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Old 18th January 2005, 03:26 PM   #1
jered22 is offline jered22  United States
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Default Speaker Grills

I was wondering if anyone can tell me how to build your own speaker grills. I would like to build some custom sizes and was not sure what material they are built out of. Or is there a good place that sells them pre-built for less? I am waiting to purchase these before I build the boxes to make sure that it will fit.

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Old 18th January 2005, 03:32 PM   #2
adason is offline adason  United States
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hi jared22
do you realy need a grill?
grills are only to protect speakers during transport, they should be removed for listening
why would you want a curtain between you and your speaker anyway
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Old 18th January 2005, 03:36 PM   #3
jered22 is offline jered22  United States
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I guess I have fallen prey to the conventional speaker look. I was going to purchase the TangBand 881's and do the modification to improve the sound. The modification messes with the original look of the driver and does not look all that good once it is done. I was going to cover the "new look". Does a speaker grill really change the sound of the speakers that much? If so forget it.

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Old 18th January 2005, 04:06 PM   #4
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I use MDF, no joinery... just cut to size, cut out the desired space for the drivers, etc. leaving and inch and a half or so at the corners.
Use a roundover on the inside and bevel the outer edge on the face at about 60 degrees, and cover with fabric.

You could use frames to save money if you have decent wood lying around, but I'd suggest spline or rabbeted gussets at the corners for strength and lapped rails. (spreaders) MDF frames take less than 5 mins on a table saw.

Good looking grills quadruple the WAF value.

It would be interesting to see exactly what frequency changes are caused by common grill fabrics. It doesn't seem to hurt my NSB OB arrays. In fact the whole cabinet, (7' baffle and two sides) could be put in a big stretch polyester toob sock, making it the cheapest finished cab I can think of.
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Old 18th January 2005, 05:59 PM   #5
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Grill fabric may reduce some of the very HF and is sometimes beneficial if you experience hiss. Perhaps the issue is less the fabric and more the frame. If you've gone to the trouble of creating a low diffraction front baffle what does adding a grill frame change?

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Good looking grills quadruple the WAF value.
The true motivation.
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Old 18th January 2005, 06:04 PM   #6
adason is offline adason  United States
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Quote:
Good looking grills quadruple the WAF value.
i agree with that
but you can make nice looking speakers without the grill too
its sound that matters to me
as i said it does not make sence to me listening from behind a curtain, unless you want intentionaly tame the tweeters

i have never seen high end speaker designed with cloth over the tweeter, you may as well put plugs into your ears (i am exaggerating offcourse)

Quote:
It would be interesting to see exactly what frequency changes are caused by common grill fabrics. It doesn't seem to hurt my NSB OB arrays.
there is no such thing as transparent cloth
you can find many pages dealing with this issue
i have seen more than dozen speaker frequency responses with and without the grill and they were always worse with grill on
for instance:
http://www.wsdg.com/resources/resour.php?SL=te&BL=3
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Old 18th January 2005, 06:18 PM   #7
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You could imbed magnets in the baffle and grill, so they are easily removeable for serious listening and good WAF and protection the rest of the time. I've got a 4yro and a 9mo, so it will be years before I can go completely without grills. Little ones think dust caps are just big buttons for pushing.
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Old 18th January 2005, 06:29 PM   #8
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Quote:
Little ones think dust caps are just big buttons for pushing.
AH HA! So that's it. I couldn't fathom what the fascination was. The button theory makes sense.
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Old 18th January 2005, 06:36 PM   #9
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I learned my lesson quickly. Luckily it was with $1.50 drivers. Another time the 4yro used one of my Shiva's as a trampoline. Amazingly it still worked fine after a dustcapectomy.
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Old 18th January 2005, 06:37 PM   #10
adason is offline adason  United States
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that must an archetype or something
my friends son always goes for phase plugs on my lowthers!
fortunately they are high enough so he can not reach them
but he tirelessly tries till some of us lifts him to gently push it
than he goes away happy
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