Hi,
Nice place you have here. Someone pointed me in the direction of this forum after I mentioned a Craigslist purchase I made on Saturday. I bought this '67 or '68(?) Thunder 1 (part no. T1-12, serial number 4515) for $50. With a very grainy picture and a description that merely said "powers up", I was expecting a bit of a basketcase...and that was fine. When I saw it in person, I was shocked at how clean it was. Aside from the missing back panel, nothing looks touched and it still has the factory tubes. Apparently someone's grandfather passed away and this was in his apartment. The seller said they borrowed a guitar to test it and it made some noise, but then began to smell funny and they shut it down. The best pics I have at the moment:
I guess my first question concerns the schematic. I've been inside an amp before for minor component changes and understand the safety issues at play, but I really want to understand how it all works and part of the reason for buying was to learn. If I understand correctly, the RVT schematic is pretty close, but I have found two sites that claim to have the T1-12 for a price. Has anyone actually seen one of these? I've seen some really bad schematic scans before....but I guess it's only 5-15 bucks, right? :wink:
Can caps - I see one on the chassis and it looks like there's one at Antique Radio Supply with these specs: 40/40/40/40 UF @350 VDC That seems to match what I'm seeing on the RVT schematic. Would this be a suitable replacement?
Last question - any recommendations for a 12" speaker? I understand that some of these had 10" speakers and this one is definitely a 12". I'm looking for something that breaks up quite late, so if anyone has recommendations, I'd love to hear it.
I'm removing the chassis next weekend for a visual inventory, but will not begin work until after Christmas. I have a bit of reading to do in the meantime. Any help appreciated!
Brendan
Nice place you have here. Someone pointed me in the direction of this forum after I mentioned a Craigslist purchase I made on Saturday. I bought this '67 or '68(?) Thunder 1 (part no. T1-12, serial number 4515) for $50. With a very grainy picture and a description that merely said "powers up", I was expecting a bit of a basketcase...and that was fine. When I saw it in person, I was shocked at how clean it was. Aside from the missing back panel, nothing looks touched and it still has the factory tubes. Apparently someone's grandfather passed away and this was in his apartment. The seller said they borrowed a guitar to test it and it made some noise, but then began to smell funny and they shut it down. The best pics I have at the moment:
I guess my first question concerns the schematic. I've been inside an amp before for minor component changes and understand the safety issues at play, but I really want to understand how it all works and part of the reason for buying was to learn. If I understand correctly, the RVT schematic is pretty close, but I have found two sites that claim to have the T1-12 for a price. Has anyone actually seen one of these? I've seen some really bad schematic scans before....but I guess it's only 5-15 bucks, right? :wink:
Can caps - I see one on the chassis and it looks like there's one at Antique Radio Supply with these specs: 40/40/40/40 UF @350 VDC That seems to match what I'm seeing on the RVT schematic. Would this be a suitable replacement?
Last question - any recommendations for a 12" speaker? I understand that some of these had 10" speakers and this one is definitely a 12". I'm looking for something that breaks up quite late, so if anyone has recommendations, I'd love to hear it.
I'm removing the chassis next weekend for a visual inventory, but will not begin work until after Christmas. I have a bit of reading to do in the meantime. Any help appreciated!
Brendan