I have a Alpine head unit, Boston Acoustics 6.5 (F) and Pioneer (6.5) (R). It sounds clear and load, but the bass is lacking. My head unit has sub input, and I'm wondering what's the best subwoofer to get for the GSR hatchback.. I don't want to spend more then 350..No amp.

Thanks

 

you can get an amplified bazooka bass tube or an infinity basslink. sounddomain.com carries both, but you might want to check out ebay as well.