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Recone Glue

N

nicksmurf111

Guest
Aug 25, 2015
43
5
Pittsburgh, PA
#1
What glue do you use for pro-sound cloth surrounds and spiders (spider to frame)? I've used the provided bottles of white glue before but I'm not sure what's in them...some kind of PVA glue. Is it's just a 1oz bottle of Elmer's? I'm tempted to try using Titebond II.

I have a EVM 15L that's seen better days and I'd like to get a 15B ready in the near future. I've reconed a 15B before, in addition to many other speakers, so I'm really into interested in discussing PVA glues.
 
#4
nicksmurf111 said:
I just really want to know what's in the generic white glue bottle.
Click to expand...

I use MG Chemicals, 8337 Speaker Service Cement. It is a rubber based product formulated for repairing speakers. Some details are on their site. I like to check out the MSDS Safety Data Sheets for some info. Other companies sell latex based products for this application. It is important that the glue dries without shrinking and remains somewhat flexible.

Some places sell Loctite epoxy for the voicecoil to cone, it has to be a strong joint.
 
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#7
That, too. We had a fairly grim joke about industrial painters learning what they were doing, then being really good for three years. After the third year of industrial painting, the solvents would turn them into gibbering idiots. Only it wasn't entirely a joke, unfortunately for those guys. Absorbing that stuff is awful for anybody.

For what its worth, I worked with a woman who liked to paint her finger and toe nails. I happened to walk past her desk while she was using some kind of finger nail paint/polish remover. I knew the smell and was astonished that she was just blithely using organic solvents right there, no ventilation, no thoughts. She was pregnant at the time. I thought she was nuts for using that stuff in the first place, let alone while pregnant. Oh, well. My workers wouldn't have been allowed to use that stuff without protective gloves and respirators, but she was free to do whatever she wanted to do.
 
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#9
That's true that acetone is a byproduct of breaking down fat in the body, part of out biochemistry, but in higher concentrations such as used in solvents, it is toxic.

I use acetone from time to time but I try to be careful. It is in many solvent based adhesives.
 
#10
If you can't get the manufacturer's recommended glue, the link shown above to the speaker recone supply company will work fine ( Speaker Adhesive Glue - 1oz Bottles - 3 Pack - Orange ... ). Use that glue as per the recone supplier's instructions. I've used that glue before and it's fine.

I was going to recommend the Moyens solvent-based glue that JBL supplies with their kits (the orange stuff). It works great for any speaker-recoding need. But then I remembered that you can buy it in only 5-gallon buckets at minimum. At $90/gallon, that's not quite practical. It's taken my former employer 5 years to go through this last 5-gallon pail. And we have to be vigilant in storing it because of the 2-month shelf life. I can say that it's been fine because of our storage practices.
 
#12
Geri O said:
If you can't get the manufacturer's recommended glue, the link shown above to the speaker recone supply company will work fine ( Speaker Adhesive Glue - 1oz Bottles - 3 Pack - Orange ... ). Use that glue as per the recone supplier's instructions. I've used that glue before and it's fine.

I was going to recommend the Moyens solvent-based glue that JBL supplies with their kits (the orange stuff). It works great for any speaker-recoding need. But then I remembered that you can buy it in only 5-gallon buckets at minimum. At $90/gallon, that's not quite practical. It's taken my former employer 5 years to go through this last 5-gallon pail. And we have to be vigilant in storing it because of the 2-month shelf life. I can say that it's been fine because of our storage practices.
Click to expand...

Moyens 3087 is apparently an equivalent product to the MG Chemicals speaker service cement, or so MG claims. There are speaker parts places that sell the Moyens product in small tubes. The same tubes that come with the JBL kits. Here is one place: Speaker Repair Glue / Adhesive, Moyen RS-3087 - Sound Speaker Repair.


The advantage of a small tube is that you open it, use it, and dispose of the remainder when the job is done. So it is always fresh.
 
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#13
Different manufacturers use different adhesives (in part some do it to comply with environmental requirements). The most common surround glue is a rubberized PVA that contains latex compounds and is very different from white glue or Titebond (which I would never recommend on any speaker).

None of these adhesives (PVA based or cement based) should be used with high performance VC to spider joint as the stress there is very high. The two wost common adhesives are epoxy based and a gelled water activated cyanoacrylate based adhesive formulated for this application. The accelerations and forces of modern high powered speakers requires this.
 
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