I recently purchased a 2008 LSV and am wondering what the model nbrs/specs etc of the Kicker tower speakers that came from the factory. Right now I have 2 amps, a ZX200.4 that powers the 6 cabin speakers (KM620s?), and a ZX250.2 that powers the 4 tower speakers. The previos owner added 2 tower speakers to the original setup after he blew the 2 that came with the boat. I am by no means an audio expert but want to possibly add a sub to the system without spending a bunch of money... Thanks in advance for your help!