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  1. #1

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    Default Diffraction be gone (cheaper)

    I've been interested in the effect of using this, but every time I look at the $60ish for a couple of pieces of felt I just think it's too much.

    So I used the wonderful internet and found this:

    http://www.durofelt.com/image_26.html

    I bought a 12x24 piece of 1/4" wool felt for $17, shipping included.

    Just in case anyone else has been wanting to try it but didn't want to pay too much.
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  2. #2

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    For the tweeters????
    Hot Rodded SDA 1.2TL's, SDA 1C's, SDA CRS+'s...
    Powered By Wyred 4 Sound, STP-SE, SX-1000...
    MIT-Shotgun's ...

  3. #3

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    Yes.
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  4. #4

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    And it's 100% real wool! Rock on.

  5. #5

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    cool, I never want to pay much......so no paypal.;) can you send me a sample???

    RT1
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  6. #6

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    Quote Originally Posted by reeltrouble1 View Post
    can you send me a sample???

    RT1
    Ted, I will have some leftover, so yes, if you have a use for it I can send you a sample.
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  7. #7

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    cool beans, since your feeling generous.......can you recommend a Landscaper.....I guess they missed that customs charge????? not sure what that might be for you!!!!!!!

    hehehehehehe, ok, well, I will hit you backstage.

    Thanks.

    RT1
    REEL TIME THEATRE
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    Subs-Twin Polk CSW200
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    Everthing Matters...Tubes Rule...and It's Over until it's Not Over

  8. #8

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    Quote Originally Posted by Ricardo View Post
    I've been interested in the effect of using this, but every time I look at the $60ish for a couple of pieces of felt I just think it's too much.

    So I used the wonderful internet and found this:

    http://www.durofelt.com/image_26.html

    I bought a 12x24 piece of 1/4" wool felt for $17, shipping included.

    Just in case anyone else has been wanting to try it but didn't want to pay too much.
    Please let us know how it works. Thanks

  9. #9

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    My understand cutting this stuff is almost impossible - hence the cost of diffraction be gone...

    Looks like they CNC it....

    But 17 is definitely cheaper.
    www.Vr3Mods.com ///// www.Version3Audio.com

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  10. #10

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    why would wool be hard to cut, time was wool was used for all sort of things in all kinds of shapes and sizes??

    RT1
    REEL TIME THEATRE
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    Everthing Matters...Tubes Rule...and It's Over until it's Not Over

  11. #11

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    I dont think anyone on this forum can cut a 1.5" circle in that thick material the way they do.... nor cut the lines as straight as they do.

    The wool they use for those pads is DENSE, very thick and not easy to tear or cut in the least bit...
    www.Vr3Mods.com ///// www.Version3Audio.com

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  12. #12

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    I honestly never thought it would be difficult to cut. I got the medium density, so we'll see when it gets here. Lots of tools around here.
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  13. #13

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    its a 1/4 inch, seems like you could stamp it for a circle or clamp and cut......Ricardo will figure it out at least I think he will.

    RT1
    REEL TIME THEATRE
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    Everthing Matters...Tubes Rule...and It's Over until it's Not Over

  14. #14

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    tool 1 1/2 hole wool

    I know there is a joke in there somewhere
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  15. #15

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    Interesting stuff. Let us know how the tweak sounds. I might try some too.

  16. #16

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    Got it today; that was fast shipping!!!!

    It will be some time before I get to install this, but I'll post my impressions!
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  17. #17

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    get crackin..........

    anyway, looking forward to it.

    RT1
    REEL TIME THEATRE
    Onkyo-TX-NR5007
    B&K 7270 amplifier
    Polk SWA-500 Subwoofer amplifier
    OppO BDP-83
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    Subs-Twin Polk CSW200
    HTS5000


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    Wolcott Presence monoblock
    Musical Fidelity kW SACD
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    Acoustech Phono-Pre
    Sound Lab Millenium ELS
    BillyBags Rack
    MIT S1/3 cables
    Shunyata/PS Audio/Virtual Dynamics Power Cords


    Everthing Matters...Tubes Rule...and It's Over until it's Not Over

  18. #18

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    I'm also interesting in hearing how this works out. I've seen and, actually, own, some bookshelves that use a 5" foam diffraction wafer that has a 1+ inch cut out for the tweeter in the center.

    I'm also curious as to 'why' wool would be a first choice?

    cnh

  19. #19

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    Without doing too much looking around, I didn't see much so what is the use of this?
    Never kick a fresh turd on a hot day.

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  20. #20

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  21. #21

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    Geoff727 in Seattle applied some anti-diffraction material to the SDA-1C's I purchased from him last year. Looks to be a kind of felt. He did a great job of cutting and shaping it to the two tweeters per side. I'll see if I can find some pics of it he took.

    Here's a link to the thread he posted when he was selling them. I'm not sure of what exact material he used, but there are pics of them.

    http://www.polkaudio.com/forums/show...light=Geoff727
    Last edited by Fongolio; 10-18-2010 at 06:13 PM.
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  22. #22

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    That stuff's also supposed to be useful for lining the interior of the cabinets, much like you'd use polyester sheet batting. Good price compared to what I found when I was building my last set of speakers.
    Wris****ch--->Crisco

  23. #23

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    Ricardo- What's the word on this? I know this thread is 15 months old and you don't have the speakers anymore, but I'm interested in your impression about if the tweak improved anything or not. Seeing Trey's speakers in the flea market got me thinking about this.

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