Not familiar with this amp, but if it has a bipolar output stage, look for emitter resistors. These will all be common to the amp output, with one each to each power transistor. With the power off, measure the resistance with a good DVM with a low ohm scale. Most of these are well under 1 ohm in value. Then with the amp powered up and warmed up, measure the voltage drop across these resistors and compute the current through them from your measured values. Then add up all the emitter resistors (of one polarity) and multiply, and that will give you the total bias current in the output stage. You can then monitor the voltage drop across one of these resistors while you adjust bias to compute the total current.
Mark Levinson ML3 bias voltage?
I really need three things. but the first is the most important.
1. Does anyone know what the bias voltage across the output emitter resistors is for a Mark Levinson ML 3 amp?
2 does anyone have an accurate schematic for this amp? Mark Levinson to this day will not release the schematic for such an old amp. and reverse engineering is really a pain.
Any help on this is greatly appreciated.
enjoy
1. Does anyone know what the bias voltage across the output emitter resistors is for a Mark Levinson ML 3 amp?
2 does anyone have an accurate schematic for this amp? Mark Levinson to this day will not release the schematic for such an old amp. and reverse engineering is really a pain.
Any help on this is greatly appreciated.
enjoy