Krell KSA 50 PCB

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DC blocking

Algar_emi said:
Bratislav: What do you mean by dc bloking caps? I never saw them in amp schematics. Please explain in more details?

Thanks....


See explanation

http://www.diyaudio.com/forums/showthread.php?s=&threadid=2080&highlight=

(there's schematic on page 2)

or

http://www.diyaudio.com/forums/showthread.php?s=&threadid=39895&perpage=10&highlight=&pagenumber=1

or

http://www.diyaudio.com/forums/showthread.php?s=&threadid=41476&highlight=

(to see Bryston approach)

Do some more searching on DC blocking. Mark Levinson and Bryston use it extensively, and many aftermarket (some obscenely expensive!) units do exactly the same. You may not need it initially, but one day your neighbour buys a lamp dimmer or whatever that will cause DC offset and you'll be sorry that you didn't leave enough room in the chasis. I suppose you can always go external, I just prefer it all in one box.
BTW, my toroids are nothing special, but not cheap either (UK made - RS components), and I had to make DC blocker circuit.

Bratislav