Nope, not at all. The only rattling is from the tailgate, but only when I really have it cranked up or something really bass heavy comes on. Had I know I was going to put a sub in, I would have put some sound deadening in when I did the backup camera.

 

The rattling is likely from the license plate frame. I put self-stick weatherstripping behind my frame and no more rattle when I close the back gate.

 

You're probably right - I'll just put one of the little foam rubber squares I always have laying around the garage. But it does show that the sub does kick decently for its size and where it's located.

 

This really informative. Thanks!
I have a RF PS-8 salvaged from another car, and after seeing what you've done with yours, it seems you've found a logical place. I'm going to give it a try.

 

Just curious, since I'm going to install a backup camera: where would you have put the sound deadening?

 

Here's a picture of how I mounted my camera. With the black license plate frame it's practically invisible. It would have been good had I placed a little sound deadener on the other side of this panel. Be careful when you take the trim off so that you don't accidentally break off the rear defogger connectors.

 

Good advice, thanks.