Studio Reference Amplifier

[Dragan100]

IF Zobel NET has HIGH temp, then there are HI-freq oscillations content superponed to audio content,
you must look OUT signals (before Zobel NET OUT) with oscilloscope,
look at 10KHz square wave OUT response, if are there Overshoot, Ringing, Settling time (or oscillations)
Post some response oscillograms here...

 

[Moth flutter fire]

That's how it worked. The setting is smooth and fine. I still ask, will 23mV on the emitter resistors be OK?

How do you change the bias voltage can be adjusted?

 

[Sunny22g]

 

[mira1]

How do you change the bias voltage can be adjusted?

If everything is correct, by turning the trimmer P1, you can observe the 0R33/5W emitter resistors.

 

[Sunny22g]

Hi mira. Set dmm 200 mv. See this trimpot. See the voltage across emiter resistor. Set bias like this.

 

[mira1]

Yes, that's how it should be.

 

[Sunny22g]

Hi
Send u pcb clean picture.