DFA series of powered, ported subwoofer enclosures are your all-in-one solution. They have been designed to combine the amplifier, subwoofer, and enclosure all into one fantastic product. This makes installation neater and easier as well as produces a great sound. This Brand New MA Audio Amplified subwoofer enclosure is designed for use in the cabin or under seats and can be re-positioned with the subwoofer firing towards the rear, front or upwards for optimal bass tuning. A totally unique design that maximises bass output without taking up much space! DFA Series Bass Enclosure with AMP. Computer Engineered & Precision Tuned Enclosure. Fiber Wood Box Material. Heavy Duty Industrial Aviation Carpet. Mitre Joint Box Construction. Specifically designed heavy duty subwoofer. Heavy gauge Steel Metal Basket. Single 4 ohm 4 Layer ASV Voice Coil. Paper Cone with Rubber Surround. Progressive Rolled Nomex Spiders. Polypropylene Injection Moulded Dust Cap. Class AB Mono block Amp. Aluminium Heat Sink Cooling System. Adjustable Gain Input Sensitivity. Thermal Short Overload Protection Circuitry. Power Protection L. 47cm x30cm x 15cm.