wyred for Sound SX-1000 monoblocks - Blue Circle BC-21 preamp - Slim Devices Transporter - APC H10 power conditioner - Cables by Me! ratso's Profile: http://forums.slimdevices.com/member.php?userid=11493 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
i know that there is a lot of conjecture as to whether or not the cable will work to break a ground loop hum and i didn't mean to open a whole can of worms here. but as i quoted earlier in this thread, jensen transformers believes it can help and they are pretty much the top experts in this subject i believe, so i do think it's worth a shot and much cheaper then buying a transformer. so does anyone know the pinout? is there such a thing as a 'standard' pinout, i believe the US uses a different pinout then the rest of the world, is this correct? -- ratso Martin Logan Vantages - Wyred for Sound SX-1000 monoblocks - Blue Circle BC-21 preamp - Slim Devices Transporter - APC H10 power conditioner - Cables by Me! ratso's Profile: http://forums.slimdevices.com/member.php?userid=11493 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
The usual convention is: Pin 1 = Shield ground Pin 2 = Positive balanced signal Pin 3 = Negative balanced signal but some manufacturers - for reasons known only to themselves - will use pin 3 hot or even pin 1 hot. Sean - any comment? -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal...SB3+Stontronics PSU - Altmann JISCO/UPCI - TACT RCS 2.2X with Good Vibrations S/W - MF X-DAC V3/X-PSU/X-10 buffer (Audiocomm full mods)- Linn 5103 - Linn Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Kimber Chord cables Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
ratso;312151 Wrote: yes, but my preamp isn't - hence the need for rca to xlr as the ground loop is occuring between the preamp and the amps (no ground loop if preamp is taken out of mix and transporter goes directly into amps). But surely, if you have balanced-input power amps, you'd want to use a balanced pre-amp? Anyway, the thing is you should not be getting a ground loop in any circumstances...unless something is wrong. I know US wiring is different to the UK, but I've wired up studios with a mix of balanced and unbalanced items (over 50 pieces of gear) and had no ground loops. Normally a ground loop occurs where there are multiple parallel paths to earth...or sometimes NO paths to earth. I think you said that TP+power amps = OK?, but TP+Pre+Power Amps = hum? Is everything plugged into a single power strip? Can you hear the hum when there is no music playing? - does it go away if you unplug the TP from the mains? -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal...SB3+Stontronics PSU - Altmann JISCO/UPCI - TACT RCS 2.2X with Good Vibrations S/W - MF X-DAC V3/X-PSU/X-10 buffer (Audiocomm full mods)- Linn 5103 - Linn Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Kimber Chord cables Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
Phil Leigh;312157 Wrote: but some manufacturers - for reasons known only to themselves - will use pin 3 hot or even pin 1 hot. Swapping pins 2 and 3 doesn't matter unless you're concerned with absolute phase, but I can't believe anyone would ever use pin 1 for anything other than the screen. Do you know of any specific counter-examples? -- cliveb Transporter - ATC SCM100A cliveb's Profile: http://forums.slimdevices.com/member.php?userid=348 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
Hi Ratso is all the amps and transporter connected to a power strip with ground, are you using power cables with ground ? or not. If you living in uk i suppose it is so ? but elsewere things can be different. I had all kind of strange problems with an power amp that required grounded power outlet, but I was supplied with an power cable wo ground ? No cable TV/antenna cable connected to anywhere in the system, it's the usual culprit. -- Mnyb Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
cliveb;312181 Wrote: Swapping pins 2 and 3 doesn't matter unless you're concerned with absolute phase, but I can't believe anyone would ever use pin 1 for anything other than the screen. Do you know of any specific counter-examples? Yes - older Linn gear used to do this... -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal...SB3+Stontronics PSU - Altmann JISCO/UPCI - TACT RCS 2.2X with Good Vibrations S/W - MF X-DAC V3/X-PSU/X-10 buffer (Audiocomm full mods)- Linn 5103 - Linn Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Kimber Chord cables Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
16 replies and no one has answered the OP's question. :) I called tech support about this recently and was told that the Transporter conforms to the US standard of pin 2 as hot/positive. -- dagordon dagordon's Profile: http://forums.slimdevices.com/member.php?userid=6804 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
According to a response from Sean when I first got my transporter: http://forums.slimdevices.com/newreply.php?do=newreplynoquote=1p=312138 I interpret that to mean that to mean you leave pin 3 unconnected (floating). That said, I recently switched from my home-rolled xlr to unbal cables to using a Jensen ISO-MAX PC-2XR and have liked the results: transporter xlr to PC-2XR to ATI AT1502 power amp to Magnepan MG3.5s. -- gharris999 gharris999's Profile: http://forums.slimdevices.com/member.php?userid=115 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
ratso;312154 Wrote: i know that there is a lot of conjecture as to whether or not the cable will work to break a ground loop hum and i didn't mean to open a whole can of worms here. but as i quoted earlier in this thread, jensen transformers believes it can help and they are pretty much the top experts in this subject i believe, so i do think it's worth a shot and much cheaper then buying a transformer. so does anyone know the pinout? In the apnote, a transformer is required in both balanced to unbalanced circuits to get good common mode rejection. This was also my experience when I set up PA equipment for bands. I built several homebrew audio transformer boxes (Jensen JE-11 transformers) which were quite effective in solving grounding problems. The root of grounding problems is often incorrect grounding topology inside the equipment, but adding an external transformer is an effective band-aid. I also carried a couple medical power isolation transformers for situations where it was more desirable to put the transformer in the mains circuits rather than the audio path, but the effect was exactly the same. -- Timothy Stockman Timothy Stockman's Profile: http://forums.slimdevices.com/member.php?userid=8867 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
