2 Questions?

1. Which bazooka tube would sound the best in for a boat set up. I have found some 400w 10" tubes. Would these put out some good bass?

2.Im gunna have 2 amps in my boat and Im going to run a big power wire to the front where my amps are the put a spliter in and run 2 wires to both amps. Ok my question is if I want to put a capacitor in do I have to put 2 in on both wires going to both amps or can I put one big one in on the main wire before it splits??

yea you just put it in before it splits.Make sure you do that charge thing to the cap. unless you like sparks. and the tube will sound good while your siting but you will hardly hear it when pulling. going off my friends boat its a 400w 10 also