audio help --- sub not hitting
 

Have full JL setup in 2004 X-star with stock Clarion head unit, stock Clarion amp for boat speakers, and a Sony 4/3 600W amp for the tower and sub. Tower speakers are great, so the amp isn't bad itself. The sub is getting only about 5% power and producing no sound even though everything is hooked up correctly. Bridged on rear channel, tower speakers all on front channel. Do we need to get a different amp? If so, what do we need to be looking for?