6.5" Car Speaker Foam Rings, 6.5inch Universal Self Adhesive Foam Speaker Enhancer, High Rebound Sponge Bass Blocker Kit Waterproof High Rebound Car Door Speaker Fast Rings 6PCS

These worked great with my new car speakers. I like that you have several different sizes in one bundle so you can adapt them to your particular need.

Works well, but it would be nice if they were taller. It doesnt seem like they would be that effective or even provide any noticeable difference

I picked up a set of 6 of these 6.5" foam speaker rings. The foam is dense but flexible enough to fit contoured areas and compress if needed. The 3M tape attaches with ease and has a very secure hold. Installation was very easy. My set did not come with any instructions but I didn't need them form installing different types of audio equipment over my lifetime. I am sure there are plenty of YouTube videos out there if you should need help or ideas.I placed one ring around the front face of my speakers to direct sound past body panels, 1 ring on the back for sealing the speaker to it's mounting point and to eliminate any vibration, and the rest of the rings I used as sound deadening pads behind the speakers on the vehicles body. This kit worked out great for my needs, my amplified system sounds great, and I would not hesitate to pick up additional sets in the future or recommend them to others. I used these rings with the addition of sound deadening mat, screw clips and screws, and it took away all my door and rear quarter panel vibrations / distortion. The acoustic sounds seem to be directed into the cabin of the vehicle much better now with the addition of these rings sealing to the cabin panels.

Great foam rings for sealing off your door speakers. As a bonus the centers are included and you can use these being the speakers to help absorb sound waves similar to using polyfill.