Legacy Pro Audio Double Helix Subwoofer

The Double Helix Subwoofer provides extreme low end extension for this high performance system.  The subwoofer cells are modular and can be stacked beneath the Double Helix mains. The Double Helix Subwoofer utilizes the XP-40480 processor- a 40bit DSP to provide the crossover to the main front speakers. The crossover utilizes 24dB/octave Linkwitz Riley networks and provides for time delay adjustment and room equalization via graphic and parametric EQ on the inputs and and parametric EO on the outputs. Limiters are also available as required. The configuration matrix is available here. Related Articles Legacy Speakers on TV: The X Factor with Judge L.A. Reid Applications: Very low frequency reinforcement System Type: Powered dual woofer, slot loaded dual sub-bass radiator with mass loading Mounting : Stage or ground stacked System Directivity: Omni Projection Distance: 3500 cubic ft and greater Subwoofer: Dual 15" Silver/Graphite/Rohacell with 35 lb magnetic structure Low Frequency Alignment: Dual mass loaded passive radiator Freq. Response (Hz, +/-3dB): 20 -150 Hz variable Sensitivity (Room, dB@ 2.83V): 1.2 volts to rated output Crossover Freq. (Hz): 40-125 Hz or set by DSP Inputs: 1 XLR, 3 unbalanced, 2 high level Internal Amplification: (2) channels 500 watt ICEpower® amplification Peak Output Current: 35 A per channel Idle Noise: 80 microvolts Output per channel: 500W @ 0.05% THD+N (1kHz, 4Ω) Amplifier Efficiency: 83% (250W, 8Ω) Protection Schemes: Under-voltage, thermal, over-current, high frequency Idle Power: 3 watts/per module x 2 Start-up: Soft start, mute/de-mute Dimensions (inches) HxWxD: 18 x 36 x 24 Weight: 125 lbs each