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d&b audiotechnik Qi-SUB


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Product Overview

The Qi-SUB is the installation version of the Q-SUB and can be used to supplement Qi1, Qi7 and Qi10 cabinets in various combinations, either flown or ground stacked. It is acoustically compatible with the standard road version differing only in cabinet construction and mounting hardware. The Qi-SUB cabinet is an actively driven bass-reflex design housing a long excursion 18" driver, its frequency response extending from 40 Hz to 130 Hz.

The Qi-SUB can be driven either by the d&b D6 or D12 dual channel power amplifiers configured for the Q-SUB. More detailed information on specific loudspeaker setups with d&b amplifiers is available either in the relevant loudspeaker or amplifier manuals.



The Qi-SUB cabinet is constructed from marine plywood and has an impact resistant paint finish. The front of the loudspeaker cabinet is covered with a replaceable acoustically transparent foam that is then protected by a rigid metal grill. Four M10 threaded inserts on each side panel of the cabinet enclosure are provided for attaching installation hardware. Four rubber pads placed into their recessed positions prevent movement of the cabinets when two or more Qi-SUBs are stacked. The cabinet rear panel is fitted with two NL4 connectors wired in parallel. The loudspeaker cabinet is also available in Special Colour (SC) and Weather Resistant (WR) options.


  • System data
  • Frequency response (–5 dB standard)    40 Hz - 130 Hz
  • Frequency response (–5 dB 100 Hz mode)    40 Hz - 100 Hz
  • Max. sound pressure (single cabinet, 1 m, free field)     
  • with D6    129 dB
  • with D12    133 dB
  • Input level (100 dB-SPL/1 m)    —13 dBu
  • Loudspeaker data
  • Nominal impedance    8 ohms
  • Power handling capacity (RMS/peak 10 ms)    400/1600 W
  • Components    1 x NL4
  • Connections    2 x NL4
         optional fixed cable
  • Pin assignments    NL4: 2+/2–
         Fixed cable: Brown + / Blue –
  • Weight    37 kg (82 lb)

Product Downloads

  • Qi-SUB Q-Series Brochure PDF 6.0 MB
  • Qi-SUB User Manual v1.2 PDF 0.7 MB
  • Qi-SUB Q-Series Rigging Manual v1.2 PDF 4.4 MB


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*Prices are in AUD, include GST and are subject to change. Please call National Audio for pricing and availability on the Qi-SUB.