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Old 8th May 2012, 12:42 PM   #31
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Location: ontario,london area
oops wrong link Click the image to open in full size.
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Old 3rd June 2012, 09:33 AM   #32
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Location: Brighton, UK
I've bought another board. Bi-amping, here we come...
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Old 5th March 2015, 06:03 PM   #33
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Join Date: Mar 2012
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Hiya
Long time no post.
Finally got that 35vDC Fully Regulated supply built for my 4ch 6n11/3886 gainclone built (pics to follow).
YES, THESE BOARDS CAN HANDLE A REGULATED 35V DC POWER SUPPLY.
And they sound gorgeous.
No-one can tell on mine if the volume is set to MAX or MIN.
I've got two of the afore mentioned 6N11/3886 boards in a full dual mono-block implementation with a derivation of the PSU circuit I also mention in an earlier post, with a slight re-design to accommodate the chassis' 80-0-80v transformers. Yeah, the regs get a bit warm... Wadaya gonna do???
LOL
Sounds bloody lovely on my new Dundee6s
cw

Last edited by copperweed; 5th March 2015 at 06:03 PM. Reason: clarity
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Old 5th March 2015, 06:14 PM   #34
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http://www.diyaudio.com/forums/attac...-psuschem1.jpg

I pulled the 4700uFs and used 2200uFs @63V instead, and also increased the zenner diode's 3K9 feed resistors to 4K7 ohms, but that's about it folks.

cw
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Old 5th March 2015, 10:28 PM   #35
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Got sum pics up here

Scrap-lifier MkII; 4ch, 50w, Fully Regulated 35-0-35 PSU. Sounds Amazing! | Alacrity Audio

cw
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Old 6th March 2015, 11:45 AM   #36
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Join Date: Mar 2012
Location: Brighton, UK
The donated chassis was a Sherwood 200W monster of a power-amp. The main boards had gone down and were cooking the transformers. It was a full dual mono-block design to start with, so I just had to replace the boards and include a supply regulator to drop the 80-0-80 float-voltage to a more manageable 35-0-35.
I tried to fit a volume-control, but the fascia stands so far off the front of the chassis that the potentiometer stem does not reach through the aluminium extrusion.
:-)
'First-World' problems...
Fascia-plate being a right-royal PITA to get it pretty, if I'm honest. I just haven't got the time or patience (or space!!!) for spray-painting. Might make a new one in our usual perforated ali.
More pics when we've got more done.
Any questions about our 35-0-35 vdc, 12-0-12 adc Power regulators?
cw
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