Behringer DR18SUB, Active Subwoofer, 18" Subwoofer, Power: 800 W RMS / 2400 W peak, Inputs: 2 x XLR balanced, Outputs: 2 x XLR balanced, X-Over: 90 Hz / 120 Hz, Phase switch, Frequency range: 30 - 150 Hz, Max. SPL: 129 dB, M20 female thread for tripod mounting, Dimensions (H x W x D): 650 x 530 x 609 mm, Weight: 41 kg