Peavey Windsor100 head power section 6550 mod...

[jim p]

I was just posting the specifications of the tubes in the Dynaco amp so you could see the similarity and differences between them and a 6550. I don’t see any reason you could not go with using the 6550 as the power tubes for the amp. Also the more common and available the tube the better as far as in the future to maintain the amp. As far as ultra linear versus pentode the link to the web page on ultra linear should give you an idea of the differences. It is not that hard to rewire the amp one way or the other , just need to have a transformer with the screen taps for ultra linear. As before the stock supply may have a problem with the greater current requirement so you may need to replace the power transformer and add more filter capacitance.

[ttenroc]

Sorry for not posting a reply for so long. Here is how I ended up solving my problem.
First I changed R-5 in my head from a 1 to a 2.2k resistor(Bill did this in a windsor mod thread, but changed R5 back to stock resistance in his mod to retain gain levels). It gave me cleans for days in the preamp.
After looking for a while at OT's I decided that a whole nother Peavey windsor can be bought for the same price as a new OT, so I found another one on craigslist and traded my old TS-9 pedal even for it so no cash lost there. I then stacked the two heads together and ran the effects loop line out of the modded windsor into the return new one. This allows me to use the new amps power section as a "slave". When I change any setting on the top amp it comes through the slave amp sounding exactly the same. I also rewired my bass cab so that each 15" speaker has its own input jack. I can now power each speaker independantly and give it the the full power of each amp which equals tons of head room. I can still get distortion, but ONLY when I dial it in.
Fixing this problem gave me enough cinfidence to tackle the broken Traynor amp that I ranted about in the earlier post. Turns out that all I needed to do was open it up and cut the burned traces and hard wire the 3 broken conections that were arcing out. Now the Traynor works too. Thus reuniting me with my beloved fire breathing Traynor and leaving me with 2 great backup amps.
-
Bill, thanks again for your advice. You are a very knowladgeable and helpful individual.