Expression pedal controlled line level attenuator build.

[OfficialCodini]

I’m looking to build a passive balanced line level attenuator with a TRS jack to connect any universal expression pedal, and a single knob on the unit to set a minimum volume level. I know practically nothing about circuits, but it seems simple enough that I could build this for fairly cheap if I knew how. I’m looking to connect it with some XLRs so it can sit within my rack chain, and I can shift the volume from far away on the expression pedal to anywhere from -6db to 0db or -infinity to 0db depending on where the minimum volume knob on the unit is set. Is there an easy way to accomplish this? Thanks in advance!

 

[gyraf]

not entirely passive

this clashes with "universal expression pedal" which can be quite a few things

Perhaps remote control a motor pot?

use VCA's?

"mock-up" your own by means of midi expression pedal and midi VCA?