HK Audio PR:O 210 SUB D2, Active Bass Reflex Subwoofer, Speakers: 2x 10"", 600 W Class D power amplifier, Max. SPL (sound pressure level): 126 dB, Frequency response (+/-3 dB): 60 Hz - 150 Hz, Active selectable crossover: 75 Hz - 150 Hz, 2 XLR/jack input/output, 2 XLR thru, M20 thread for a pole mount, Dimensions (W x H x D): 370 x 620 x 530 mm, Weight: 27.2 kg