Operation with D12
Select the controller setup B2-SUB.
This is available in "Dual Channel" and "Mix TOP/SUB" mode and
enables a single B2-SUB cabinet to be driven by the respective channel.
Controller settings
In standard mode the B2-SUB can be used as subwoofer for the d&b C-
and Q-Series systems (CUT mode). The upper cut-off frequency of
100 Hz (like Q-SUB) is lower than the cut-off frequency of an A1
mainframe with B2 Controller, which was tuned for the use with the d&b
F2 system.
INFRA
Selecting the INFRA switch restricts the B2 frequency response to a
narrow, 32 Hz – 68 Hz range (–5 dB). This transforms a B2 into an
infrabass system for use with d&b C- and Q-Series loudspeakers.
CSA
Fig. 3: CSA Stack (Example)
CSA (Cardioid Subwoofer Array) is a method to combine three or
multiples of three subwoofer cabinets to form an array with exceptional
directivity at low frequencies.
A B2-SUB cabinet driven in CSA mode eliminates the energy radiated
to the rear of the two front radiating B2-SUB cabinets (CSA not
selected).
CSA decreases the low end diffuse sound field, significantly improving
the direct-to-diffuse energy ratio in the audience areas.
Please note that all other settings of the amplifiers driving a CSA have
to be identical (input signal, level, INFRA, EQ, delay). Do not use this
mode with any other configuration of B2-SUB systems.
Please refer to d&b TI 330 (d&b code D5330.E), which describes the
setup in detail. The TI can be downloaded from the d&b website at
www.dbaudio.com.
B2-SUB Manual (3.2 EN) Page 5 of 8
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