Re: Need help with stereo!
I mostly agree with the other posts. The speakers are the same (except with "pretty" white covers. The may have been sprayed with some "waterproofing" chemical, but you can buy some "3M" brand spray at Wally World and do the same thing.
As far as the radio, most quality marine radios circuit boards and electronics are sealed or coated with a silicon type material. Most car stereo electronics printed circuit board are also coated, but just not as thick and won't have the "silicon" on the other electrical parts.
On a budget, I would (and have) sacrificed that "pretty" marine white for some tunes. I would recommend covering the radio with something if the boat is stored uncovered outdoors.