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aht 14th November 2004 08:40 AM

Have you ever built this balanced amplifier
2 Attachment(s)
75 watts RMS : 8 OHM

I built it about 1 years ago. It's my buchelor project in concept "Balanced amplifier without IC" you can down load pcb & schematic & simulation files at

or mail to me at



djk 15th November 2004 03:44 AM

While you have played games at DC and got a match, the inverting AC input impedance is still determined by the 562 ohm feedback resistor.

aht 15th November 2004 07:55 AM

My method
2 Attachment(s)
Input (+) and (-) I used difference value of coupling capacitor because after I listen to it .It so nice dinamic and clearly more than same value of coupling capacitor and 562 OHM you can change it for another transistor .

Transistor diff matched I borrow it from McIntoch and AMC for set DC output 0V without DC servo IC and driver to output I borrow from KRELL. It's very good idea ?

I have a circuit for simulate by circircuitmaker2000

Please email to me

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