I got the speaker adapters and the block off plates. Waiting for good weather to put it all together. After seeing how much material you get for soundproofing I did a little research online I found that the sound deadening material is probably meant to go behind the speaker inside the door (inside of outside door skin directly behind the speaker) This will help with sound being redirected off the door and blocking the low frequency response of the door speakers and rattling. Makes sense seeing as there is one sheet per speaker, definitely not enough to cover the whole outer door panel. Very nice product and if you get the complete kit it is a complete kit, all you need to make a huge difference in sound. I have no doubt that once installed by hypotheses will be proven correct.