Hi, i have a Alpine iDA-X305S, 2 Kicker DS60's, 2 Alpine SPS 4'', Kenwood KAC-9105D 900RMS Amp, + a soon to come Dual Kicker CVR 12'' Ported Subwoofer. Once it gets delivered i wont have to upgrade any of my electrical equipment? Im not in need of a capacitor as they are no use. Im just wondering if i will need to upgrade my alternator or anything once my sub arrives. Will it draw that much more power? Thankyou 