After jump R9 & take off C5 I measured again the voltages:
Left channel
Leds to gnd 7.30V
Across R17 0.259V
R10/Q2 to gnd 10.30V
R1/Q3 to gnd 11.32V
R7 to gnd 10.51V
Drain Q5 to gnd 19.85V
Right channel
Leds to gnd 7.50V
Across R17 0.285V
R10/Q2 to gnd 11.24V
R1/Q3 to gnd 11.80V
R7 to gnd 11.30V
Drain Q5 to gnd 18.80V
It's necessary to adjust R10/Q2 to gnd at 10.0V with R6 trimmer & do the measurements again?
Don't trim to match at R7, trim to match at R10/Q2 to GND. 10-11V. Current is better for your IDSS through R7 now.
R7 11V
Drain Q5 to gnd 24.6V
Last edited:
R7 11V
Drain Q5 to gnd 24.6V
Did you put the 1K21 R7 yet?
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