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Hiraga 20W output stage bias problems




I began to rebuild two homemade Hiraga Class A homemade amplifiers. They are using the schematic below. There's only .035 volts across the .47 ohm collector resistors.

I tried to change the value of the 12K resistors but it didn't help a lot.

Naturally, there's a lot of distorsion and the amplifier doesn't have power.

What could be the problem ?

Thanks


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Topic - Hiraga 20W output stage bias problems - legarem 16:24:43 12/30/10 (1)

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