The P300-10 powered subwoofer is an ""all-in-one"" solution when adding bass to a factory system or just to save space, This model features a 10"" subwoofer in a sealed enclosure powered by an internal 300 watt amplifier, ""Closed-loop"" design ensures optimum performance between woofer, amplifier and enclosure, Built-in 0/180 phase switch, Separate low level and speaker level inputs, Built-in adjustable bass boost EQ, Adjustable 12db/Octave low pass crossover, Detachable Power/Ground connector, Intelligent auto turn on/off function, Thermal and over voltage protection, High-efficiency, low current design, Remote bass level control included, Proprietary high output woofer, Constructed with 5/8"" MDF, Large AWG input terminals, Covered with industrial heat activated vinyl, SKU: TBALL10046