Re: Love Squeeze blend pot. Inverting or non-inverting?

Posted by induction on
URL: http://guitar-fx-layouts.238.s1.nabble.com/Love-Squeeze-blend-pot-Inverting-or-non-inverting-tp49406p49409.html

Short answer: non-inverting.

Longer answer:
Both op-amps are set up as non-inverting amplifiers. They have the signal fed to the non-inverting input and have the gain set with feedback voltage via the inverting input.

The second op-amp is not actually in the signal chain. It's the compression sidechain. The first op-amp provides the output to the output cap/volume pot, and also feeds the compression sidechain. When the input signal is large, the second op-amp feeds a voltage to Q1 that has the effect of reducing the gain of the first stage, thereby creating compression.

The circuit is an advancement of the Orange Squeezer topology. Compare the schematic to the OS schematic and read RG Keen's explanation for more info.