B4 subwoofer

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.

  • Subwoofers
  • Finance-Series
  • Comparison list (0)
  • Add to comparison list

Accessories

Accessories

Amplifiers

Amplifiers


The d&b audiotechnik loudspeaker range is designed exclusively for operation with d&b amplifiers. These provide power as well as comprehensive control and protection functions tailored to achieve the performance, reliability and longevity associated with the d&b System approach. The d&b D20 and 30D amplifiers are recommended to drive the B4-SUB. The d&b D80, 10D and D6 amplifiers can also be used with the appropriate loudspeaker configuration selected.

Data

Data

System data  
Frequency response (–5 dB standard) 40 - 150 Hz
Frequency response (-5 dB 100 Hz mode) 40 - 100 Hz
Max. sound pressure (1m, free field)1
with D6/10D
with D20/30D
with D80
128 dB
131 dB
131 dB
Cabinets per amplifier channel 2
Loudspeaker data  
Configuration Cardioid subwoofer
Nominal impedance 6 Ω
Power handling capacity (RMS/peak 10 ms) 500/2000 W
Components 15" / 12" driver
Connections 2 x NLT4 F/M
optional 2 x EP5 or 2 x NL4
Dimensions, weight  
Dimensions (H x W x D) 476 x 580 x 7003 / 800 mm
18.7 x 22.8 x 27.73 / 31.6"
Weight 44 kg
97 lb

Application information is presented for guidance only. d&b reserves the right to make any necessary changes to the products and the published specifications. As part of the ongoing development program d&b tries to maintain the highest degree of product compatibility.

Documentation

Documentation

Title Language Date Size
B4-SUB Manual 1.2 English 14.02.2017 688 KB
E-Series cables and adapters International 30.01.2014 704 KB
EU Declaration of Conformity (CE) International 04.10.2016 51 KB
The E-Series brochure English 09.12.2016 5 MB
The T-Series brochure English 19.05.2017 6 MB

Downloads