venom93corba
09-23-2009, 05:13 AM
2k9 21v. I've got 2 towers speakers. What I'd like to do is take those off and add the Gravity Games light bar and 4 speakers. My question is do I need to add a second battery. All the Gravity Game boat have the second battery. Also do I need to upgrade the 2 amps from a 2 channel to 4 channel?