Wierd Noise Coming From Amp

LunaticFringe

New member
A wierd noise has been coming from my amp for a few days now. It sounds kind of like static, but more like crackling. I tried to rule out possible causes. I bypassed my pedalboard and plugged straight into the amp. Same noise. I tried 3 different cables. No difference. I tried it with my computer off, and then my flourescent light off. It still made the noise. I plugged it into the other outlet in my room and still no difference. I have noticed two things about the noise. Turning the volume up on the amp doesn't make the noise louder, I actually have to turn it down to hear it because it stays at the same level. And when I turn all the volume controls down to zero, even my guitar's, it still makes the noise at the same volume. I just got a new set of tubes from Eurotubes, so I would be suprised if that was the issue. Anybody want to venture a guess at what this could be?
 
Re: Wierd Noise Coming From Amp

I had the same issue and it was coming from my V1 JJ preamp tube...I tossed in a space EHX 12AX7 and the crackling and popping went away...
 
Re: Wierd Noise Coming From Amp

I just got a new set of tubes from Eurotubes, so I would be suprised if that was the issue. Anybody want to venture a guess at what this could be?

Bad preamp tube. It's not unusual to get a bad brand new tube. I work part time for a boutique amp maker and we see them all the time. That's the first thing I'd check.
 
Re: Wierd Noise Coming From Amp

I should have rephrased that. I got a new set recently enough that it would be wierd. It didn't start right after I changed them. I'll check the tubes anyway though.
 
Re: Wierd Noise Coming From Amp

tubes most likely.. i had some bad tubes right out of the box before...

it could also be capsitors... how old is the amp...?
 
Re: Wierd Noise Coming From Amp

Not even a year old.


hmm strange.... but some friends of mine that were touring with sopport from Hiwatt lost 3 new heads in one week from a small resistor... they have since fixed the issue but in a week they blew 3 brand new heads...
 
Re: Wierd Noise Coming From Amp

ps.... sounds like a warranty should cover you if it's less then a year
 
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