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PPA v2 construction discussion - Page 73

post #1081 of 1082

In case it isn't clear from the above, you should be measuring 1V across R10 if it's 1k to achieve 1mA through the resistor, not 1mV.

post #1082 of 1082
Thanks for clearing that up. I was running the amp at around 250mv that's why it didn't sound right. Every thing else checks out in the troubleshooting guide. Also I had the power supply set at 24v not 29v.

Supply 23.88v
S1+ to S1- 23.08v
DC offset input to output gnd .02v
V+ to V- = 21.8v on L R and gnd
V+ to input gnd = 10.8v
V- to input gnd = 10.9v
Amp is drawing 100 - 125ma depending on opamp 8610, 637 627
Dc offset R output to out gnd .2 mv Left .9mv.
Edited by fc911c - 8/27/15 at 9:47pm
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