First note: I've looked through other threads but they seemed rather off-target or unclear to me (again :o).
I'm re-building an amplifier and one of its functions is switching between sources. This is consumer-grade line level (pro grade line level is hotter).
They're practically a two way switch, but two of them in once. A little like 1-Common-2.
My question is: if Pin 2 is connected to a common (SIGNAL) ground, do I connect the switch so that if it's in the 'on' state, passing audio from Common to 1 (To Output), and when 'off' from Common to 2 (Ground)?
Reading through other threads made it clear it's technically safe to do this but is it common and how you do it? I'm afraid if I make Common the common output, and lines 1 the 'input' that runs from rca to switch, that it'll cause some distortion. If I make it go to Ground when 'off' then there's no chance of interference because ground is a shorter path.
I just want to make sure, and is this right?
As a little side note: What gauge of wire would be the best for this application?
Thanks anyhow. :)