ARCSWIFO_UM_EN_4.0
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ARCS
®
WIDE / FOCUS SYSTEM
The ARCS
®
WIDE and ARCS
®
FOCUS systems are based on two constant curvature enclosures ensuring distinct
directivity pattern and SPL capabilities. Intended for medium-throw applications in rental productions and fixed
installations, these line sources deliver remarkable acoustic properties and unmatched versatility for applications including
FOH L/R systems, central clusters, side-fill monitors, distributed systems and complementary fills.
The main systems components consist of the following:
•
ARCS
®
WIDE (H x V: 30° x 90°) element, wide coverage, operating from 55 Hz to 20 kHz;
•
ARCS
®
FOCUS (H x V: 15° x 90°) element, focused energy, operating from 55 Hz to 20 kHz;
•
SB18m low frequency extension, operating down to 32 Hz;
•
LA4, LA4X or LA8 amplified controllers.
The ARCS
®
WIDE or ARCS
®
FOCUS line sources provide high SPL with perfect acoustic coupling, a solid LF performance
and constant tonal balance over distance. Both systems can be deployed either as a horizontal array or as a vertical array.
In the coupling plane, the ARCS
®
WIDE and ARCS
®
FOCUS yield a razor-sharp directivity pattern, particularly valuable
to sector audience fields while avoiding reflective surfaces. In the other plane, both systems provide a 90° smooth
symmetric directivity pattern.
The ARCS
®
WIDE is suited to achieve an extensive coverage with few elements, offering a remarkably compact array
preserving sightlines. The total coverage angle of an ARCS
®
WIDE line source is proportional to the number N of
enclosures in the array, i.e. N x 30°.
The ARCS
®
FOCUS line source focuses the same acoustic energy within half of the coverage angle, i.e. N x 15°. The
ARCS
®
FOCUS is therefore suited to achieve a narrower coverage, offering a higher SPL with a more extended throw
than its sibling.
The ARCS
®
WIDE and ARCS
®
FOCUS can also be deployed in “WIFO” hybrid arrays for complex audience geometries.
The dual directivity pattern and the various system configurations offered to the sound designer and system engineer
allow a high level of creative freedom. Before installation, all these configurations can be acoustically and mechanically
modeled with the SOUNDVISION 3D simulation software.
The amplified controllers offer an advanced and precise drive system for the ARCS
®
WIDE and ARCS
®
FOCUS
enclosures. Both can be driven with the same preset. All L-ACOUSTICS amplified controllers feature the L-DRIVE, a
thermal and over-excursion protection circuit.
Up to 253 LA8 amplified controllers can be connected together via the Ethernet-based L-NET protocol. The LA
NETWORK MANAGER software allows online remote control and monitoring of all the connected units, via a user-
friendly and intuitive graphic interface, and features the Array Morphing EQ. This exclusive tool allows the engineer to
quickly adjust the tonal balance of the system to reach a reference curve or to ensure consistency of the sonic signature.
