This premium passive enclosure with twin subwoofers is constructed from robust birch ply with a durable hard-wearing finish and feature CNC machined pocket handles and a 35mm top hat for satellite mounting. This Zenith series enclosure also features a die-cast aluminium chassis for increased rigidity helping deliver greater sonic accuracy. Please note: Shipping charges may apply Continuous power (RMS): 1200W Peak power: 4800W Maximum calculated SPL: 137dB Sensitivity (1W/1m): 99dB Frequency range (-10dB): 32Hz - 200Hz Frequency range (-3dB): 40Hz - 200Hz LF transducer: 2 x 18" Nominal impedance: 4Ω Connections: 2 x speakON connectors Mounting options: 35mm top hat for satellite mounting and multiple 10mm rigging points Other features: Two wheel board catch plates rear mounted castor fixing points and recessed speakON connector plate