#1
Hey everybody

So I am a proud owner of 1973 Fender Bassman 10 Tube combo amp- its great, full of creamy, chimey, Fender delicousness, however; I was using it to do some recording and had to muffle the speakers with a house of blankets, many of them were heavy and included some rubber rugs, but needless to say it got hot... hot as hell... Them tubes were glowing like crazy after a good 8 hours of recording. Lately I have noticed it heating up to pretty hot temperatures while playing, the chasis next to the on/off switch won't get hot enough to burn you, but definitely gets close to it and can be uncomfortable to switch off after a few hours of jammin.

Does anyone know if I could have screwed something up by letting it run to hot (during recording) that may cause it to run too hot now (just while jammin)? More importantly, how can I tell if a tube amp is running too hot? Like I said, I love the amp to death, and I know if it is running too hot it can create calcification on the circuitry and kill the amp. What should I do short of taking it to an amp tech? Is there anything? Possibly a rule of thumb to tell when it is running too hot?
Last edited by MediaJones at Jun 13, 2010,
#2
Tubes get pretty toasty when they're running. It's normal for any tube amp to be hot after being on for that long, especially when they're covered in blankets. If anything I wouldn't cover the amp like that again to allow the tubes to get some ventilation.
Gear:
Ibanez RG570 circa 1993
Ibanez S2020XAV
Carvin DC127
EVH 5153 50w
Orange PPC112
AxeFX II