Connections
1+
1-
2+
2-
1+
1-
2+
2-
passive
crossover
Fig. 2: Connector wiring
Since November 2004 the Ci45/Ci60/Ci90 cabinets are fitted with two
NL4 connectors. All pins of both connectors are wired in parallel using
the pin assignments 1+/1–. Using one connector as the input, the
second
connector
allows
for
direct
connection
to
additional
loudspeakers.
Installation loudspeakers with the weather resistant option are supplied
with a fixed cable (PG).
Cable type:
H-07-RN-F 2 x 2.5 mm2/AWG 13
Standard length: 5.5 m (18 ft)
Pin equivalents of NL4 connectors and fixed cable option (PG) are listed
in the table below.
NL4
1+
1–
2+
2–
PG
Brown (+)
Blue (–)
Operation with D6 or D12
Select the controller setup Ci45, Ci60 or Ci90.
Within the D12 amplifier these are available in "Dual Channel" and
"Mix TOP/SUB" mode.
Up to a total of two Ci45/Ci60/Ci90 loudspeakers can be driven by
each D6 or D12 amplifier channel.
In applications with low continuous levels and low ambient temperatures
up to three cabinets can be connected to a D12 channel.
Controller settings
For acoustic adjustment the functions CUT, HFA and CPL can be
selected.
CUT circuit
Set to CUT, the Ci45/Ci60/Ci90 low frequency level is reduced. The
loudspeaker is now configured for use with the Ci-SUB, Q-SUB or d&b
C-Series subwoofers.
HFA circuit
-5
0
5
10
-10
-15
-20
-25
-30
20
100
1k
10k
20k
Fig. 3: Frequency response correction with
HFA setting
In HFA mode (High Frequency Attenuation), the HF response of the
system is rolled off. The HFA circuit provides a natural, balanced
frequency response when a unit is placed close to listeners in near field
or delay use.
High frequency attenuation begins gradually at 1 kHz, dropping by
approximately 3 dB at 10 kHz. This roll-off mimics the decline in
frequency response experienced when listening to a system from a
distance in a typically reverberant room or auditorium.
Ci45/Ci60/Ci90 Manual
(9.2 EN)
Page 5 of 10
