Is there a way to adjust the output on the stock subwoofer on a 04 tiberon with the Infinity system?

 

Negative my friend.

 

What would you like to do? If you're looking for more "kick", I've heard that if you reverse the polarity on the wires, it sounds a little stronger. I have the Tiburon Infinity sub (driven by a Tiburon JBL amp) in my Elantra; I tried swapping them and couldn't tell any difference.

 

I did the polarity reverse and it did improve.

Where is the amp mounted? Is it adjustable?

 

No adjustments on the amp whatsoever. It's mounted next to the rear seat on driver's side; you have to take out the leftrear quarter trim to get to it. It's held in by four bolts:



It looks like this: