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Thread: Diaphragm Damping Agents

  1. #16
    Senior Member Ian Mackenzie's Avatar
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    If you do a search on google there are local firms that specialise in material vibration and damping agents used in structural engineering.

    Check it out and contact a product manager for applications data.

    I very seriously doubt acquaplas is the "only" solution to that particular issue.

    With a few rare exceptions (aka M1 mid/hf driver) a compression driver was never designed for hi fidelity and nor was a horn for that matter.

    But we still like to play with the First Watt.

    If you want something really good consider a Scan Revelator tweeter loaded with a properly designed low profile wave guide.

  2. #17
    pocketchange
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    Arrow Snooze... you loose!

    I'll step up to the plate on this... FWIW

    In making most anything but a pancake, stress is induced. This is the reason for post production processing, if the item in question is metal (and this includes many other materials as well).

    Over the last 40 years NASA has spent a potload of funding learning how to get things to last longer. Read this to include getting things to bend, slide, stretch, flex, cut longer etc., etc., and sound BETTER.
    Technology is moving forward all the time.

    I'm just wondering if the diaphragm producing Industry around the world are playing with these various processes. You sleep, we loose...

    Keep in mind, most of us would be a little happier if our razor blades lasted longer... unless you have stock in Gillette or Shick. pc

  3. #18
    Senior Member Ian Mackenzie's Avatar
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    Oh I get it,

    Well Space Shuttles must be their forte.

  4. #19
    pocketchange
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    Nope, I somehow doubt it.

  5. #20
    Heather [Senorita member] hjames's Avatar
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    Quote Originally Posted by pocketchange View Post
    Over the last 40 years NASA has spent a potload of funding learning how to get things to last longer. Read this to include getting things to bend, slide, stretch, flex, cut longer etc., etc., and sound BETTER.
    Technology is moving forward all the time.
    nah - NASA has spent a potload of money maintaining a status quo - nursing along a second rate space delivery system that was old tech before it was built. A typical federal agency concerned more with continued Employment rather than Innovation.
    Not my words, read the aerospace engineers who know better at:

    http://www.jerrypournelle.com/slowchange/SSX.html

    as well as

    http://www.jerrypournelle.com/report...ettospace.html
    2ch: Oppo, Acurus RL-11, JBL 240ti, Heath AS101, Carver TFM-25,Von Schweikert VR4
    7: Oppo BDP103D, B&K, UREI 809A, JBL B460,

  6. #21
    pocketchange
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    No Question about it, "they" know how to pi$$ "it" away...

  7. #22
    Senior Member Ian Mackenzie's Avatar
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    A quick search suggests some other manufacturers are using laminate diaphragm structures.

    Again this is not new.

    I spent 10 years in the polymer coating and laminating industry with outfits like 3M and Du pont. A lot of damping agents are used in automotive, civil and mechanical engineeriing applications.

    Getting the coating to stick the base material is the key.

  8. #23
    pocketchange
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    Reference my inq. to post production processing.
    I'm up on coating(s), I do use them and have for 20 years, was also in the "biz" and consult from time to time.

    www.300below.com

    Check this out if you care to.

  9. #24
    Senior Member Ian Mackenzie's Avatar
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    Yes,

    I landed the Tardis once a 1km below the surface of Mars and my companion stepped out the front door before we checked the outside temperature.

    The poor girl's been stuck on hi beam ever since. ...not that I mind..LOL

  10. #25
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    Ian's correct in saying there are many alternatives to Aqua****, most are more affordable and readily available. Forget the brand name and search out the product(s) that meet your particular requirements. Viscoelastic damping products are commonly used in industrial mfg., HVAC, automotive, and aircraft industries, to mention just a few.

    This, of course, requires one to KNOW the requirements, as the application of random goops to diaphragms, horns, or enclosures with hopes of improved performance is very unlikely to be successful.

  11. #26
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    Quote Originally Posted by Ian Mackenzie View Post
    Yes,

    I landed the Tardis once a 1km below the surface of Mars and my companion stepped out the front door before we checked the outside temperature.

    The poor girl's been stuck on hi beam ever since. ...not that I mind..LOL
    ?

  12. #27
    Senior Member richluvsound's Avatar
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    Quote Originally Posted by Ian Mackenzie View Post
    Yes,

    I landed the Tardis once a 1km below the surface of Mars and my companion stepped out the front door before we checked the outside temperature.

    The poor girl's been stuck on hi beam ever since. ...not that I mind..LOL
    Ian,
    I trust you mean she is now incredibly bright !!!!

    interesting stuff.

    Rich

  13. #28
    Senior Member Ian Mackenzie's Avatar
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    Rich,

    I think you get it. The yanks wouldn't.

  14. #29
    Obsolete
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    Quote Originally Posted by Ian Mackenzie View Post
    Rich,

    I think you get it. The yanks wouldn't.
    Um, actually we would; On the first reading to boot!

  15. #30
    Senior Member Ian Mackenzie's Avatar
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    I forgot you get your share of cold weather.

    Probably one of the few reasons you get out of bed some (chilly) mornings!

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