Chippsta Posted June 29, 2014 Share Posted June 29, 2014 I just bought a used Spider Valve 112. It's the original model and the former owner did some mods to keep it from overheating. He put a heat sink on the processor and mounted a fan on the back. He said it did not over heat like all the others he'd heard about and that he'd left it running 8 hours to test that. It sounded great in his studio and in my home, but i took it to an out door gig this weekend and it was just awful. It sounded fizzy, thin and weak even when i had it cranked ! After the second set of struggling, i let it cool down and plugged in my 15 watt Fender Blues Junior. The Fender sounded louder with fatter bass and just all around bigger tone. I understand that a 40 watt amp is not going to be 2 1/2 times louder, but i sure expected more ! I haven't tested the tubes, so i think that's my next step. Any ideas ? Quote Link to comment Share on other sites More sharing options...
napynap Posted July 9, 2014 Share Posted July 9, 2014 In my experience, failing preamp tubes will gradually cause less volume and tone over a few shows. Not sure if this is also the case for failing power amp tubes. For this to happen so quickly after testing inside would seem to be caused by something else. Quote Link to comment Share on other sites More sharing options...
tscoolberth Posted August 15, 2014 Share Posted August 15, 2014 Get new tubes. all the way around. They're not expensive. Quote Link to comment Share on other sites More sharing options...
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