New tubes for my Liverpool

Express, Liverpool, Rocket, Dirty Little Monster, etc.

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Plague
Posts: 74
Joined: Sat Feb 16, 2008 3:58 pm

New tubes for my Liverpool

Post by Plague »

I'm hearing a "crackling" noise every now and then during practice.

At first I thought it was a bad cable or jack on my les paul but it is intermittent and seems to go away when I switch to my marshall. :-(

My wreck has old hammond power tubes and two out of the three pre-amp tubes are old hammonds too. (1 groove tube pre-amp tube)

Question:

If I were to put a new set of power tubes in do I have to have someone bias the amp? I did not build it myself and really do not know too much about this matter.

2nd Question:

Does this sound like it could be something else besides power tubes? If so, what sort of trouble shooting might I do.

Thanks again for the help everyone!!
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