Sorry no offense meant. I was trying to see if anyone wanted to help me troubleshoot my amp either
1. out of kindness
2. as practise
I have checked what I can but I used vishay dale CMF resistors which are brown and have no color bands. That was not really a smart move now that I think about it.
The opamp is used to remove DC offset right? Since my DC offset is 0.5mV can I assume that it is working fine?
I just downloaded trueRTA and I'm going to use the oscilloscope to check the signal. ALthough its not as good as a real oscilloscope I'm hoping its better than nothing.
This is what I got in TrueRTA when playing a 1K hz sine wave, though my sound card isn't calibrated so I cant measure voltage properly.
I was careful to heat each component for less than a second, so I'm hoping nothing is damaged.
Yeah the image I uploaded is the schematic found on the AMB website, with the voltages I measured (in green) above the correct voltages.
What I meant was that I removed the DC offset of 110mV I had previously, not that 0.5mV is bad.
I checked it once, but I will go through it more carefully again.
R2, R7 and R11 are correct. When I measure R16 in circuit it is 900K ohms.
If I measure the resistors in circuit it wont be accurate will it?
Thanks for your help