Thanks for the info. The brackets should work well. I will be looking into automotive audio that can be mounted in the trailer with plenty of watts to push the speakers. All the RV manufacturers offer built in units but I haven't seen or heard any that impress me much. So I'm on a mission to find a good unit to install in a trailer. Any tips or ideas are always appreciated. It will be interesting to hear how the M22s perform outdoors.
Hmmm,Guess I better go look at trailers too.