^ i doubt it is also but imma clamp it to see what im really getting and the site says 4ga the manual says 2 ga at least but it took knu concepts 1/0 without any real problems and i deff agree on rf and kicker amps being better but i upgrades my l7s 15s to this one 18 and both being custom boxes from same shop the 18 really out performs... but as far as the one amp per coil??? good/bad idea