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Power Tube Dampeners?

Major9

Silver Supporting Member
Messages
70
I have a combo that develops power tube rattle on the single Power and rectifier tubes (not the preamps). It only happens at a couple frequencies (mostly "E"). I'm sure it's the glass on the tubes as I can stop it by lightly touching the glass with a pencil when it it happening. I can touch either one to stop it...almost like they are talking to each other. Does anyone have a good source for Power tube "dampeners". I don't want a metal shield.....Something that will slip over the tube. I have seen a plastic fishnet stlye on a Mesa Mk4? Any ideas? Thanks in advance.:)
 

hipfan

Member
Messages
2,301
Haven't tried those, but they sure look cool! I'm an easy mark for that kind of stuff (from the amount of Auralex stuff in my rehearsal space, I should buy stock in the company), so I'll probably order something from Herbie's. :D
 

hipfan

Member
Messages
2,301
Interesting stuff. Thanks for the link, muddy.

I ordered a couple of Herbie's dampers yesterday for the EL34's in my Demeter. I'll report when they arrive.
 

hipfan

Member
Messages
2,301
OK, I put the Herbie's dampers on the Siemens EL34's I'm running in the Demeter. It's like a whole new amp!!!



Just kidding. They're cool little units, and the tubes seem to be running A-OK, with no microphonics or mechanical noise coming through the amp. Of course, there was none before either. If anything, I view these little fellas as kind of preventative maintenance gadgetry. They kind of make me smile when I notice them sitting there on the tubes. That's worth something, isn't it? :)

I think a long term test is the only way to really figure out if they're worth anything for a guitar amp. I've had bad luck with EL34's going psycho on me in the past with mechanical noise, so hopefully these will help avoid that in the future.
 




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