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Ideas for a stereo on a pontoon

P
Jan 15, 2005
690
29
28
ND
The pontoon already has a 4 speaker system installed, but I want to add an amp and subs. It is running a honda 40 4 stroke and from what I can gather the alternator only generates about 10 amps. I am guessing the little alternator would fry if a large amp was hooked up.

My only thought is to add a seperate battery to just run the amp and charge frequently???? Any other alternatives???
 
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