inputs.text: fx12w subs - subs amazing got thehem week ago two thehem sealed box 25 cubic feet air space reversed mounted polarity inverted running thehem power acoustic a2400db mono block amp sound clear tight respond pretty well box tehemp two running also a2400db amp running 4 fiberglass enclousure 1ohm every pair probably hitting 150db time done post another review babies 4 installed broken