I allready have a 5 farad cap and an optima deep cell battery along with my main battery, but I have a factory alternator that only puts out 100 amps. All of my audio equipment together requires 150 amps ( I got this number by adding all the fuses on the amps and sound processors). So im getting a 250 amp alternator next and see what happens from there. Im still concerned about this amazingly deep bass that is literally ground shaking but not much loudness.