Volume fluctuation While Driving

[SethPhillips 5,000+ posts]

im running 2 batt's and 2400w in my car off a 90 amp max stock alt....

check the asl.

other then that... check the voltage at the rca output's ( see if it fluxuates at all ). and the amp's grounds/ wireing.

 

[mikecart1 10+ year member]

When installing another battery, where does it go? Within the car or somewhere near it in the engine bay?

 

[SethPhillips 5,000+ posts]

When installing another battery, where does it go? Within the car or somewhere near it in the engine bay?

really anywhere you can fit it... most of the time in the trunk close to the amp(s)