I can now switch channels on the dual rectifier using the setup I mentioned and I can get sound from my gmajor2 if I add two additional cables from my fx loop to the g major and back to my return on my effects loops.
This is the correct way to make your audio connections. The MIDI cables only carry MIDI control info.
However... Now when I switch channels on the dual rec I hear a popping sound. The GCX is changing loops accordingly but the pop is
Obnoxious which makes me think maybe I should just use a Mesa footswitch and forget about switching amp channels w the GCX and the GCP, that pop cannot be normal or good for the Mesa...?
Did the amp pop when using the Mesa footswitch? I've been playing Rectos for almost 12 years now, and they are notorious for popping a few times, and it is worse at lower volumes.
What I do with my Roadster Dual Recto is cycle through all the channels while still in standby, ending on your Orange Channel before coming out of standby (via a Voodoo Labs Control Switcher, virtually the same as using a GCX). This eliminated all pops from the amp at gig volumes.
Also, for all things Mesa Boogie be sure to visit the "Boogie Board" at http://www.forum.grailtone.com
. There is a lot of great info there, even on this subject.
Hope this helps.