after a month of ownership I just noticed the rear sub. Not much comes out is it just a base reflex or is it blown because it sucks

 

It is only a shallow 8" sub in a tiny sealed enclosure pushing 80w or so. No comparison to an aftermarket system. I dont know of anyone who has blown one yet, but you can try downloading some test tones, I think something around 100Hz should activate it.

 

Mine is really not bad at all. It does not live up to the previous subwoofer tubes and amp setups I have had as aftermarket adds but when I crank it the back window is jumping and there is a decent thump to it.

 

Same here, mine moves the mirrors and I can feel it in the gas pedal..... Not aftermarket, but not bad at all.

 

I messed with the fade and turned up he bass and now it don't sound to bad

 

I pulled mine out and installed a Kicker shallow mount in the box with some polyfill. I added a 200 watt kicker amp to power just the sub and now my system sounds spectacular to me. The stock amp powers the infintys in the doors.

 

i was just wondering if anyone has changed the stock speaker.it doesnt sound bad but when your used to having 4 12in woofers in your car its not the same. i dont want to put a box back there because the trunk is small enough already

 

Yes, I have changed mine out. I put in a Kenwood KFC-XW800F 8" Shallow-Mount Car Subwoofer. I sounds really nice. I also have it amped. It fits in the sub box, but I had to cut out the sub grille that was there and put a different one over it. I will take a pic and post it on here later.

 

how did you go about the amp did you have to run new power ground ect

 

When you get an amp, you need to mount it and do the wiring. Pos and neg from the battery (pos should have a fuse on it), signal wires from the head unit, an amp turn on wire from the fuse panel, and wires to the sub.
I mounted mine in the cargo tray above the spare tire. If you use a smaller amp, its possible to mount it underneath beside the battery.
I think a possibilty for me when I get rid of the huge sub box is to mount an 8" or 10" in the stock location, using either a factory box, or maybe make a custom box to fit in there.