Review on Dynamat 10435 12x36x0.067 Sound Deadener: Self-Adhesive Xtreme Door Kit for Effective Noise Reduction by Drew Poulin

I have used Dynamat to dampen speaker basket "ringing" with my Polk SDA-SRS midrange drivers and subwoofers. I had to work a bit, only 18 drivers. The Dynamat brand is a bit more expensive compared to others like Kilmat, but the Dynamat are hanging on! I didn't want to risk the "things" INSIDE the speaker baskets falling off and landing or I probably would have cut my wrists! This material perfectly dampens resonances and makes the sound noticeably cleaner. What I have left over is used in the door panels on my '13 Focus where I also have resonance issues. GOOD MATERIAL, I will buy again!