The Lightning Audio single 12" loaded enclosure could possibly be the perfect subwoofer for your car, SUV or jeep. The ready-constructed enclosure has been optimized for low frequency impact with the use of a slot loaded vent, and the passive design means all you need is an amplifier that can produce maximum power into a 4-Ohm load. All you need is to pick up your date for tonight and you are ready to roll!Woofer Quantity 1Woofer Size 12"Woofer Series LA-S412Woofer Impedance 4-OhmsPower Handling 400 Watts MAXSystem Configuration 1.60 cu.ft. Vented 35Hz Tuning FrequencyEnclosure Material MDFSpeaker Connector Spring LoadedShipping Weight 44 Lbs. (20 Kg.)Dimensions W-19.8" x H1-15.6" x H2-14" x D1-13.5" x D2-16"