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Old 1st July 2005, 05:45 PM   #11
Vikash is offline Vikash  United Kingdom
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too late now probably, but magnets might have been useful here...
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Old 1st July 2005, 06:16 PM   #12
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Default Re: Speaker Grills howto

Quote:
Originally posted by RCBandwidth
Some good info on grills for you.....Bob C.


http://www.humanspeakers.com/howto/grill-cloth.htm

I've used a similar method, although using hot melt glue. Wear gloves or get burned. Staples work, but I've found them difficult to get the cloth smooth. Another option is to rout a groove in the frame to accept screen retaining strips - make it easy to change grille cloth if your decor needs change. thanks to Lou Lung for that idea - google on "lungster"

regarding the diffraction issue, I attached 2-1/2" lengths of 3/4" dowel the frame before putting on the cloth. Sort of like a short table. Plastic grill mounts are in the ends of these "legs". I used a 3/8" roundover on all edges. This puts the cloth 3-1/4" from the tweeter. The result is a barely perceptible difference between grills on and off. On is suitable for all but the most critical listening. Not my idea, I think it was Lynn Olson's.
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Old 1st July 2005, 06:30 PM   #13
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http://www.humanspeakers.com/howto/grill-cloth.htm

Hey that's exactly how I've built my grills - never even read that site.

Although "the best grill is no grill" for best sound, many people like them because they give a more finished look to a speaker and blend in better with the home decor - we're just used to seeing them that way. I don't blame purists for deleting them though - especially with some really nice looking drivers - why hide them?

Anyway, I built mine with 1/2" quarter round pine moulding with 1/4" particle board as a base. I first cut the board to the outside dimensions of the frame I wanted, then cut out the inside to 1/2" - this gave me a strong, flat base to glue strips of the moulding to. I cut the moulding square, and bevelled the corners by hand with a dremel tool. I sanded them smooth and filled imperfections with wood putty. Then it was just black paint and attaching the cloth as in the link above.

Sidebar - I actually use small strips of high quality velcro to attach the grilles to the speaker - not as neat as pegs but oh so easy! Incidentally I get all my materials at Home Depot.

I don't know if this should be a new thread, but maybe some of you can contribute other ideas you've had about non-cloth type grilles, like metal screens or very thin vertical bars, etc. These would look great if properly done, leaving the drivers visible and hopefully not compromising the sound with diffractions, ringing, etc. If you've done anything like this it would be great to see photos, etc. - maybe posted on other threads that you know of. I'm going to do a search too. Thanks!
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Old 1st July 2005, 06:45 PM   #14
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I used 3/8 MDF and these

http://www.partsexpress.com/pe/showd...number=260-367

The grill cloth I got from EBay

This works well for me since only my bass drivers are in boxes. In your case the tweeters baffle (and the few inches around it) can be extended 3/8 inch beyond the main baffle and a matching cutout made in the grill.

Radius the edges.
Use foam to isolate the grill surface for the baffle.
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