Bottlehead Forum
General Category => General Discussion => Topic started by: adamct on August 20, 2013, 02:23:22 PM
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I have a tube cooler / damper that is basically just a long, thick solid copper tube to slip over signal tubes (e.g., 12AU7, 12BH7 or E80CC). On the inside of the tube damper there are little plastic
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I'm trying to understand why you would want to do this? None of the tubes listed get very hot and you wouldn't need to assist in removing heat from them in a Bottlehead design which is open to air. What is your goal? To dampen the vibration to reduce a microphonic tube or remove heat??
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Mostly dampen vibration. Beyond which...I like the way it looks! ::)
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Copper tape will damp vibration somewhat, mostly at very high frequencies IIRC. It's not great, but it is visible on a scope. If you solder a drain wire to the tape and attach it to the chassis it will also work as somewhat of a shield for EMI.
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How about, get some plumbers Teflon tape and wind a couple of rings on the tube till the dampener fits. Cheep and easy. Plus I have some success, using this stuff directly as a dampener, some success...John
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Excellent idea! The manufacturer of the tube damper actually produces a high temperature version of these that uses some sort of Teflon bumper. Thanks for the suggestion!