The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Dynaco VTA tube amp kits, all Tubes4hifi.com products and all Dynakitparts.com products


    Damping Materials – What, When and Why?

    Share

    aguaazul

    Posts : 45
    Join date : 2012-07-08
    Location : Livermore, CA

    Damping Materials – What, When and Why?

    Post by aguaazul on Sun Jul 19, 2015 11:56 pm

    I’ve used a small patch of sorbothane as an insulator between say PIO caps and a circuit board.
    What material is used inside of line or phono preamps and DAC’s as damping sheets / materials?  
    The Parts Express Lightweight Vinyl Sound Damping Sheet 27" x 40", can you bolt through that?
    Sorbothane sheets, you can’t bolt through. Would it be good to use some under a transformer in a preamp or DAC, etc. if it was cut properly?

    I see in the VTA preamps that there are damping sheets used. What’s going in there?

    Blue

    sKiZo

    Posts : 1310
    Join date : 2013-04-01
    Location : Michigan USA

    Re: Damping Materials – What, When and Why?

    Post by sKiZo on Mon Jul 20, 2015 1:17 am

    Might be better off just adding a piece of DynaMat to the main plates on the equipment if you feel it's a problem?

    I went with a custom case on my ST120 and added beveled washers under the heavy iron. I figure there's still some vibration transmitted to the mounting screws, but the washers should damp that. Not sure if it made any difference as I never tried it without ...

    Then again, I'd say if you can tap around on a live chassis and not induce any ringing or microphonics, leave well enough alone.

    aguaazul

    Posts : 45
    Join date : 2012-07-08
    Location : Livermore, CA

    Re: Damping Materials – What, When and Why?

    Post by aguaazul on Mon Jul 20, 2015 4:44 pm

    I'm putting together a TUBE DAC DIY KIT. Want to prep the chassis to keep my system as quiet as it remarkably is. Looking at some premium new builds around, looks like the Vinyl Sound Damping material is being used. I want to make sure I'm using the right stuff.

    tubes4hifi
    Admin

    Posts : 1292
    Join date : 2008-11-30

    Re: Damping Materials – What, When and Why?

    Post by tubes4hifi on Tue Jul 21, 2015 12:42 pm

    I use the Parts Express dampening material on most of my preamps.
    The DynaMat stuff might be better, haven't tried it, but it costs a lot more.
    I don't see any reason why you wouldn't be able to bolt something thru sorbothane.

    sKiZo

    Posts : 1310
    Join date : 2013-04-01
    Location : Michigan USA

    Re: Damping Materials – What, When and Why?

    Post by sKiZo on Tue Jul 21, 2015 1:29 pm

    Biggest problem with sorbothane is it bleeds and gets gooey. Adding heat isn't gonna help that any. I steer away from that stuff as it can cause more problems than it solves.

    I like Dynamat because it holds up to heat much better than anything else I've tried. I do know it kills resonance ... if it can handle the back wall of a pickup cab, I figure it can handle anything!


    Tube Nube

    Posts : 643
    Join date : 2008-12-06
    Age : 53
    Location : Calgary, AB

    Re: Damping Materials – What, When and Why?

    Post by Tube Nube on Thu Jul 30, 2015 8:12 pm

    Great for damping the screaming complaints of the squabbling kids in the back. But, oops, what was ok in the 70's is child neglect or abuse now.

    Bob Latino
    Admin

    Posts : 2413
    Join date : 2008-11-26
    Location : Massachusetts

    Re: Damping Materials – What, When and Why?

    Post by Bob Latino on Thu Jul 30, 2015 8:59 pm

    I have one room treated with some panels from The Foam Factory online .. It works well and you have different foam patterns you can use. Link below ...

    The Foam Factory

    Bob

    audiobill

    Posts : 270
    Join date : 2014-03-13
    Location : Philadelphia

    Re: Damping Materials – What, When and Why?

    Post by audiobill on Fri Jul 31, 2015 7:08 am

    aquaazul - what kit are you building?

    aguaazul

    Posts : 45
    Join date : 2012-07-08
    Location : Livermore, CA

    Re: Damping Materials – What, When and Why?

    Post by aguaazul on Fri Jul 31, 2015 11:49 am

    24bit/192KHz  DAC w/ Tube Buffer. I picked up a Vinyl Sound Damping Sheet and lined the bottom of chassis. The kit has 2 small transformers that I was concerned about. I should finish it up this weekend. Post a link to the pictures.

    audiobill

    Posts : 270
    Join date : 2014-03-13
    Location : Philadelphia

    Re: Damping Materials – What, When and Why?

    Post by audiobill on Fri Jul 31, 2015 2:11 pm

    I mean where is the kit from?

    aguaazul

    Posts : 45
    Join date : 2012-07-08
    Location : Livermore, CA

    Re: Damping Materials – What, When and Why?

    Post by aguaazul on Fri Jul 31, 2015 2:28 pm

    Lampucera1.0 + Lampizator EBAY

    audiobill

    Posts : 270
    Join date : 2014-03-13
    Location : Philadelphia

    Re: Damping Materials – What, When and Why?

    Post by audiobill on Fri Jul 31, 2015 3:15 pm

    The Lampizators are highly regarded, looking forward to your review!

    Sponsored content

    Re: Damping Materials – What, When and Why?

    Post by Sponsored content Today at 4:00 pm


      Current date/time is Thu Dec 08, 2016 4:00 pm