This amplifier has been simulated extensively, although i haven't built it nonetheless. i'm saving circuit this one for a time after I will spend smart time building and making sure the wiring goes to be optimal. i'm attending to use this amp in a bi-amp scenario with passive filters on the input. this may result in 2 amplifiers that amplify the highs and 2 amplifying the lows (for stereo) and therefore I can do an effective power of 120W into each speaker.
To set the on top of amplifier up, set R1 to max and R12 to 0. once doing this successfully, power on the amplifier. Set R1 in order that the measured output offset is between thirty and 100mV. Once set, modify R12 slowly to attain a quiescent current of around 120mA. Keep checking the quiescent current as the amp heats up because it would possibly modification owing to voltage drop changes in the output devices caused by heat. The heatsinks ought to be 0.6K/W or less for two amplifiers.
