Hi Bob,
?
If you want to try out an "ancient" headphone dynamics compressor, known to QST readers in the 60s, you can try the attached diagram.
?
The attached simulation is done with LTspice, the values are a little different because I have simulated different solutions, but the substance does not change ... "IT WORKS" !!! ...
P.S. the simulation is done by combining 3 frequencies (300Hz, 1.650Hz and 3.000Hz) to see the behavior in the normal OM reception range and check for any harmonic distortions introduced, the result is excellent, from the FFT the only harmonics present are over 5kHz , in an area where they should not give distortions.
?
