Question about Peavey Valveking Vk100 Guitar Head

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My Peavey vk100 head is running through a Carvin Legacy 2x12 cab. On the clean channel there is an inconsistent popping sound. It will happen loudly for a few seconds, and then not at all for a while, and then happen again. This sound doesn't happen when I switch to the distorted channel. Could I be mismatching the impedence, or using a bad cable? Does my amp need new tubes?

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You may simply be overdriving the clean channel and causing it to "flat top" . See if it occurs when you back the gain down a bit. New tubes PROBABLY will not help and be a waste of money. You may be unconciously playing harder during the popping episodes. You cannot hear level variations smaller than about 3 Db BUT the electronics will sense much smaller variations. You could gently tap the tubes with a lead pencil to listen for any pops... NOTE: tubes can be slightly microphonic so some sound from tapping is normal.


Yes, a cable can be noisy and not show itself when using intentio0nal distoprtion... try another to verify it is not the problem.

Posted on Jan 02, 2011

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