d&b Audiotechnik B4 SUB Subwoofer Pasif 15 Inch 6 Ohm 2000 Watt
d&b Audiotechnik B4 SUB Subwoofer Pasif 15 Inch 6 Ohm 2000 Watt - Image 2

d&b Audiotechnik B4 SUB Subwoofer Pasif 15 Inch 6 Ohm 2000 Watt

Cardioid subwoofer

  • Components 15″/12″
  • Dispersion Cardioid
  • SPLmax 131 dB
  • Weight 44 kg / 97 lb

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Description

The B4-SUB is an actively driven cardioid subwoofer powered by a single amplifier channel. It houses two long excursion neodymium drivers in an integrated cardioid setup: a 15″ driver in a bass-reflex design facing to the front and a 12″ driver in a two chamber bandpass design radiating to the rear. The cardioid dispersion pattern resulting from this approach avoids unwanted energy behind the system that greatly reduces the reverberant field at low frequencies and provides the greatest accuracy of low frequency reproduction. The B4 subwoofer can only be used in a ground stacked setup. The B4-SUB cabinet is constructed from marine plywood, has an impact and weather resistant paint finish and a pair of handles. An M20 threaded flange in the top panel accepts the d&b Loudspeaker stand winder M20. The loudspeaker cabinet is also available in Special Colour (SC) options.

Amplifiers

The following amplifiers can be used to drive the B4-SUB.

System data

  • Frequency response (-5 dB standard)40 – 150 Hz
  • Frequency response (-5 dB 100 Hz mode)40 – 100 Hz
  • Max. sound pressure1
  • with 10D  128 dB
  • with D20/30D 131 dB
  • with D40/D80/40D 131 dB
  • Cabinets per amplifier channel 2

 

Loudspeaker data

  • Configuration Cardioid subwoofer
  • Nominal impedance6 Ω
  • Power handling capacity (RMS/peak 10 ms) 500/2000 W
  • Components 15″ / 12″ driver
  • Connections 2 x NLT4 F/M optional 2 x NL4

 

Dimensions / weight

  • Dimensions (H x W x D)
    • 476 x 580 x 7002 / 800 mm
    • 18.7 x 22.8 x 27.73 / 31.6″
  • Weight
    • 44 kg
    • 97 lb

 

1 1 m, free field, SPL max peak test signal: pink noise with crest factor 4, one speaker driven
2 dimensions without wheels

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