Buy Cascade VB-2HD Damping Sheet 13.9 sq. ft.Cascade VB-2HD Damping Sheet 13.9 sq. ft. Product Description:
Product Description
VB-2 is a flexible, odorless and lightweight mineral filled vinyl-copolymer damping sheet.
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why this is a very good idea.
By Eric Hirsch
After a lot of study, I ordered this to line the inside of my DIY woofer box. (I'll also use some fiberglass.) The most up-to-date damping for cars are "constrained layers" backed with aluminum. BUT the layers are not really constrained if they are glued-peel-and-stick to a medium density composite cabinet. Then I realized that mass-filled vinyl is in effect a bunch of very-well constrained layers, since each particle is surrounded by elastomer, and so can turn the vibration energy into heat in effectively the same way a constrained layer does by resisting the movement and turning it by friction into heat -- and maybe even more efficiently, since the surface area of the particles could exceed that of a flat constrained layer. We'll see. But I thought others might be interested in the reason for my provisional 5 star rating. I'd be grateful if some physicist came along and commented on my reasoning.
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