Was around town the other day doing the shopping thing, came across some square piece's of dynamat for a couple bills or so. So i ask myself, my speakers sound pritty damn good right now, (infinty refernce 6.25 compents) in my EG sedan. Would adding these to my setup make a audio differnce or am i just adding weight to my car and lossing weight from my pocket.

 

If you're looking at the reflex pads, they have some ridges molded into the material, I use them and am happy with them. They sit behind the speaker code and cancel some of the standing waves.