10 subwoofer with 2 Kapton(R) voice coil; Heavy-duty MDF construction with reinforced corners & handles for easy portability; 4 x 10 super-horn midrange/tweeter with 1 titanium compression driver; Ported enclosure for added bass response; Dual speakON(R) & dual 1/4 jacks; Binding post terminals; Built-in crossover; 35mm speaker stand mount; Power handling: 250W RMS/500W max; Freq resp: 40Hz-20kHz; Sensitivity: 97dB @ 1W/1m; Imp: 8ohm ; Dim: 15.25H x 20W x 12.75D; Weight: 28lbs; Each;