Sound deadening questions

[sqcomp]

I have enjoyed the results greatly. For my purpose I absolutely want to do the roof. I just had the car's windows tinted but I may actually go one more step and have a security coating put on the windows as well. From my understanding, it may actually reduce wind noise a little.

With the system that is about to be installed and the reason for it, I want to make sure the Yaris is as quiet as it can be. I'm trying to make the car as sonically efficient as possible. Why? So I don't have to crank the volume up. I have great headroom from my signal chain and I want to have the lowest noise floor possible.

Dynaliner and Ensolite are slightly different foams that assist in the absorption of certain frequencies of sound. I used the Dynaliner on the rear doors because my wife packed up my Ensolite into storage while I've been here in Iraq. Having never been to the storage unit, I didn't want to dig around while on R&R. So, the sound shop owner just cut me a deal on the Dynaliner so I could do the back doors (and so he could clear the box off his sales floor). That Dynaliner I used is very nice. It is also thick at a 1/2 inch. As you could tell from the little video snippet, it works well.

I think I'm the first customer of his that has taken a VERY personal interest in doing my own install with his support. His only other customer that has something even close to me had him do all the work. I've just gone so much farther into what is going on that I make the other customer look like a 5th grader.

I'll also be fabbing up some under dash pads to close off the semi-open dash area that a lot of cars have (at least by the driver's side). This will allow my mid-range speakers less "junk" to reflect off of and work in a controlled area down by the kicks. The top of the dash will also have a dashmat put in. The classic dash mat carpeting "soaks" up the reflections off the windshield from the A-pillar mounted tweeters and will stabilize the imaging of the entire component system.

The other reason I'm deadening the roof is what will be in the trunk. Two Image Dynamics IDQ 12 4 V3 subwoofers pushed by an Image Dynamics ID Q1200.1 amplifier loaded to 1 Ohm. Yeah...if anyone has ever had two good 12"s pushed with PLENTY of power...

The enclosure will be directed through the heavily deadened back deck 6x9 mounting holes. What happens when the pressure comes through the back deck? It travels up the glass and reflects off the roof. That's why. :)

I'll be posting the roof and back deck deadening amongst MANY other tutorials here in a month. I'm 20 something days away from coming back home off this deployment in Iraq...

Keep watching. I want to show everyone what can be done with this great platform.