"Jim Thompson"

I'm afraid it's true. Discrete power transistors vary much more than
tubes of a given type and manufacture run. That's why construction or
repair of high power solid state amps requires either factory-matched
sets or the use of a curve tracer to sort through piles of them.

Only because the design sucked in the first place (*).


** Show how little YOU know about SS amps.


I have yet to see a single design that demonstrated the proper way to
do a stable A-B bias.



** There are a couple of ways that work very well.

Sanken make BJTs with bias diodes on the chips.

http://pdf.alldatasheet.com/datashee...EN/SAP15N.html

Another good way is to use a common emitter output stage.


I know how but I ain't talking ;-)



** Weeeell - any posturing bull**** artist can say that !!




......... Phil