Legacy Pro Audio Double Helix Subwoofer

$6,500.00

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.

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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

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