Home Audio Acoustics

**raZorTT** · **05-10-09, 10:16 PM**

Hi,

Living in Australia means GOM is a little harder to come by. I've only heard of one place in fact that sells it (thanks cinema mad) so I was wondering how would I audition other fabrics to see if they are suitable for treatments and potentially in front of speakers?

A couple of posts here have said if you can breathe through it, or if you don't detect any sound changes with the fabric next to your ear then it should be fine?

Any thoughts?

Cheers,
Simon

**thewire** · **05-11-09, 01:00 AM**

The breath test works fine for when you are shopping for any kind of fabric other than those that are marketed as AT such as Muslin or GOM. I do think I read a member was able to find Muslin in Australia for a reasonable price. You could also measure and look for a high frequency roll-off. It's what amounts to a small difference for sound for most people and it is quite often that commercial theaters do not equalize for such a thing. There is no rule for how AT it must be but dependent on the speaker it can sometimes make a difference. For example if your tweeter is a silk dome tweeter these are already going to sound smooth to most people and often adding AT cloth in front of it will make them sound less ideal to the inteded design by the manufactor. Which crossover it will use can also have an added effect but that will usually only be something to think of if say they are using ones that are larger in size.

**raZorTT** · **05-11-09, 04:18 AM**

Thanks thewire,

Maybe i'll be better of doing the area infront of the speakers in speaker cloth and looking for a GOM/Muslin for the treatment areas. I'm off to a fabric supplier at the end of the week and am hoping to find something I can use. Wish me luck!

Cheers,
Simon

**bpape** · **05-11-09, 06:01 AM**

The cloth in front of treatments isn't all that critical quite honestly. You just don't want something that won't pass air or it will reflect high frequencies.

On the other hand, cloth in front of speakers is extremely critical. I wouldn't do muslin in front of a speaker. GOM or a cloth specifically designed for speaker grille use (you know, the typical, stretchy, thin, black, poly stuff) would be the only thing I'd use.

Bryan

**raZorTT** · **05-11-09, 09:55 AM**

OK thanks Bryan!

**cinema mad** · **05-11-09, 10:28 AM**

I no Spot light in geelong vic sell 1.5 mt loom width Black speaker grill cloth at A reasonable price $13au mt I think, if you are interested I can give you the spot light product code.. They also ship Australia wide....

Cheers...

**raZorTT** · **05-11-09, 05:48 PM**

Hey Cinema Mad,

If you could that would be fantastic. I'm off to Spotlight in Queanbeyan so being armed with the product code would be a huge help!

Cheers,
Simon

**cinema mad** · **05-12-09, 06:11 AM**

Hi Simon,
The spotlight speaker cloth is as follows,

Name: Loudspeaker, PLU: 1283123" Width is 1.5mt and price is $12:95au

If your store does'nt have it you can have the Geelong store ship it to you, If you ask for the Manager Scott and tell him that Jason said that he you would look after you with the Loud Speaker Cloth...

Cheers Mate...

**Prof.** · **05-12-09, 06:54 PM**

Simon,

While you're at Spotlight, you might want to have a look at a material called "Black Poly Stretch"..
This is the material I used on my screen wall..
It's an open weave stretch material..1.5M wide and only cost $6.99/M. when I bought it..

**raZorTT** · **05-12-09, 07:00 PM**

Thanks for the info guys!

Much appreciated.

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