Need help setting up/choosing amp.

[R055]

Hey, I'm buying a wakeboard tower this fall and I'll be putting on speakers onto the tower. I currently have a head unit and 2 speakers inside the boat with no amp.
My speakers inside the boat are currently underpowered because they're rated for 50rms/100max watts. And my head unit only puts out 22rms per channel. I also would like 2 speakers on the tower at about 250rms each.
Ive looked at amps and they all seem to have equal watts per channel. Are there any that have 2 around 50rms and 2 around 250? Or are there any that have adjustable watts per channel? Or do I have to buy multiple amps?

Thanks, Ross

 

[Scott Danforth]

you may need to buy multiple amps, however that whole fader control thing on the stereo usually covers it

start planning where the extra batteries will be on the boat as well.

 

[R055]

you may need to buy multiple amps, however that whole fader control thing on the stereo usually covers it

start planning where the extra batteries will be on the boat as well.

So I would need 1 sub for the lower watt speakers and a second sub for the tower speakers?

For the second battery would it be okay if its in the middle of the boat?(In the compartment where all the stereo and sterring wheel and all the switch wiring are) I would have to run about 15-20 feet of wire to reach my main battery if I did that.