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-   -   The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB (https://www.diyaudio.com/forums/group-buys/336479-slb-smooth-butter-active-rect-crc-cap-mx-class-power-supply-gb.html)

tubesguy 8th May 2019 05:50 PM

Quote:

Originally Posted by xrk971 (https://www.diyaudio.com/forums/group-buys/336479-slb-smooth-butter-active-rect-crc-cap-mx-class-power-supply-gb-post5783670.html#post5783670)
The big Aavids look nice though - if you really want those - get them.

Will probably be the best-looking part of my build.

xrk971 9th May 2019 10:29 AM

GB Status Update:

Quote:

baswamin - 2 boards - Paid
meanie - 2 boards - Paid
jwjarch - 2 boards - Paid
gary s - 2 boards - Paid
nautibuoy - 2 SLB boards - 2 SLB-SR boards - both Paid, ship together
antoniopf1972 - 2 boards - Paid
ravid - 2 boards - Paid, Simple PSU Paid, ship at same time
Gricko - 2 boards - Paid
poseidonsvoice - 2 boards - Paid
Bkdog - 2 boards - Paid
Jazzfan - 4 boards - Paid
yoaudio - 2 boards - Paid
*van of monks - 1 board - *Invoice sent*
Wtl - 4 boards - Paid
cerole - 2 boards - Paid
s610adam - 4 SLB - 6 SLB-SR - Paid
pbergstrom - 2 boards - *need PayPal address*
ferret - 2 boards - Paid
Roundtoit - 2 SLB boards, 2 SLB-SR boards - Paid
Tubesguy - 1 SLB board - Paid
Kokanee - 8 boards - Paid
Arthur - 10 boards - Paid
potepuh - 2 SLB boards - Paid
TboneAK - 2 SLB Boards - Paid
Sanjeevm - 2 SLB Boards - Invoice sent
Centurion53 - 2 SLB boards - Invoice sent
Vunce - 2 SLB boards, 2 SLB-SR boards - Invoice sent
Ermine22 - 4 SLB boards - Need to know if want exchange for lost previous GB

ferret 9th May 2019 07:20 PM

Hi X,
Do you have a part number for the NTC 8D-20 at Mouser? The best match I can find here is only a 3A (max) rated one. I will just have to add this to my Mouser order.
Regards, Kevin

P.S. BTW, is this essential, for the PSU?
P.P.S. Just found a 10R 6A thermistor, that should be fine not so?

xrk971 9th May 2019 09:29 PM

Yes, that is fine. Or CL-60 which is what many people use.

AKSA 11th May 2019 12:59 AM

This is proving very popular! Never thought so many people were interested in Class A in these green days of conserving energy!
Kudos to XRK, Jan and Vunce for driving this so well.......
HD

xrk971 11th May 2019 06:55 PM

Yes, we have lots of interest and I think it is because it is a very general and useful tool to have in one's Class A toolbox. I have implemented the single board dual rail SLB in a typical 25w Class A amp (the M2X) and using a 300VA 32v Antek, am able to get +/-25.4Vdc rails (a tad over 24v nominal spec but that's actually good as you get a bit more headroom. Will take some measurements soon but so far, all is quiet and no sign of hum.

GB Status Update:

Quote:

baswamin - 2 boards - Paid
meanie - 2 boards - Paid
jwjarch - 2 boards - Paid
gary s - 2 boards - Paid
nautibuoy - 2 SLB boards - 2 SLB-SR boards - both Paid, ship together
antoniopf1972 - 2 boards - Paid
ravid - 2 boards - Paid, Simple PSU Paid, ship at same time
Gricko - 2 boards - Paid
poseidonsvoice - 2 boards - Paid
Bkdog - 2 boards - Paid
Jazzfan - 4 boards - Paid
yoaudio - 2 boards - Paid
*van of monks - 1 board - *Invoice sent*
Wtl - 4 boards - Paid
cerole - 2 boards - Paid
s610adam - 4 SLB - 6 SLB-SR - Paid
pbergstrom - 2 boards - *need PayPal address*
ferret - 2 boards - Paid
Roundtoit - 2 SLB boards, 2 SLB-SR boards - Paid
Tubesguy - 1 SLB board - Paid
Kokanee - 8 boards - Paid
Arthur - 10 boards - Paid
potepuh - 2 SLB boards - Paid
TboneAK - 2 SLB Boards - Paid
Sanjeevm - 2 SLB Boards - Paid
Centurion53 - 1 SLB boards - Invoice sent
Vunce - 2 SLB boards, 2 SLB-SR boards - Paid
Ermine22 - 4 SLB boards - Need to know if want exchange for lost previous GB

Mark Johnson 11th May 2019 07:05 PM

Quote:

Originally Posted by xrk971 (https://www.diyaudio.com/forums/group-buys/336479-slb-smooth-butter-active-rect-crc-cap-mx-class-power-supply-gb-post5788037.html#post5788037)
... using a 300VA 32v Antek, am able to get +/-25.4Vdc rails ...

Is that a typo? a 2x32VAC secondary transformer would provide about +/- 42Vdc , and a 2 x 16VAC secondary transformer would provide about +/- 21Vdc. In neither case is it 25 ... ???

Maybe it was a 2 x 22Vac Antek?

xrk971 11th May 2019 09:35 PM

Sorry, typo AN-3222. The 3232 is what I use to get 35v from an SLB under load.

xrk971 12th May 2019 03:34 PM

GB Status Update.... boards have been ordered and are at silkscreen step, maybe another day and they should be finished before shipping.

Quote:

baswamin - 2 boards - Paid
meanie - 2 boards - Paid
jwjarch - 2 boards - Paid
gary s - 2 boards - Paid
nautibuoy - 2 SLB boards - 2 SLB-SR boards - both Paid, ship together
antoniopf1972 - 2 boards - Paid
ravid - 2 boards - Paid, Simple PSU Paid, ship at same time
Gricko - 2 boards - Paid
poseidonsvoice - 2 boards - Paid
Bkdog - 2 boards - Paid
Jazzfan - 4 boards - Paid
yoaudio - 2 boards - Paid
van of monks - 1 board - Paid
Wtl - 4 boards - Paid
cerole - 2 boards - Paid
s610adam - 4 SLB - 6 SLB-SR - Paid
pbergstrom - 2 boards - Paid
ferret - 2 boards - Paid
Roundtoit - 2 SLB boards, 2 SLB-SR boards - Paid
Tubesguy - 1 SLB board - Paid
Kokanee - 8 boards - Paid
Arthur - 10 boards - Paid
potepuh - 2 SLB boards - Paid
TboneAK - 2 SLB Boards - Paid
Sanjeevm - 2 SLB Boards - Paid
Centurion53 - 1 SLB board - Paid
Vunce - 2 SLB boards, 2 SLB-SR boards - Paid
*Ermine22 - 4 SLB boards - Need to know if want exchange for lost previous GB
Everyone is all paid up - thank you! Just need info from Ermine22 what he wants to do about using credit he has on previous GB.

gary s 12th May 2019 10:59 PM

Thanks for the update X.


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