Red Knob Concert Lead Schematic

[Walt-Dogg]

I'm gonna be picking up a Red Knob Concert Lead this weekend that supposedly the brite switch, the distortion and the reverb aren't all working properly, so I need the schematic to take to my guy to get it fixed up. I have the feeling though that when I play it before I buy it the guy selling me it is just a retard, but just in case. Anyone got that schematic?

[loudthud]

I think the Concert Lead Schematic you want is here:

http://sunn.ampage.org/site/schematics/SunnConcertLeadOld.GIF

[Walt-Dogg]

I don't believe that is it, it has two sets of input jacks on it, Red Knobs only have one. Strange though because it appears to be dated for 1979 and that's near the end of production of Concert Leads (or maybe it's after, I'm not sure) but that means it should be for a Red Knob.

[loudthud]

Ok, this is the one with the strange footswitch. The distortion won't work without the footswitch.

http://sunn.ampage.org/site/schematics/SunnConcertLeadNewPreamp.GIF
http://sunn.ampage.org/site/schematics/SunnConcertLeadNewPoweramp.GIF

[Walt-Dogg]

I'm looking for the one with the switch on the front that controls the distortion.

[loudthud]

OK, that last one appears to have Boost and Distort switches on the front panel.

[Walt-Dogg]

OK, that last one appears to have Boost and Distort switches on the front panel.

You mean this?:

Ok, this is the one with the strange footswitch. The distortion won't work without the footswitch.

http://sunn.ampage.org/site/schematics/SunnConcertLeadNewPreamp.GIF
http://sunn.ampage.org/site/schematics/SunnConcertLeadNewPoweramp.GIF