Here is a photo of the finished cockpit stereo speaker installation.

The speakers aren’t behind deckplates as I originally planned. However, the space they are installed in does not let water into the boat’s bilge as it drains into the rudder quadrant locker. This space doesn’t really present any danger of flooding the boat if the speakers should be punched out when the cockpit gets pooped—as it drains overboard.
In this photo you can also see the cockpit-mounted waterproof remote for the stereo system, which is mounted on the corner of the starboard cockpit seat face. This remote allows you to change the source—CD, iPod, Aux or radio; change the radio station or CD disc and track; and control the volume without having to go in the cabin.
Nice.. I just replaced the speakers in my cockpit and am not really happy. if they got hit with enough water to punch them out i would have two 6 inch holes into the boats interior. The first owner of the boat cut the holes there.
I will say this though. Other than taking 10 tons of water into the cockpit all at once im not woried about water through there. The old speakers cones were gone and air could just flow through the speakers into the interior and It never let water in even in the worst storms etc.. Also my cockpit could fill up and still drain out the transom in about 20 seconds or less. I have a 18inch to 14 inch wide opening through the back of the transom that the outboard mounts in.. its not a matter of how fast water drains but about keeping any loose gear from leaving with the water