LD Systems DDQSUB18

18" active PA Subwoofer with DSP

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LD Systems DDQSUB18

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Products Features:
The LD Systems DDQ Sub 18 is a powerful active subwoofer with digital
signal processing for demanding PA applications. It is precisely adapted
for combination with the full-range speakers of the DDQ Series and is
equally suitable for use with tops made by other manufacturers.

The compact bass-reflex design is loaded with an 18" FaitalPRO bass
speaker that has a 4" voice coil and a neodymium magnet driven by two
700-watt Hypex Class D power amplifier modules with a highly efficient
switching power supply with a total output of 1400 watts RMS. The DDQ Sub
18 attains a maximum sound-level pressure of 134 dB with a frequency
response curve of 30 -120 Hz.

The Sharc DSP programmed especially for the DDQ subwoofers ensures
distortion-free and reliable operation even at maximum volume levels
with a 1ms look ahead limiter, frequency and phase correction, as well
as all protection circuits, and has a large dynamic range of 127dB/113 dB
(ADC/DAC). Seven DSP Presets permit selectable crossover frequencies
between 80 and 120Hz. Eight additional presets make it possible to
realize cardioid configurations of 2 or 3 subwoofers, whereby it is possible
to attain rear attenuation of up to 20dB. In addition to XLR inputs and outputs,
the DDQ Sub 18 has a separate mono output with a 100Hz high-pass filter.
Additional features are LED function indicators and a ground lift switch;
the volume and preset controls can be deactivated to prevent inadvertent

The cabinet of the DDQ Sub 18 is made of 18mm thick multiplex with an
extremely durable polyurethane finish. It is equipped with two M20 threaded
flanges and ergonomic handles and is prepared for mounting of casters.

  • - LD Systems DDQ SUB18 : 18" active PA Subwoofer with DSP

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