i have a MTX T9515-44 15" single 4ohm 1000W RMS subwoofer. i do not yet have an amplifier, however once i get one i understand i will need an electrical system to handle it. my battery is 650ca. 12V i assume? will i need a second battery or capacitor or another device? if so what specific specs should i be looking for that could power a 1000w rms amp. also id love to hear recomendations for amps that would power my subwoofer for under 500 if you have any.