Seeking schematic for Trace Elliot GP7 1983 model 1004 bass combo

[HenryL]

The title says it all... I've found many schematics that look like they probably overlap or are variations on / developments of this earlier model but never the exact one. I'm reluctant to start trying to trace it out myself as it gives me the ab dabs
This is the 4x10 combo. It does not have an effects loop. It has two 'Hi Z' inputs and pre and post fade line outs from the pre-amp. I think it was supposed to be 150W into the internal 8ohm or 300W into 4ohms with external cab.
It has a single K135/J50 output pair and according to some of my old notes the rail voltages were about +70 / -70V quiescent.
The date is from the 'Tested by' signature. The power amp board (peeking through the slots) seems to be MPB2 ISSUE2

[g1]

Sometimes the manufacturer will use the same schematic for a 2 or 4 output device amp, and we just ignore one pair of outputs for the lower power version.
I'm attaching the AH300 schematic, which has the higher voltage rails that you mentioned in the other thread (100V filter caps.).
I think the 4 output version was 300W, and the 2 output version 150W. Yours probably does 150W with ext. cab, less as combo. You won't get much more out of a single pair of those output Fets.

[HenryL]

Many thanks g1. This schematic should suffice as a guide for the power amp stage as you say. (I'm sure you're right about the wattage - 300W seems a bit optimistic in retrospect!) . I would still like to find a schematic that covers this older version of the preamp if someone has it, though I'm hoping it won't be needed for the current repair situation. I'll pick up on the other thread.