wen do i...

[spacegear 10+ year member]

wen do i have to changed my stock alt to a high output alternator? my stock alt pushes 110 amps and already has 2 batteries Factory. car --> mitsubishi spacegear.

my amp puts up 1200 watts max.

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[basschase 10+ year member]

if your amp puts out 1200 max as you say ... its probably only putting out around 600 watts rms and you should be fine with that , you SHOULDNT need to upgrade with only 600 watts rms

 

[Johnny Drama 5,000+ posts]

You will be fine. I wouldnt upgrade unless you start to notice voltage problems. Even then I would start with a wire upgrade.