Hi everyone.
I'm pretty happy with the standard s4 b7 audio without Bose, but would like a bit more bass.
I want to do it as clost to stock as possible.
For this, I was thinking a very small amp along with just replacing the small sub in the top of the trunk.

Has anyone does something similar or have any other thoughts?

thanks.

<center><img src="http://pictureposter.audiworld.com/66252/sub_collage_mid.jpg"></center><p>The transformation is astonishing, but you'll need a bigger amp than you think (200wrms minimum)
and of course you'll have to run a new power cable.