Speaker Insulation? (1 Viewer)

[JasonHendricks]

Hello. I've had a home theater in a box for quite some time. I recently decided to rebuild my speaker enclosures to give them a more solid look. When I disassembled the old ones, there was a strip of insulation glued to the inside walls of each speaker. I am curious as to the purpose of this insulation and what would be considered a good replacement, or if it is even necessary at all. I believe it would be some sort of sound dampener, but it is just a guess. The enclosures in question are the center channel and the surround speakers. Any help would be greatly appreciated. I am holding off sealing the speakers until this issue is resolved. Thanks for reading everyone.

 

[Mike Gov]

Im curious as well!

 

[John Garcia]

It is a sound damper to control resonance in the cabinet.

 

[Garrett Lundy]

Dynamat, while a car-audio product, should be a sufficient upgrade for your speakers. And its self-adhesive too!