2008 Yaris sedan ‘S’ sound deadening project.

[cm_ls1]

Originally Posted by derickveliz2

We'll see how it works for Herb? maybe he would need to fold down one of his seats!

D.

Bass passes through the seats whether they a folded down or not, thats not the problem, the issue here is if the wavelengths of the bass cancel each other out, of course i would suggest trying both and see what sounds best

Imagine that the vertical line on the left is the back of yourbsedan, the red line is the bass coming out of the sub, the yellow is it reflecting, what you want is these lines to overlap or the sound will cancel each other out reducing bass.

So the last image is your ideal scenario