I guess 11 ohm will do but just to make sure not to fry something, where did you mean I put the resistor? Q1,2 source to what?
lift source from circ , solder one end of resistor to source , other end of resistor were source was .
that means that you're inserting resistor in source lead of mosfet , so you can observe current through mosfet , measuring voltage across resistor
that means that you're inserting resistor in source lead of mosfet , so you can observe current through mosfet , measuring voltage across resistor
Last time I tried it on speakers it played in unbalanced. Now on power up DC peaks up to 20V... I don't want to fry my speakers ... 😱
put dummy load at output and observe ;
and - most importantly - ask someone else to re-check everything
seems we are turning in circles , from some reason
and - most importantly - ask someone else to re-check everything
seems we are turning in circles , from some reason
I have observed amps with the dummy load and came to conclusion that DC peak is almost not existing... to cut it short - I have tried it and it plays music.
After all I have concluded this:
Preamp somehow masked the problem with the sources and all 3 different DACs I have tried had some problem on balanced! Few days ago when I changed configuration of VU meter buffer in Pre amp the source problem became obvious because it no longer masked it...
AYAII DAC shows AC with balanced on aleph out when plugged in but not fired up. When I power it up its OK... 🙄 In very funny order of events I have never found the problem before...
After all I have concluded this:
Preamp somehow masked the problem with the sources and all 3 different DACs I have tried had some problem on balanced! Few days ago when I changed configuration of VU meter buffer in Pre amp the source problem became obvious because it no longer masked it...
AYAII DAC shows AC with balanced on aleph out when plugged in but not fired up. When I power it up its OK... 🙄 In very funny order of events I have never found the problem before...
I told you that you have problem with gnd lead somewhere .......
been there , done that
and - I'm still dumb
been there , done that
and - I'm still dumb
For some reason one of my A30 would do the same thing when plugged into a friends Meridian DAC. I assumed it was some kind of Impedance mismatch that caused an oscillation.
Bill
Bill
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