L-ACOUSTICS ARCS FOCUS [7/12] Operating modes operating modes operating modes operating modes

L-ACOUSTICS ARCS FOCUS [7/12] Operating modes operating modes operating modes operating modes
ARCSWIFO_UM_EN_1-0
w w w . l - a c o u s t i c s . c o m
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3 OPERATING MODES
OPERATING MODESOPERATING MODES
OPERATING MODES
3.1 FULL-RANGE mode
In FULL-RANGE mode, the ARCS
®
WIDE/FOCUS SYSTEM operates within the nominal bandwidth of the enclosure.
It corresponds to the use of ARCS
®
WIDE/FOCUS enclosure(s) in standalone configuration, i.e. without complementary
subwoofers.
The ARCS
®
WIDE/FOCUS enclosure is driven by the LA4 or the LA8 amplified controller with a choice of two presets.
Single ARCS
®
WIDE / ARCS
®
FOCUS
Standalone ARCS
®
WIDE / ARCS
®
FOCUS line source
Horizontal
Vertical
Enclosure
[PRESET]
WIDE/FOCUS
[
ARCS_
WIFO
Enclosure
[PRESET]
WIDE/FOCUS
[
ARCS_
WIFO_FI
Frequency range (-10dB)
55Hz – 20kHz
Frequency range (-10dB)
55Hz – 20kHz
3.2 LOW-EXTENSION mode
In LOW-EXTENSION mode, the bandwidth of the ARCS
®
WIDE/FOCUS SYSTEM is extended in the low end.
It corresponds to the use of ARCS
®
WIDE/FOCUS enclosure(s) in combination with the SB18m subwoofer.
Each enclosure type is driven by the LA4 or LA8 amplified controller with dedicated factory presets. The ARCS
®
WIDE/FOCUS enclosure is driven with the same presets as in the standalone configuration. The SB18m subwoofer is
driven with a preset featuring an upper frequency limit at 60 Hz, for an optimal acoustic coupling with the line source.
Single enclosure + SB18m
Line source + SB18m
Flown horizontal
with ground-
stacked SB18m
Mixed
array
Recommended ratio
1 WIDE/FOCUS : 1 SB18m
Frequency range (-10dB)
32Hz – 20kHz
Enclosure
WIDE/FOCUS
SB18m
[PRESET]
[ARCS_WIFO_FI]
[SB18_60]
Enclosure
WIDE/FOCUS
SB18m
[PRESET]
[ARCS_WIFO]
[SB18_60]
Delay settings
When combining a line source with subwoofers, delays may have to be added to the presets. Refer to the
LA8 PRESET LIBRARY user manual to obtain the pre-alignment delay values.
Use
[
SB
1
8
_
60
_C]
with a
n
SB
1
8
m
array
in
c
ardioid
configuration
The cardioid configuration consists in reversing 1 element in an array of 4 subwoofers.
Refer to the SB18 user manual for details about the CARDIOID mode.
Recommended ratio
1 WIDE/FOCUS : 1 SB18m
Frequency range (-10dB)
32Hz – 20kHz

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