I'm trying to locate a good 100W Concert Lead to purchase and I have a few questions about the amp, never having played through one before. I've noticed that 90% of the time, the head is without a footswitch when it's purchased from someone other than the original owner, and I've been trying to figure out all the connections on the back panel for the footswitch. Right now I've located an older 2-channel model with the 4 RCA jacks in the back for the footswitch connections. I've searched this forum and what I've found out is:
"Distort" Channel
-"L" jack is distortion on/off. Shorted to ground is on and open is off
-"R" jack is boost on/off. Shorted to ground is off and open is on. Is this the same "boost" as the "treble boost" that's switched on/off on the front panel, or is it an internal feature that isn't externally switchable other than by the footswitch?
"Reverb" Channel
-One of the two jacks turns the reverb on and off. Does anyone know which one controls it? Does shorted to ground turn it on or off? From the schematic it looks like that shorting the reverb to ground will turn it off, meaning that it's always on without the footswitch. Also, does the reverb only work on the second channel, or will it work with the "distort" channel also?
The last question about the Concert Lead that I have is: what is the ideal speaker impedance for the amp? I'm planning on building a 2x12 cab once I locate a Concert Lead head, and I would like to use a pair of 75W, 8 ohm speakers, but I don't know if they should be wired in series for 16 ohms or in parallel for 4 ohms.
Thanks for any help!
Phillip
