I have a Jensen marine stereo(with a face plug for the ipod) with two box speakers mounted port and starboard on the main cabin bulkhead, and two cockpit speakers mounted in the face of the cockpit seats, about two feet aft of the traveler. I added the cockpit speakers last year, and they are a HUGE improvement. The quarter berth acts like a giant resonating chamber and boosts the bass a lot. If we are cruising and eating dinner below (yes, I use the table!) I will set the balance more to the cockpit speakers-great sound, and the speakers on the cabin bulkhead don't deafen the people sitting next to them!