I’ve had this idea kicking around in my head about using two 6-band EQs (which I have) in series in a 1590XX.
36,63,110,190,330,580,1000,1700,3000,5200,9000,16000
Adjusting the filters of the gyrators seems straightforward using the AMZ calculator.
But the 3.2k band is not a gyrator, it looks...