Mr. Awesome. asked:
okayy so i just bought a tube amp( mesa roadking) and all of the channels sound amazing except for one clean channel(channel two). For some reason when i switch to it. Wel it goes quieter than the other channel and it makes a sort of shuffling noise similiar to someone moving a microphone. Im wondering if anyone might know the cause? Mesa is closed today and local amp techs are being *****. Please help!
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Sphere: Related Contentokayy so i just bought a tube amp( mesa roadking) and all of the channels sound amazing except for one clean channel(channel two). For some reason when i switch to it. Wel it goes quieter than the other channel and it makes a sort of shuffling noise similiar to someone moving a microphone. Im wondering if anyone might know the cause? Mesa is closed today and local amp techs are being *****. Please help!
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That’s a lot of amp you bought!
Most likely, there’s a preamp tube that going or gone. At least, that’s the easy problem to solve.
It’s also possible that an interstage coupling capacitor is bad. When those go, they will cause problems like you describe.
It could also be an issue with a solder joint, although I very rarely see that with Mesa gear.
You should have a tube layout chart (if not, download the manual from Mesa). I would swap preamp tubes with the other clean channel. If the problem moves, it’s the tube. If it doesn’t, it’s something else in the channel.
Good luck.
Greetings from Austin, Tx
Ken