I need a universal pseudo-balance control to move between stacks. I say pseudo, because I don't need a full/classical sort of balance control. Just an adjustment on one side.
Reason: I have hearing loss on the left side that varies from 3 to 10 db, depending on volume levels. I'd like to simply turn down the right side as needed. Using software plugins works in some situations, but not on everything I like to do.
Ideally it would be a passive box with RCA connectors that can be used in different stacks. Here's what I'm thinking:
So I have 3 questions:
1. Is this a viable idea in terms of not screwing up the fidelity?
2. What value should the POT be? I want about 0 to ~12db of attenuation.
3. Should I add R1 as if it were a normal balance control? In other words, if the POT is 50k, should I have a 50k resistor for the left channel to keep things even?