subwoofer

I recently got a set of kicker CSS68 and CSC68 speakers to replace my crappy Bose door speakers in my 09 Mazdaspeed3 GT, plus some Pioneer TS-G520s for under the front seats. Along with those, I picked up a Kicker 46HS10 Hideaway Subwoofer with a 180-watt amp built in for the trunk. It comes...