okee i have an marshall 9001 preamp.

and resently i noticed that when i play when the tubes arent warm yet, the volume sometimes goes down and then back up after a while, bassicaly the volume goes up/down/up/down/up but when i played for like a hour or so, when the tubes are warm its just working fine. i dont think the guy i bought it from never changed the tubes so can i be that the old tubes give this anoying problem or is it sumtin else??? help

hails

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okee doesn nowone give a fuck or doesnt anyone know??

lolz anyway its the tubes if anyone should care

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Well if you're sure it's the tubes and the volume drops, I'd think you better get new ones. They'll probably start to get worn out. Take your amp to a store and explain the problem.

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Fuck sake dude! It takes an hour before it warms up right? I could go into a detailed electronic guide of what might cause this, but start with some new tubes first and see what happens.

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the volumes going to go all fucked up anyways if the tube hasnt had time to warm up. It happens in all amps , it happened on my 8100 and so i had to wait bout 5/10 minutes for it to warm up and then it was fine.

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shouldnt take more than 30 seconds, a minute at most, for your tubes to warm up...

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i know its the tubes, its also, i played for 4 hours in a studio and on the way home my flightcase got trown around the car so that fucked it up also, it works fine now but the tube are probaly 5 years old so

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