Could you walk me through that? I'm thinking that the inverting amp has a gain of 60 dB, as the ratio of the two resistors (R7 and R6) is 1000. Attenuate 80% and you're at 200. The LM386 is in its default configuration, for a factor of 20. That would be 4000, wouldn't it? (And still too high.)
Now, if the mic contributes another 2000 ohms, then I think that takes us down from a factor of 1000 on the op-amp to 500 (from 60 dB to about 54 dB), and that gets us a system gain of 2,000 when attenuated 80%, doesn't it?
