Jumper channels

[LP Freak]

I'm wanting to jumper the channels on the inside of my 50W Plexi so I don't need a patch cable. Can some explain how or better yet have a diagram?

[LP Freak]

Nobody knows how to do this?

[eddie25]

Surprised no one has answered this yet. What I would do is just use a short piece of wire and jump the tips of the two sides together. I would do it on the bottom two jacks (while you are working on it upside-down) so that they both go through the 33K option, but you can do it how you like. Make sure it's the tip that is active when the jack is in, and keep the other 'switched' one to ground.

Or you could just run one jack with two 33K resistors from the tip, one going to pin 2, and one pin 7 of V1.

I've never actually done either of these myself so I can't attest to the sound, but those are what I would try first.

[Roe]

another option is connecting at the the tube pins. search old posts

[flemingmras]

+1. Just disconnect one set of jacks and jumper pins 2 and 7 together on V1.

[Puerco]

If you internally jumper pin 2 and 7 of V1 those channels are directly connected without going through the input resistors for the second channel. It sounds different because you don't loose any signal by going through the input resistors twice, so you'll get a little more gain.
I've run my amp for a while this way with a switch in between and could switch it while playing without noise, it really "fattens up" the sound a little more than just a patch cable and I only removed this because I needed that hole in the back to install a larmar ppimv.