DAS Audio Altea-718 - passive 18"" bass reflex subwoofer, frequency range: 45 Hz - 138 kHz, max. SPL: 134 dB, rated power: 600 W/ 2400 W RMS/Peak, impedance: 8 Ohm, connections: Speaker Twist, 35 mm speaker flange, dimensions (HxWxD): 720 x 545 x 650 mm, weight: 40.5 kg, color: black