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Revalving Engl Head
My Engl fireball has got really really noisy over the past couple of months so I think its time for a revalve. The only problem is my tech has left town and I don't know anyone else I trust or who hasn't messed friends amps up revalve them.
So my question is can I revalve the amp myself easily?
I have changed the tubes in pres and compressors in the past but I have never revalve an amp. It's the biasing that concerns me if I change out the power amp tubes will my head need to be rebiased?
I think while I'm changing the power amp tubes I'm going to also swap out some of the pre tubes to try and get a bit more mid out of the head and a little less bottom end. Its my understanding that I can just change the pre amp tubes without rebiasing is this right?
Its the 60w Engl Fireball E625 head I have,
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