proid
100+ Head-Fier
- Joined
- Mar 21, 2011
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Which op amp are you using?
Did you take the advice (given everywhere, actually) to run the amp with a cheap but known good op amp during the initial setup?
I don't have any spare cheap opamp so i just use the 1641 and it's no so expansive so it's fine for me. Today, i power on the amp by 2 9v battery and get dc at output about 6V and i measure the voltage at output of opamp, it's 8.6v (the same with power supply), is that ok?
Edit: I have just disconnect the voltage gain stage and just power output stage and still get 6.8V dc at output