I have a 2007 g35x sedan with the premium bose sound system. The rear sub doesn't seem to be producing any sound/bass at all. At least before it would vibrate the read window a bit. I replaced the BOSE AMP fuse on the driver side, but it hasn't changed anything. A quick search shows that there are two fuses one for the amp and one for the sub. Where is the one for the sub?

Thanks

EDIT: I found the other fuse and replaced it, but i'm still not sure if it did anything...

 

BUMP. It didn't do anything, I replaced both fuses. If I turn the bass all the way up, treble all the way down, and the fade to the rear I barely hear anything from the rear speakers.

 

Just replace your speakers with OEM speakers. They are probably blown and now died. Mine were blown as well, but then I got 'em replaced and no problem.