d&b audiotechnik Qi7, Руководство пользователя

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Connections
1+
1-
2+
2-
1+
1-
2+
2-
passive
crossover
Fig. 2: Connector wiring
The Qi7 cabinet is fitted with a pair of NL4 connectors. All pins of both
connectors are wired in parallel. The Qi7 uses 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 the 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 Q7.
Within the D12 amplifier this is available in "Dual Channel" and "Mix
TOP/SUB" mode.
Up to a total of two Qi7 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 Qi7 low frequency level is reduced. The Qi7 is now
configured for use with d&b active subwoofers.
HFA circuit
-5
0
5
10
-10
-15
-20
-25
-30
20 100 1k 10k
20k
Fig. 3: Frequency response correction of
HFA circuit
In HFA mode (High Frequency Attenuation), the HF response of the Qi7
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.
Qi7 Manual (1.2 EN) Page 5 of 10