d&b 27S-SUB - Manual (Page 7)

Fig. 5: Installing the fixed cable connection
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 above in the section entitled Þ "Fixed cable connection"
on page 6.
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.
Operation with D6 or D12
Select the controller setup 27S-SUB for 27S or 27A subwoofers.
Within the D12 amplifier it is available in "Dual Channel" and "Mix
TOP/SUB" mode. For combinations with full range systems fed by
a single 4-wire cable "Mix TOP/SUB" mode must be selected.
Up to a total of two 27S-SUB or 27A-SUB loudspeakers can be
driven by each channel of the D6 or D12 amplifiers.
2.3.1. Controller settings
For acoustic adjustment the 100 Hz 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 100 Hz.
Fig. 6: NL4 cable connection with cover plate [1]
d&b 27S-SUB/27A-SUB Manual (1.2 EN) 7