A few weeks back I posted that I was going to seal the surrounds of my AR-4's. I did it with thinned down latex sealer and some black acrylic paint. Like I reported, the difference was significant.
Since then I bought some of the Global WD Dampener Adhesive and proceeded to reseal the cloth surroundson my AR -2ax and AR-3's. Thinned with some water and another drop of black paint
I can't say if the resonances were changed because I don't own a generator, but I notice that the bass has improved with the AR-3's. I really can't detect any changes to the AR-2ax's but I had to recap all the x-overs anyways (cap values had increased X4 in some cases) and I also tore apart and cleaned out all the pots.
The Global WD solution may be PVA, but it sure didn't smell like any PVA that I've ever used. I telephoned the company and spoke to Rhett Molitor, I think he is the manager there. He assured me that this formulation was developed not to dry or stiffen over time. I put a fairly thin coat on so I'm crossing my fingers hoping that I didn't change the Fs too much.
Global does have a Black Nitrile adhesive BC series. According to their site
"These nitrile rubber cements are designed to bond cloth and foam surrounds to the frame and cone. They are also excellent for bonding gasket and spider to frame."
I wonder if this would be another suitable sealer for the surrounds?
Cloth surrounds
in Acoustic Research
Posted
Hello guys;
A few weeks back I posted that I was going to seal the surrounds of my AR-4's. I did it with thinned down latex sealer and some black acrylic paint. Like I reported, the difference was significant.
Since then I bought some of the Global WD Dampener Adhesive and proceeded to reseal the cloth surroundson my AR -2ax and AR-3's. Thinned with some water and another drop of black paint
I can't say if the resonances were changed because I don't own a generator, but I notice that the bass has improved with the AR-3's. I really can't detect any changes to the AR-2ax's but I had to recap all the x-overs anyways (cap values had increased X4 in some cases) and I also tore apart and cleaned out all the pots.
The Global WD solution may be PVA, but it sure didn't smell like any PVA that I've ever used. I telephoned the company and spoke to Rhett Molitor, I think he is the manager there. He assured me that this formulation was developed not to dry or stiffen over time. I put a fairly thin coat on so I'm crossing my fingers hoping that I didn't change the Fs too much.
Global does have a Black Nitrile adhesive BC series. According to their site
http://www.globaladhesives.net/surround_adhesives.htm
"These nitrile rubber cements are designed to bond cloth and foam surrounds to the frame and cone. They are also excellent for bonding gasket and spider to frame."
I wonder if this would be another suitable sealer for the surrounds?