Krell KSP-7B

[plamentinos]

Hello everyone. I have a Krell KSP-7B preamplifier, but we lost the external power supply when we moved. I'm willing to do it. Does anyone have a schematic of the power supply and any idea what the supply voltages and currents are?
Thanks in advance.
This foto from internet.

 

[JKB77]

I’m hoping for the same. Please let me know if you have any luck. I have one that’s been built but would like to improve it

 

[UserAbuser]

Krell themselves are very accommodating. I'd ask them.

 

[JKB77]

The PSU for a Krell KSP-7B is +21 and -21 from all sources online.
Would anybody here be able to confirm that this board mated with an appropriate transformer and D9 cable work in theory?https://www.ebay.com/itm/225669036205

 

[Andersonix]

It looks promising but doesn't state the output current. That pcb says "copyright 2015 Kevin Gilmore" so maybe you can find out more?

 

[Andersonix]

LDOVR.com makes very nice regulated stuff, so maybe contact him for +/-21V?

https://www.ldovr.com/category-s/121.htm

 

[JKB77]

It looks promising but doesn't state the output current. That pcb says "copyright 2015 Kevin Gilmore" so maybe you can find out more?

Aaah thank you! I guess that’s my next obvious adventure. To find what current is appropriate

 

[JKB77]

@Terry Demol I think you made the current PSU that is with my Krell.
Any chance you could PM me the specs? Sorry I’m new here and can’t PM direct

 

[artm]

Any update on this thread? I may be in the same boat soon if I can't find my original power supply.