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Hi all. I have a Thunder T-1 twin amp that is missing its speakers. Any idea what impedence the original speakers were? Secondary impedence of the output transformer? Thanks for the help!

Hi all. I have a nice T-1 with a 2x10 speaker arrangement that has been missing speakers for a long time. Getting around to fixing her up, but don't remember the OT secondary impedence. Should I be running two 16 ohm speakers in parallel for an 8 ohm load, two 8 ohm speakers for a. 4 ohm load...

Hey all. Sorry to bring out old laundry, but I have the opportunity to pick up a '90s era Guild G-500 acoustic amp and I'm now trying to find any updated info. I do know that it's a 50 watt twin 10" amp with reverb and chorus, I believe made by Randall. Anyone have/play one before? It's made in...

Hi all. I'm thinking of building a single ended amp along the lines of the Emery Sound Superbaby. Something that I can experiment with using different output tubes. The Superbaby uses a "self-adjusting cathode bias" that allows you to swap out a 6V6, 6L6, EL34, KT66, KT88, and other similar...

Hi all. I picked up a Gibson Crestline Skylark off the e-auction site a month ago. No speaker or back panel, but all of the tubes intact. I threw in a 10" alnico Oxford, and it's a real hummer. I pulled out the chassis to do a cap-job, and the circuit doesn't look like the schematic I have for a...

Hey all. I'm putting together a Gibson GA-5 clone using the push-pull 6AQ5 output section. Any recomendations for an output transformer? What primary impedence should I be looking for? Thanks alot folks. -PD

Hi everyone. Would anyone happen to have the schematic for a "pinkface" Guild Maverick? I'm looking for the one with the cathode biased 7591's and the 7247 PI. Thanks a bunch. Happy New Year everybody!!

Hi all. My Thunder 1 is originally a 2x10 "Baby Bass" combo, but has no speakers. Does anyone know if the 2x10 had a different O.T. secondary impedence than the 1x12? More specifically, are the speakers two 4 ohms parallel into an 8 ohm load, or two 8 ohm speakers serial into a 4 ohm load...

Hi all. I'm new on this forum. I've looked thru the amp topic boards and can't seem to find a schematic for a Thunder 1, only the T1 RVT. I just acquired a T1, and it looks like a complete refurb. It would sure help to have the actual T1 schematic. Any help would be greatly appreciated. Thanks...