Looking for tips on speaker cone repair

tub...@myshop.com

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Oct 9, 2019, 6:29:52 PM10/9/19

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Looking for tips on speaker cone repair.

Years ago, I used rubber cement and toilet paper on the rips. Any better
suggestions?

Fox's Mercantile

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Oct 9, 2019, 7:08:24 PM10/9/19

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Use a flexible glue and tea bag paper.
Do NOT use any of the silicon rubber based glues.

--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com

gregz

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Oct 10, 2019, 3:51:27 AM10/10/19

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Use Aleen's Tacky Glue with tissue placed on rear for best look. Elmers
Shool or Glue-all will also work on center portion. Aleen's is flexible and
I think Glue-All is flexible, not School Glue.

Greg

tabb...@gmail.com

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Oct 10, 2019, 5:37:55 AM10/10/19

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ISTR using record sleeves long ago for the paper. Re glue it needs to be a bit flexible, but not too floppy like silicone.

NT

Stephen Wolstenholme

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Oct 10, 2019, 7:25:09 AM10/10/19

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Years ago I mended a speaker cone with soft cloth glued on with
Evostick.

Steve

--
http://www.npsnn.com

peterw...@gmail.com

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Oct 10, 2019, 8:53:56 AM10/10/19

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There are many different kinds of cones, and each type has different options.

For run-of-the-mill AA5 speaker (cheap), they usually crack rather than tear. A soft-set hot-melt glue across the tear usually does it. Do a zig-zag first, then cover the tear completely. Hotter the better, so the glue soaks into the paper. By the way, there is nothing wrong with hot-melt glue with silicon admixtures if applied hot enough. Other than the cost. And of one uses archival-grade glues, oxidation is greatly reduced. It's only money - and six sticks will do, likely, 120 speakers, so the cost-per is minimal.

https://www.gaylord.com/Preservation/Conservation-Supplies/Adhesives/Thermogrip-6363-Hot-Melt-Adhesive-(6-Pack)/p/636315

Most cone paper is very hard to retain rigidity in use. What goes back needs to be able to accommodate the hard paper so as not to tear again on the seams.

This stuff is ideal:

https://www.amazon.com/Lightweight-Non-Woven-Fusible-Interlining-Fabric/dp/B00P1J8IJU?ref_=fsclp_pl_dp_3

And a lifetime supply for a few bucks is not hard to take.

None of these beat professional reconing, but many applications are not worthy of that expense

Peter Wieck
Melrose Park, PA

amdx

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Oct 10, 2019, 10:51:08 AM10/10/19

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How about just reconing it, it's not difficult.
Mikek

tub...@myshop.com

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Oct 12, 2019, 9:41:31 PM10/12/19

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Its an old 8 inch speaker that I got in a box of electronic odds n ends
at an auction. It probably came from an old consel stereo. The tears are
from being abused during handling, not a dried up cone. Its the old
black paper. I was going to remove the fairly large magnet and toss the
rest of it. But I connected it to a radio and even with the torn cone it
had good sound. So I decided to repair it.

Due to availability of glues, I used Elmers rubber cement with toilet
paper strips. It's solid now, and has good sound. Ill probably hang it
on the wall above my bench for a test speaker. It sounds much better
than the 4 inch table radio spkr that I have been using.

Jeff Urban

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Oct 12, 2019, 10:36:14 PM10/12/19

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>How about just reconing it, it's not difficult.

It is a mater of getting the cone. And the voice coil has to match. Either that or you got a hell of alot more work to do.