Acoustic Foam
Printed From: Speakerplans.com
Category: General
Forum Name: Advanced Discussion
Forum Description: Advanced discussion area for higher lifeforms
URL: https://forum.speakerplans.com/forum_posts.asp?TID=108671
Printed Date: 26 March 2026 at 10:04pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: Acoustic Foam
Posted By: Augusts
Subject: Acoustic Foam
Date Posted: 11 August 2024 at 5:52pm
|
Hi! Does anyone have info on what glue - technique do the factories use to glue acoustic fabric on the inside of the speaker grille? I have tried gluing Acoustic Foam with Bison Universal Colla spray, I spray it on the inside of the grille and it somehow manages to lay a layer here and there on the visible side of the grille and also it is unpredictable, sometimes it glues good, sometimes parts of the grille come off the foam when there is air moving through the grille. I have seen velcro used to keep a very thick acoustic foam in place but it does not work on any of the foams available in Adamhall, Thomann or TLHP. Please share if you have some info, I am probably not the only one struggling with this August
|
Replies:
Posted By: cravings
Date Posted: 11 August 2024 at 5:58pm
| 3m super 77. Its expensive, but I've read on here it's the only one that works.. and it's the only one I've used that works. |
Posted By: jacethebase
Date Posted: 14 August 2024 at 1:08pm
|
All the glue I have tried over the years has failed. Velcro is what i've had best results with for acoustic foam. ------------- www.wedding-production.co.uk www.stage2sound.com |
Posted By: RoadRunnersDust
Date Posted: 07 October 2024 at 11:19am
|
+1 for Super77 with the addition of a staple gun (but don't go crazy with the staples otherwise the foam'll get overly compressed and not work as well ------------- www.guildfordcablecompany.co.uk" rel="nofollow - www.guildfordcablecompany.co.uk |
Posted By: FOO
Date Posted: 07 October 2024 at 2:46pm
|
Put the foam on the outside of the grill. Looks clean and nice, and you don't have the issues with glue showing. Velcro is also a good idea.
|
Posted By: smitske96
Date Posted: 07 October 2024 at 3:45pm
| I've used mesh with some woodglue applied to the grill. It dries up transparant and did the job. Foam on outside/inside, both have their ups and downs. |
Posted By: Augusts
Date Posted: 07 October 2024 at 7:39pm
I'll try this one out
|
smitske96 wrote:Posted By: Augusts
Date Posted: 07 October 2024 at 7:41pm
I agreee, it does look good on the outside but you still have to get it there to stay in place. You need velcro that has long claws that can really dig in the foam. Do you have any specific Velcro that works best?
|
Posted By: erick77
Date Posted: 08 October 2024 at 1:18am
| Spray the back side of metal with super 77 . Let it tack up but not dry. Apply the foam. If you don't care about consemtics you could do a very light dusting to the foam also. That would ensure they bond. But one side should be enough . |
Posted By: FOO
Date Posted: 08 October 2024 at 6:26am
If you use 77 glue, and follow the instructions, then it should stick. But the grill should be cleaned before spraying. Or better, painted so it doesn't rust.
|
Posted By: kedwardsleisure
Date Posted: 08 October 2024 at 1:12pm
|
This one crops up on various forums from time to time! My method is this: Take some evostik, bondloc or similar polychloroprene based adhesive. Thin it down using xylene or toluene paint thinner from the paint shop (must be done outside). Dont go nuts but make it like single cream or thin honey. Note: white spirit, alcohol or turpentine does not work. Using a mini polythene foam roller, (the coarse white ones - smooth polyurethane will dissolve) apply the glue all over the rear of the grille. Using a rag dipped in the solvent, wipe any drips of glue that have made it through the holes (loading the foam roller with only a small amount of glue avoids this). Apply the foam or cloth, and press it down carefully all over. It should stick wherever it touches. Doing this avoids the spider-web effect of aerosol carpet glue (messy) and the risk of leaving little patches with no glue on them which sag later. Note that it's only good for unpainted or powder-coated grilles. If you spray painted it yourself first, you might find the foam or cloth comes off and brings the paint with it! edit: mix the glue in a metal or polythene container or it'll melt. I use an old linbin storage box.  ------------- Kevin North Staffordshire |
Posted By: MPASOUND
Date Posted: 08 October 2024 at 5:50pm
You could do all that but 3M 77 works perfectly for me. No spiders web effect with that stuff  ------------- It's just bits of paper flapping about in a box. |
Posted By: Augusts
Date Posted: 19 October 2024 at 10:40am
Very complex, but seems like this is bullet proof. Thank you for sharing ------------- Haf |
Posted By: Augusts
Date Posted: 19 October 2024 at 10:42am
|
Thank you everyone for your contribution! ------------- Haf |
Posted By: UncleRay
Date Posted: 05 November 2024 at 6:44pm
|
Hi MPA sound, i cant figure out how to private message you (apologies to hijak the thread!). Did you ever sell those limmerhorns? I would be interested in buying if theyre still available. Many thanks
|
Posted By: BJtheDJ
Date Posted: 05 November 2024 at 7:18pm
You'll need to have 10 points or more to send PMs ------------- I started out in this business with nothing. I still have most of it left. |
Posted By: MPASOUND
Date Posted: 05 November 2024 at 8:43pm
|
Sorry, those Limmers sold a while ago. Great horns though! ------------- It's just bits of paper flapping about in a box. |
Posted By: jacethebase
Date Posted: 17 November 2024 at 7:43pm
------------- www.wedding-production.co.uk www.stage2sound.com |
Posted By: Augusts
Date Posted: 21 November 2024 at 6:15am
Ou yea, finally, the real deal Thank you! ------------- Haf |