inputs.text: challenger thumping - best bang buck opinion powers 4 factory jensen speakers aftermarket 10 mtx tm1004 marine subwoofer thanks amp bass pounds pretty hard even 45 mph makes factory speakers sound better well not fan jensen products replacing 4 speakers road money think would hard beat no distortion funny noises etc good power installed sea doo dealer put dual air vents storage box havent heat shut issues live boat hot florida sun