[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
rajacat Wrote: > Has anybody used this power supply? > http://www.welbornelabs.com/psreg.htm I have been using one with excellent results for a couple months now. I used a 50VA transfomer with the outputs paralled for double the current. It sounds alot better than the off the shelf supplies I have tried. Hope this helps. -- Mike2 Mike2's Profile: http://forums.slimdevices.com/member.php?userid=1702 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
Back to the original question, the 'LT1085 ' (http://tinyurl.com/pnvv8)is a 3A regulator. Ron seems to have spec'd the PS at 1A due the the transformer he supplies. Buy a bigger transformer, and the PS will supply more current, plenty for the SB. -- drs drs's Profile: http://forums.slimdevices.com/member.php?userid=3536 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
mauidan Wrote: > If your AC is bad, power conditioning will help the SMPS or > linear. > Thanks guys, for setting me straight. I had always been curious if power conditioning helped even after the upgrade to a linear. I have quite the opposite AC situation of Heuer- mostly knob and tube wiring (read: antennae), and lots of towers in the area that emit who-knows-what. I'm sure I could benefit from power conditioning, and it seems a more logical next step than upgrading IEC cords. -- Skunk Skunk's Profile: http://forums.slimdevices.com/member.php?userid=2685 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
Skunk Wrote: > I like to speculate it's the noise suppression of the linear that makes > the difference in my system. My house wiring is poor, and I have no > power conditioning. > > Do those with power conditioning units notice less of a difference with > the linear compared to switching? > > I have more power conditioning than you can shake a ferrite core at (dedicated fusebox, Pure Power transformer, double screened heavy duty cable to dedicated unswitched sockets and Isotek mini-sub) and I noticed a big difference in moving to a linear supply. Rest of the system is very high resolution though (Audio Research, Krell, Audio Synthesis, Wilson Benesch, Velodyne etc). -- Heuer Heuer's Profile: http://forums.slimdevices.com/member.php?userid=2543 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
Skunk Wrote: > I like to speculate it's the noise suppression of the linear that makes > the difference in my system. My house wiring is poor, and I have no > power conditioning. > > Do those with power conditioning units notice less of a difference with > the linear compared to switching? > > If the current supply were so close to being maxed out when using the > switch mode supply, wouldn't a difference be audible when the display > is off versus full brightness? I don't notice a sonic change when > scrolling through brightness settings... If your AC is bad, power conditioning will help the SMPS or linear. I'm sure the stock supply has more than enough current to run the SB. -- mauidan mauidan's Profile: http://forums.slimdevices.com/member.php?userid=1679 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
Phil Leigh Wrote: > - rather it's something to do with "noise" (or interference). > Anyway - happy listening > Cheers, > Phil I like to speculate it's the noise suppression of the linear that makes the difference in my system. My house wiring is poor, and I have no power conditioning. Do those with power conditioning units notice less of a difference with the linear compared to switching? If the current supply were so close to being maxed out when using the switch mode supply, wouldn't a difference be audible when the display is off versus full brightness? I don't notice a sonic change when scrolling through brightness settings... -- Skunk Skunk's Profile: http://forums.slimdevices.com/member.php?userid=2685 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
? the SB3 is not a power amp! surely it's not going to be swinging >2v across it's analogue outs...into a typical pre-amp input impedance (10k?) just how much instantaneous current is ever going to be delivered? -- Phil Leigh Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
Observed with what? You need a MHz (ms) fast scope to clearly see current during low frequency transients. Compare directly to the stock wallwart on the same scope. A handheld digital multimeter will not reveal the differences. -- richidoo richidoo's Profile: http://forums.slimdevices.com/member.php?userid=3097 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
tubesguy Wrote: > As is, I'd suggest that it's not suitable, since its rated at 1.5 amps > max, and the current draw of the SB would have it running at the ragged > edge. You could use the board and substitute a higher-current regulator > chip, though. - Pat Well, at full brightness the SB3 current draw is 0.93 Amp. It settles down to 0.80 Amp with the display off. This was observed on a Lab grade PSU at 5.0 V constant voltage setting. -- danial40 danial40's Profile: http://forums.slimdevices.com/member.php?userid=4680 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Welborne Labs linear power supply
As is, I'd suggest that it's not suitable, since its rated at 1.5 amps max, and the current draw of the SB would have it running at the ragged edge. You could use the board and substitute a higher-current regulator chip, though. - Pat -- tubesguy tubesguy's Profile: http://forums.slimdevices.com/member.php?userid=1703 View this thread: http://forums.slimdevices.com/showthread.php?t=23179 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
