Will this router work?

[MikeH]

My friend plays guitar and lap-steel.  He uses one channel on his amp for one, and the other for... er, the other.  Anyway, he wants me to build a switcher with 2 inputs and 2 outputs, so he can step on it to switch between lap-steel and guitar.  No prob, I drew up this little figure down below.  Although, I'm a little concerned with switch noise, just because it's completely shunting one signal path while simultaneously opening another.  I afraid it will cause popping.  Any thoughts?

[Andi]

Looks fine to me. Though I'd suggest separating the grounds.

[MikeH]

You mean like, with a transformer?  I thought about that, but as long as it's going to the same amp there shouldn't be ground issues, right?

[Andi]

I just meant keeping the grounds for the two sides separate - so rather than link them all together, input 1's ground gets connected to output 1's ground, and that's what it's shorted to. Vicey-versey for input and output 2. 'Cos then if he ever changes and has an amp for each you'd not need to rewire.

[trixdropd]

You mean like, with a transformer?  I thought about that, but as long as it's going to the same amp there shouldn't be ground issues, right?

You should be fine without a transformer. The design looks good to me for 1 amp.

[biggy boy]

Hi Have you see this thread?
You could maybe get some ideas form it or adapt it. It's sort of the same.

http://www.diystompboxes.com/smfforum/index.php?topic=75528.0



Glen