Diffraction be gone (cheaper)

Ricardo

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.

Toolfan66

For the tweeters????

Ricardo

Yes.

ShinAce

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

reeltrouble1

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

RT1

Ricardo

reeltrouble1 wrote: »

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.

reeltrouble1

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

vmaxer

Ricardo wrote: »

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

VR3

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.

reeltrouble1

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

VR3

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...

Ricardo

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.

reeltrouble1

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

hoosier21

tool 1 1/2 hole wool

I know there is a joke in there somewhere

Ern Dog

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

Ricardo

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

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

reeltrouble1

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

anyway, looking forward to it.

RT1

cnh

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

Toxis

Without doing too much looking around, I didn't see much so what is the use of this?

Ricardo

http://diffractionbegone.com/

Fongolio

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/showthread.php?t=79106&highlight=Geoff727

strider

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.

Ern Dog

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.