NL4 connection with cover plate
The two NL4 connector sockets of the cabinet's connector panel
are located in a recess to allow the use of the cover plate
[1]
together with NL4 cable connectors, as shown in the graphic
opposite.
Note: Neutrik NL4FC type connectors must be used for this
option.
The cover plate is equipped with two knockout openings to allow
daisy chaining of the loudspeaker.
To use the NL4 connection, proceed in the same manner as
described in the previous section .
2.3. Operation
NOTICE!
Only operate d&b loudspeakers with a correctly configured d&b
amplifier, otherwise there is a risk of damaging the loudspeaker
components.
Application
Setup
Cabinets per
channel
Bi6-SUB
B6-SUB
2
Within applicable amplifiers, the controller setup is available in
Dual Channel or Mix TOP/SUB mode.
2.3.1. Controller settings
For acoustic adjustment the 100 Hz and CSA function can be
selected.
100 Hz circuit
If the 100 Hz circuit is selected, the upper operating frequency of
the system is reduced from 140 Hz to 110 Hz.
It can be used when actively driven Bi6-SUB subwoofers are used
to supplement TOP cabinets operated in full range mode, for
example in a distributed sound system. The 100 Hz mode can also
be used to compensate for the effect of close coupling between the
Bi6-SUB and TOP cabinets operated in CUT mode.
CSA circuit
The CSA (
Cardioid Subwoofer Array) mode enables the
combination of three or multiples of three subwoofer cabinets into
an array which produces exceptional low frequency directivity
control.
The amplifier channel for the center subwoofer of the array, which
is physically pointed to the rear, has CSA selected. The forward
facing cabinets are driven with an amplifier channel set in the
standard mode. The resulting cardioid behavior of the array will
significantly reduce the energy radiated to the rear.
NL4 cable connection with cover plate [1]
CSA Stack (example)
d&b Bi6-SUB Manual 1.1 en
7
