Millet portable tube amp - ringing noise cured- now a true portable
Feb 9, 2009 at 6:43 AM Thread Starter Post #1 of 19

Golden Ears

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I read somewhere that the tubes in the Millett would ring when you moved.

I bought one.. it was true.. if you moved a lot with it - it would ring.
I opened it up and saw the tubes were not really glued well onto the double stick tape. They sorta hung in space a bit...and could jiggle if you bumped it... like swinging a bit on the circuit board.

So....

I thought.. what makes speakers couple well to speaker stands???? and stops vibration.....???

Blue Tack..

So I got some "fun taK" (made by DAP) likely the same thing...

I took that little sheet of waxed paper that it comes with and made a ball of FUN TAK

Then I folded the wax paper over on it.. And crammed that on top of the little tubes. It can't stick because of the wax paper but the wax paper made it slippery enough to slide back into its casing without moving.. and still maintaining gentle but constant pressure on the tube to keep it from vibrating.

Voila... ZERO ringing...NONE NADA ZILCH.. the perfect tube amp...


----Appplause.....-


Very happy now.
 
Feb 9, 2009 at 11:24 PM Post #3 of 19

Golden Ears

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I think it is a wonderful amplifier...One of the audio devices I feel truly makes a difference.

Yes like all tubes there are euphonic distortions... but tubes get so many things correct and add so much more realism than they detract.

I like them so much I am buying two so I always have a spare.

So nice not to hear any ringing at all. The microphonics are gone.
 
Feb 10, 2009 at 1:40 AM Post #4 of 19

triode12

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Thanks for the tweak.

I love my MP too.

I wonder if using felt might work as well. i.e. sticking a piece of felt to the top of the case where the tubes are situated.
 
Feb 10, 2009 at 6:23 AM Post #6 of 19

vorlon1

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Good point, Miguel. Maybe we can try that or something similar with my amp. i wonder is someone should write or call Todd about this, maybe they can build something like that into future production.
 
Feb 10, 2009 at 8:05 AM Post #7 of 19

Golden Ears

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According to TTVJ the tubes don't get even slightly warm...after all... they were hearing aid tubes..and you wouldn't want to burn someone's ear.

I am sure felt would work too- but I thought that this putty even wrapped in wax paper would custom mold around the tube and help to secure it better.
 
Feb 10, 2009 at 12:31 PM Post #8 of 19

Edwood

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My TTVJ Millet portable's tubes do not get hot at all. Barely warm. I'll have to try the blue tack mod as well. I don't use it on the move (far too big), but the ringing noise when touching it, and plugging and unpluging gets annoying.

-Ed
 
Feb 10, 2009 at 12:43 PM Post #9 of 19

triode12

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The material specifications of Blu-Tack can be found here:

MUSICDIRECT - BLU TACK

It states that Blu-Tack only softens slightly above 100 deg C, so using it might be alright.

A fellow head-fier suggested using Plumber's Telfon tape as a dampening device which may be a cleaner tweak.
 
Feb 10, 2009 at 8:48 PM Post #10 of 19

Todd

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HI All,

Blue Tak and fun tak and poster putty all will work and are safe to use in the amp. The tubes do not get hot and there should be no long term problems using the putty. I have tried it and it works pretty well. As a matter of fact we will install it on all future amps sold.

The TTVJ Millett is in limited supply. We have less than 100 left and once they are gone there will be no more. The tubes are very hard to find and we have exhausted our sources. I can get 20 more tubes but that would only mean 9 or 10 more amps.

So, if you want one now is a great time to get in on the last batch of them ever to be made.
 
TTVJAudio.com Todd Stay updated on TTVJAudio.com at their sponsor profile on Head-Fi.
 
http://www.ttvjaudio.com/ todd@ttvjaudio.com
Feb 10, 2009 at 11:42 PM Post #12 of 19

triode12

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Other materials that might be employed are silicone and sorbothane. Both have high temp stability.

One could create their own silicone bumpons from a tube of plumbing/roofing silicone.

Or cut bumpons from sheets of sorbothane.

Sorbothane

The problem with Blutack is that it has mineral oil in it's composition which leaches out over time leaving an oil stain - which may or may not pose a problem in the long run.
 
Feb 12, 2009 at 1:19 AM Post #13 of 19

vorlon1

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Anyone have a picture of what this mod looks like. I'd like to do it, but I can't quite picture where to apply the BluTak or silicone. Thanks.
 
Feb 28, 2009 at 9:10 AM Post #14 of 19

Golden Ears

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Quote:

Originally Posted by triode12 /img/forum/go_quote.gif
Other materials that might be employed are silicone and sorbothane. Both have high temp stability.

One could create their own silicone bumpons from a tube of plumbing/roofing silicone.

Or cut bumpons from sheets of sorbothane.

Sorbothane

The problem with Blutack is that it has mineral oil in it's composition which leaches out over time leaving an oil stain - which may or may not pose a problem in the long run.



The oil thing is why I left it wrapped in the wax paper.

I suppose if you wanted a better seal you could always hot glue the tubes down- or use a clamp and a tiny bit of shoe goo or silicone.

sorbothane is pretty inert.

The best likely would be d30...


http://www.d3o.com/

but the fun tak works, is cheap and easy to remold or remove if needed.
 
Feb 28, 2009 at 9:15 AM Post #15 of 19

Golden Ears

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Quote:

Originally Posted by vorlon1 /img/forum/go_quote.gif
Anyone have a picture of what this mod looks like. I'd like to do it, but I can't quite picture where to apply the BluTak or silicone. Thanks.


You make a blob of bluetak wrap the wax paper around it and then snug that piece it between both the tubes and the outer casing... the wax paper is slippery enough so it lets the circuit board glide back in and it won't shift on the tubes since you press lightly to make an impression so it stays snug to the tubes while sliding on the flat outer casing.

Todd save a Millet for me..I need another.
 

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