dagordon;312266 Wrote: 16 replies and no one has answered the OP's question. :) I called tech support about this recently and was told that the Transporter conforms to the US standard of pin 2 as hot/positive. haha thanx dag, just thinking the same thing. yes i have everything in the same power strip and have disconnected my cable (the usual culprit). interestingly i have ALWAYS gotten a hum of some degree with any preamp, including passives, actives, passive/active, etc. as far as getting a balanced pre that is a last resort, but most of the pre's i crave/lust are not balanced. BAT and bel canto is my last resort. -- ratso Martin Logan Vantages - Wyred for Sound SX-1000 monoblocks - Blue Circle BC-21 preamp - Slim Devices Transporter - APC H10 power conditioner - Cables by Me! ratso's Profile: http://forums.slimdevices.com/member.php?userid=11493 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
Timothy Stockman;312332 Wrote: In the apnote, a transformer is required in both balanced to unbalanced circuits to get good common mode rejection. This was also my experience when I set up PA equipment for bands. I built several homebrew audio transformer boxes (Jensen JE-11 transformers) which were quite effective in solving grounding problems. The root of grounding problems is often incorrect grounding topology inside the equipment, but adding an external transformer is an effective band-aid. I also carried a couple medical power isolation transformers for situations where it was more desirable to put the transformer in the mains circuits rather than the audio path, but the effect was exactly the same. thanx also for that timothy. i will let everyone know if using just single ended xlr fixes a hum for me. i have read that it is effective for some users. i also know that everyone is not fully onboard the full balanced boat, like mick from supratek who seems to think single ended is the way to go for curing hum and preserving SQ (there i go jumping into that controversy). -- ratso Martin Logan Vantages - Wyred for Sound SX-1000 monoblocks - Blue Circle BC-21 preamp - Slim Devices Transporter - APC H10 power conditioner - Cables by Me! ratso's Profile: http://forums.slimdevices.com/member.php?userid=11493 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] xlr pinout?
you guys have never let me down before so i will ask you. i am having a set of blue jeans cables xlr to rca cables made to go from my transporter to my preamp. blue jeans was asking what pinout i need? thanx, ratso -- ratso Martin Logan Vantages - Wyred for Sound SX-1000 monoblocks - Blue Circle BC-21 preamp - Slim Devices Transporter - APC H10 power conditioner - Cables by Me! ratso's Profile: http://forums.slimdevices.com/member.php?userid=11493 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
Why not just use the RCA outputs that already exist? -- Eric Seaberg Eric Seaberg - San Diego - [EMAIL PROTECTED] Eric Seaberg's Profile: http://forums.slimdevices.com/member.php?userid=7896 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
oops left that out of original thread. i have a ground loop hum -- ratso Martin Logan Vantages - Wyred for Sound SX-1000 monoblocks - Blue Circle BC-21 preamp - Slim Devices Transporter - APC H10 power conditioner - Cables by Me! ratso's Profile: http://forums.slimdevices.com/member.php?userid=11493 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
The XLR output on the transporter is the common industry standard. Unless there is something funky about the balanced input on your pre-amp you shouldn't need anything special. Edit: Oh, wait, the BC-21 you list in your sig doesn't have balanced. You won't get anything fixed by using the XLR outputs on the TP. -- SuperQ SuperQ's Profile: http://forums.slimdevices.com/member.php?userid=2139 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
sadly most preamps including mine aren't balanced. -- ratso Martin Logan Vantages - Wyred for Sound SX-1000 monoblocks - Blue Circle BC-21 preamp - Slim Devices Transporter - APC H10 power conditioner - Cables by Me! ratso's Profile: http://forums.slimdevices.com/member.php?userid=11493 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
ratso wrote: you guys have never let me down before so i will ask you. i am having a set of blue jeans cables xlr to rca cables made to go from my transporter to my preamp. blue jeans was asking what pinout i need? I just checked the usual documentation and don't see the answer to the only important question for XLR, is pin 2 hot? So we'll have to have Sean or someone more knowledgeable than me answer your specific question. But why do a XLR to RCA conversion when there are RCA connectors right there to use? You lose the benefit of being balanced when you change to RCA. -- Pat Farrell http://www.pfarrell.com/ ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
ratso wrote: oops left that out of original thread. i have a ground loop hum Using an XLR to RCA cable is not going to address that at all. Balanced all the way may, but RCA is unbalenced, and can lead to ground loops. -- Pat Farrell http://www.pfarrell.com/ ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] xlr pinout?
lots of people have cured ground loops with single ended xlr (and many haven't either!). according to jensen transformers it may have to do with the construction of the cable and they say a properly constructed cable can have a pretty dramatic effect on hum (see fig. 2.1) http://www.jensentransformers.com/an/an003.pdf anyways it's a cheap fix if it works which is why i want to try it. as for single ended vs. fully balanced i'm not even going to touch that controversy. -- ratso Martin Logan Vantages - Wyred for Sound SX-1000 monoblocks - Blue Circle BC-21 preamp - Slim Devices Transporter - APC H10 power conditioner - Cables by Me! ratso's Profile: http://forums.slimdevices.com/member.php?userid=11493 View this thread: http://forums.slimdevices.com/showthread.php?t=48882 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
