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Old 3rd August 2002, 06:12 PM   #1
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Default Tube Dampers

For anybody who wants to get the most out of his tubes.
http://www.diyaudio.com/forums/showt...8367#post48367
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Old 3rd August 2002, 06:30 PM   #2
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Are those things for real? You said you abandoned the project they were for, but have you used them before? They just look so strange, yet cool.
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Old 3rd August 2002, 06:47 PM   #3
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That's the project. I intended to use good parts: MIT RTX caps, Elna Cerafine, Jensen copper foil caps, Holco, Caddock, Allen Bradley resistors and of course the dampers. The dampers were available from Sonic Frontiers, so I think they were for real. SF was sellin them at discount for $65. I never have an opportunity to try them thou. Maybe someone on the forum did?
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Old 3rd August 2002, 07:04 PM   #4
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Here's the original ad from Parts Connection's BreadBoard.
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Old 3rd August 2002, 10:38 PM   #5
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Default Tube Coolers

Bill Perkin's tube coolers act as dampers as well, cost a whole lot less than these top hats, keep the tube cooler (ie for longer life), and are available at the new Parts Connexion. A pr can be seen on my 5-Buck Amp.

Click the image to open in full size.

Bill also makes isolated tube sockets that minimize microphonics which with the tube coolers make an excellent combo.

A pdf paper on the sockets [360k] and one on the tube coolers [230k].

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Old 3rd August 2002, 10:48 PM   #6
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Default Re: Tube Coolers

Oops... didn't realize you were trying to sell some top hats Peter... that last post won't help you out any on that -- what i said is still valid thou.

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Old 3rd August 2002, 11:16 PM   #7
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That's OK Dave. I am sure that if you combine Top Hat Dampers with tube coolers you will achieve even better results on a road to audio nirvana.
And if you had a 100-Buck Amp you might think twice about obtaining them.
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Old 3rd August 2002, 11:39 PM   #8
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Quote:
Originally posted by Peter Daniel
I am sure that if you combine Top Hat Dampers with tube coolers you will achieve even better results on a road to audio nirvana.
Not a bad idea... wanna swap for some mumetal

Quote:
And if you had a 100-Buck Amp you might think twice about obtaining them.
Parts are collecting... i have a set of large [like Audio Note size] East German EL84 OPTs, some fresh 6N1Ps, a PS out of a Baldwin organ that should be bigger enuff than it needs to be (was used to power 35 'AU7s, an equal number of 'AX7s, a pr of 6L6s + a few other tubes), and some cryo-treated EL84s. Now i just need to get the summer-around-the-house-chores done and free up some time...

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Old 4th August 2002, 10:48 AM   #9
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Default Cryo treated EL84's?

I've never heard of that before. What is it meant to do?

GP.
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Old 4th August 2002, 04:05 PM   #10
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Default Re: Cryo treated EL84's?

Quote:
Originally posted by Circlotron
I've never heard of that before. What is it meant to do?
The tubes are immersed in liquid nitrogen for 12-24 hrs. One of those things that some put in the snake oil classification, but it does make improvements in tubes (or weeds out flakey ones), caps, cables, switched attenuators.

This thread is pushing for its 3rd Perkins Paper so here is the URL to a whack of them -- Cryovac is the one of interest here.

some of Bill's Papers

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