Sounds good. Play them at low to moderate levels at least for the first few days. When you first put them in, they'll probably sound like there's something covering the speaker. They just need to break in.

 

Just wondering what amp are you using on the 10w3..

 

You can also save some cash using eDead v1SE2. It is pretty much the same thing as Dynamat but way cheaper $1.60 a sqft and you can save 20% more by going to their forums and getting the savings code.

 

I've got my Kappa's sitting right next to me. I hope to have them installed by next week so I'll post up my impressions with the Kappas and sound dampening (w/o any additional amps or speaker upgrades). Take a look at my thread below involving my sound dampening experience.

https://g35driver.com/forums/audio-video-electronics/93300-more-sound-deadening-g-pics.html