I'm looking to add some tunes to my fishing boat. I need to find a pair of speakers that can stand up to the sal****er environment and be sprayed off with a hose at the end of the day. The Atrium 45's and 55's look decent on paper but I'm wondering about the sensitivity. I only plan on running a receiver without any other amplification so they need to be able to play fairly loud on their own. One other requirement is they must be bracket mountable. Any ideas?