Good sound

Adding this definitely helped with my sound quality in my doors,improved bass response.

Not bad

I bought this to keep the rattles away in my door panels. I used it in conjunction with some NVX dampener that was put in my doors. This foam sheet can be cut to size and placed in the door panel to cushion vibrations and rattles from driving or pushing the speakers hard. Foam is nice and thick and there is a good amount of it for the price. Adhesive on the back side is sticky but will release easily if you want to do some adjusting after application. It doesn't absorb sound or do what the rubber/foil sheets do. It's there to be a pad between panels that can flap against each other and rattle/buzz.

By Kenneth on August 13, 2015 Verified purchase

This stuff WORKS.

5 stars. Stinger is a good brand and never disappointments. I did gain SPL tbh.

By Michael on April 7, 2020 Verified purchase

Stinger RKO12

Industrial Strength Closed Cell Foam with Adhesive Back. I used it on several areas.

best acoustic sound

Great product if you know how to use it, my front stage got improved allot

By Amin on June 28, 2016 Verified purchase