Right now I have a Sony head unit with two Sony speakers $100 for the pair I'm guessing 50 rms at most with iPod 16 pin connection and still not enough when I'm parked at the sandbar. Now I have been looking into this set up JL AUDIO M650-CCX-CG-WH 6.5" with JL Audio M200/2 to drive them. Would this cut it so you can have a great sound at a good volume level and would I need to run two batteries or just get a volt meter to keep an eye on it? Thanks