ScreaminSaint
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- Joined
- Feb 24, 2005
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A friend of mine who bought my old DR is having some tube trouble. I put Mullard EL34's in it a few weeks before he bought it. The voltage on them as around 33 mV. He was saying that the amp was cutting out a bit at his last gig and he had a severe loss of volume today.
I found out that his volume problem was due to the fx send being close to off. I checked the bias on each tube with a Weber bias rite. Looking at the back of the amp, from right to left, i had them as D,C,B,A. A and B were running around 33mv and C and D were running almost 60mv. we swapped tubes around and got the same results.
Any ideas?
I found out that his volume problem was due to the fx send being close to off. I checked the bias on each tube with a Weber bias rite. Looking at the back of the amp, from right to left, i had them as D,C,B,A. A and B were running around 33mv and C and D were running almost 60mv. we swapped tubes around and got the same results.
Any ideas?
