when i play my peavey 5150 the volume seems to increase and then back upp again, but only sometimes! Is it the tubes? What shall i do? What tubes should i replace the ones i got with?
I own a 5150 2 , and you just have to let it sit for a few seconds and let the Tubes warm up. If your sound increases/decreases after you have been playing through the amp for like 10 minutes or more, then you might have a problem. If so just take it into your local music store.