B22 subwoofer

The B22-SUB is a high performance subwoofer designed for ground stacked applications, housing two long excursion 18” drivers built into a bandpass horn cabinet design. With high Sound Pressure Levels and an extended frequency response, the B22-SUB is ideal for any large format sound reinforcement application. When operated in INFRA mode, the B22-SUB can be used to complement other d&b subwoofers by extending the frequency response of the system. When three or any multiple of three B22 subwoofers are used, they can be positioned in a Cardioid Subwoofer Array, achieving impressive directivity control at lower frequencies and significantly reducing the energy radiating towards to the rear.

The cabinet is constructed from marine plywood, and has an impact resistant paint finish. The front of the loudspeaker cabinet is protected by a rigid metal grill backed by an acoustically transparent foam. The side panels of the B22-SUB both incorporate four handles, whilst four wheels are mounted to the rear. The enclosure features two runners to protect the bottom panel from scratching. Two correspondingly shaped recesses are incorporated into the top panel of each B22-SUB cabinet to accept these runners, preventing cabinet movement when stacked.

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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 D80 amplifier is recommended to drive the B22-SUB. The d&b D20 and 30D amplifiers can also be used with the appropriate loudspeaker configuration selected.

Data

Data

System data  
Frequency response (–5 dB standard) 37 Hz - 90 Hz
Frequency response (–5 dB INFRA mode) 32 Hz - 68 Hz
Max. sound pressure (1m, free field)1
with D20/30D
with D80
140 dB
143 dB
Cabinets per channel D20/D80/30D 1
Loudspeaker data  
Configuration High performance subwoofer intended for ground stacked applications
Nominal impedance 4 Ω
Power handling capacity (RMS/peak 10 ms) 1000/4000 W
Components 2 x 18" driver with neodymium magnet
Connections 2 x NLT4 F/M
optional 2 x EP5
Dimensions, weight  
Dimensions (H x W x D) 585 x 1160 x 920 / 1046 mm
23 x 45.7 x 36.2 / 41.2”
Weight 106 kg (234 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
B22-SUB Datasheet 1.1 English 14.01.2016 436 KB
B22-SUB Manual 1.2 English 09.02.2017 801 KB
EU Declaration of Conformity (CE) International 04.10.2016 51 KB

Architectural specifications

Architectural specifications

The loudspeaker shall be an actively driven subwoofer housing a pair of 18" long excursion neodymium LF drivers built into a bandpass horn cabinet.
The loudspeaker shall only be operated by a dedicated, compatible controller amplifier.

The cabinet enclosure shall be made from marine plywood with an impact resistant paint finish.
The driver shall be protected by a rigid metal grill backed by an acoustically transparent foam. The cabinet shall incorporate four handles in each side panel and four 100 mm heavy duty transport wheels at the cabinet's rear.
Two runners shall be incorporated in the bottom panel and two corresponding recesses shall be incorporated in the top panel to prevent movement of stacked cabinets.

The connection panel on the back shall be recessed and fitted with speakon NLT4 F/M sockets (EP5 connectors as an option).

The power handling capacity shall be 1000 W RMS and 4000 W peak (10 ms). The frequency response (–5 dB) measured on axis shall be 32 Hz to 90 Hz with a maximum sound pressure of at least 143 dB.

The dimensions (WxHxD) shall not exceed 1160 x 585 x 1046 mm (45.7" x 23" x 41.2") and shall weigh no more than 106 kg (234 lb).

The loudspeaker shall be the B22-SUB by d&b audiotechnik GmbH.