Drew this one up some time ago and thought i’d post it up. It’s basically Mark’s layout for Keeley 4-knob style compressor with slight tweaks and more notably, an addition of mix/blend/ratio knob. As some of you already know, the basic CA3080 compressors like Ross, MXR and derivatives reverse the signal polarity and thus, the simple blend circuit additions won’t work with it. So here’s the Ross compressor with tons of usable mods on it. I’ve built a number of these already, so consider it verified.
2017/05/08 – One cap was reversed on the layout. Now fixed, but i had to redraw this completely due to lost source files. Anyway. Here’s the “V2”.
