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Loud Popping When Preamp Tubes are Touched
Hello,
On my integrated tube amp (Jolida), I noticed that unless the preamp tubes (12AX/T7) are physically moved, just slightly, I get loud (full output?) popping/rushing. If I just nudge the preamp tube (seems to just be one) backward a little bit, it stops, and all sounds good. I'm assuming that after running for a bit, and shutting down, the cooling of the tube causes it to move in the socket. So (usually) the next time I power-on the amp, I get that Popping. Nudge the tube, all good.
Any idea what this could be? I have never cleaned the sockets. I have tried other 12A*7's, and the result is the same, so the problem follows the amp.
Thanks!
-Brian
On my integrated tube amp (Jolida), I noticed that unless the preamp tubes (12AX/T7) are physically moved, just slightly, I get loud (full output?) popping/rushing. If I just nudge the preamp tube (seems to just be one) backward a little bit, it stops, and all sounds good. I'm assuming that after running for a bit, and shutting down, the cooling of the tube causes it to move in the socket. So (usually) the next time I power-on the amp, I get that Popping. Nudge the tube, all good.
Any idea what this could be? I have never cleaned the sockets. I have tried other 12A*7's, and the result is the same, so the problem follows the amp.
Thanks!
-Brian