d&b audiotechnik 24S, Руководство пользователя

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NL4 connection with cover plate
The NL4 connector socket of the cabinet's connector panel is
located in a recess to allow the use of the cover plate
[1] together
with an NL4 cable connector, as shown in the graphic opposite.
Note: Neutrik NL4FC type connectors must be used for this
option.
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.
Applicable d&b amplifiers:
30D/D20/D80.
Application Setup Cabinets per
channel
24S 24S 1
24S-D 24S-D 1
For applicable d&b amplifiers, the controller setups are available
in Dual Channel and/or Mix TOP/SUB mode.
2.3.1. Controller settings
For acoustic adjustment the functions CUT, HFA and CPL can be
selected.
CUT mode
Set to CUT, the low frequency level is reduced. The cabinets are
now configured for use with actively driven d&b subwoofers.
HFA mode
In HFA mode (High Frequency Attenuation), the HF response of the
system is rolled off. HFA provides a natural, balanced frequency
response when a cabinet 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.
NL4 cable connection with cover plate [1]
-5
0
5
10
-10
-15
-20
-25
-30
20 100 1k 10k 20k
Frequency response correction in HFA mode
d&b 24S/24S-D Manual 1.1 en 7