freestompboxes.org

I had bought this amplifier in the 60 watt version in 1983 defective, the transformer was burned out. I have repaired it in the 1990 years and sold it. Now i have redrawn the very blurred original schematics on a request.
Because the transformer was defective I could not measure the transformer voltages, as far as I remember I replaced it with a Fender compatible one.
I took the shown voltages from the original circuit diagram.

very M.E.S.A like

Great, now also the transformer voltages are known.

bajaman wrote: ↑18 Aug 2020, 09:05 very M.E.S.A like

More just straight up Fender style amp with reverb with some extra options just for switching the tone of the amp a bit. Even the master and phase inverter is very 70s Fender. No extra gain stage like the Boogie MK1 amps....looks like a Boogie tho...

Hi Manfred, I've had one of these amplifiers from new, bought in late 1979, at one of the many Denmark Street (London) music shops - I don't remember which , as too long ago . It had some 'mods' added by the shop amp tech before delivery. Unfortunately, I did not get a list of what was actually changed, but I have been searching high and low for many years for the schematics, just in case! I always said I was going to sit down over a couple of evenings and write out the schems, but never did. So a HUGE THANKYOU for posting these. So much appreciated.