d&b audiotechnik Q7, Руководство пользователя

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Operation
NOTICE!
Only operate d&b loudspeakers with a correctly configured d&b
amplifier, otherwise there is a risk of damaging the loudspeaker
components.
Applicable d&b amplifiers:
D80/D20/D12/D6/10D/30D.
Application Setup Cabinets per channel
Q7 Q7 2
For applicable d&b amplifiers the setups are available in Dual Channel
or Mix TOP/SUB mode.
Controller settings
For acoustic adjustment the functions CUT, HFA and CPL can be
selected.
CUT circuit
Set to CUT, the Q7 low frequency level is reduced. The Q7 is now
configured for use with the 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 of
HFA circuit
In HFA mode (High Frequency Attenuation), the HF response of the Q7
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.
CPL circuit
Fig. 4: Frequency response correction of
CPL circuit
The CPL (Coupling) circuit compensates for coupling effects between the
cabinets when building closely coupled arrays. CPL begins gradually at
1 kHz, with maximum attenuation below 400 Hz, providing a balanced
frequency response when Q7 cabinets are used in arrays of two or
more. The function of the CPL circuit is shown in the diagram opposite
and can be set in dB attenuation values between –9 and 0, or a
positive CPL value which creates an adjustable low frequency boost
around 65 Hz (0 to +5 dB).
Q7 Manual (2.5 EN) Page 5 of 10