krell ksa5 klone
Both Birgir and I have wanted one of these for quite a while, and they never seem to show up.
So with a little help from one of the members here we were able to reverse engineer this one.
http://gilmore.chem....rn.edu/ksa5.pdf
http://gilmore.chem....rn.edu/ksa5.jpg
still have work to do on the power supply.
All the parts are still available, but identical and compatible parts also available.
mpsw06 and mpsw56 and lsk389
I think this one is fairly cheap to do. And easy to assembl
ok, so the krell documentation is a little questionable, but when they measure the bias they
do it from emitter to emitter. so the number is twice as big as the two test points I put on the board.
specifically its 250 millivolts emitter to emitter cold, and 180 to 200mv hot.
so at the two test points provided its 125 millivolts emitter to output no load cold a,d 90 to 100 millivolts hot.
which sounds about right.