Peavey Windsor100 head power section 6550 mod...

[jim p]

What are you trying to do by changing over to 6550 over EL34/6L6 as the output tubes? You cannot make a 200 watt head out of a 100 watt head if that is what you are thinking. The output transformer and power supply could support a two tube 6550 set up instead of the four tube EL34 configuration, but not four 6550 tubes. The power supply would have to be capable of supplying twice the current, thus twice the power to support four 6550 tubes. Also the output transformer would need to be able to handle the higher current without going into saturation.

[ttenroc]

Bill you're right about my desire to make this into a 200 watt amp and I'm willing to change the transformers from deceptecons to autobots to make it happen if it will indeed work. I have alread test fitted the 6550s on the chassis and its a tight squeeze but they fit.

I have a larger PT now 600watts 60hz 120vac that I harvested from an old Peavey Stereo Chorus 400. Would that be large enough to power four 6550s?

Also it seems like this am may already be designed to saturate the OT early since I'm getting power tube distortion with the master set to around 2 o'clock and the pre at noon. The amp cleans up tremendously as I turn the master down, but then I cant keep up with the rest of the band. I don't mind some growl but I wanna control that with my preamp setting...
Yes. The Band is way LOUD

Any ideas on where I can find an OT better suited for my needs?

Would there be a benifit in running 2 6550s over 4 el34's?