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Old 1st February 2013, 05:40 AM   #1
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Default Best speaker gasket material?

This has probably been answered before, but I couldn't find an answer by searching. I am rebuilding speakers I built in 1979 as the woofers needed to be refoamed and I replaced the caps on the xover. It is a sealed 3 way design and in remounting the woofers, I am wondering what has transpired since I built them in sealing the woofers to the cabinet. I used "wet" silicon caulking when first attaching, but the woofers were hard to remove as they stuck to the MDF and pulled some of the wood away from the cabinets when removed. I thought this would be the best seal especially where the bolts passed through. Is there a better way to get a good seal currently?
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Old 1st February 2013, 07:12 AM   #2
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Foamed Neoprene is about as good as it gets, soft, pliable and easily compresses.
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Old 1st February 2013, 04:43 PM   #3
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That was what I was advised by Falcon Acoustics where I originally purchased the speakers and xover materials. I'm not sure where to get such a gasket product here in the USA. Can anyone from the US give me assistance on finding foam neoprene suitable for speaker gaskets.
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Old 1st February 2013, 04:50 PM   #4
xrk971 is offline xrk971  United States
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I use this from Michaels craft stores - works great.
Creatology? Foam Sheets

You can get it with adhesive backing too.
Sticky Back Foam Sheets
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Old 1st February 2013, 05:14 PM   #5
chrisb is offline chrisb  Canada
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When original gaskets are missing/ damaged, I've had great results with thin closed cell foam self adhesive weatherstrip tape ( 1/8" thick ) - cheap at any of the home reno / hardware stores.
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Old 1st February 2013, 07:14 PM   #6
JMFahey is offline JMFahey  Argentina
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Quote:
Originally Posted by Spinosaurus View Post
That was what I was advised by Falcon Acoustics where I originally purchased the speakers and xover materials. I'm not sure where to get such a gasket product here in the USA. Can anyone from the US give me assistance on finding foam neoprene suitable for speaker gaskets.
Thanks.
Buy a sheet of what's often known as EVA Rubber.
Spongy but firm open cell neoprene foam, the kind used for kid's toys, slippers, bicycle/fishing rod handles/mousepads/1000 other uses.
Available everywhere, including Art shops, "all rubber products" shops and such.
Glue it with contact cement.
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Old 1st February 2013, 07:19 PM   #7
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Moretite "window caulking rope" or similar other branded stuff... get fresh stock, make sure it is a bit warm, and roll it a bit thinner than the 3/16" or so it comes in, push to flatten on the box or back of the speaker rim... it squishes and seals, never hardens fully. Comes in grey and brown typically.

Works excellently... lasts forever. Good on windows too...
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Old 1st February 2013, 07:31 PM   #8
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This says minimum compression and it's 3/16", so I don't know if that would be too thick for you...

3 8"w x 3 16"T 10'L Closed Cell Neoprene Weather Stripping | eBay
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Old 1st February 2013, 08:14 PM   #9
Colin is offline Colin  United Kingdom
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Do not do as I once did and use bitumen tape. You'll never remove the drivers.

I like the sheet ideas mentioned above. When using weather strip or similar I always fuss about getting the ends to meet without a leak.
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Old 1st February 2013, 08:17 PM   #10
xrk971 is offline xrk971  United States
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I have also used plumbers' putty which never hardens but is a bit oily, so don't use on raw wood if you plan to finish it.
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