L-Acoustics ARCS User Manual

L-ACOUSTICS ARCS Manual V2.0 2/13/2003 7
1. THE ARCS SYSTEM
The ARCS system consists of: ARCS enclosures, SB118, SB218 or dV-SUB subwoofers, an approved
digital processor with OEM factory presets, ARCPLA front dollies, ARCSCOV protective cover,
ARCOUPL connecting bars, ARCSTRAP vertical linking elements for flying double row configurations,
BUMP3 and LIFTBAR rigging accessories. Please note that amplifier racks plus loudspeaker cables are
not specified but should meet the minimum specification requirements outlined in Section 2.
A block diagram of a typical ARCS FOH system is shown below in Figure 3. ARCS system components
are described in Section 1.1 and shown in Figure 4.
1.1 ARCS SYSTEM COMPONENTS
(1) ARCS
Active 2-way loudspeaker meeting Wavefront Sculpture Technology Criteria, containing one 15”
loudspeaker and a 1.4” exit (3” voice coil) high frequency compression driver mounted on a DOSC
waveguide, 22.5 degree horizontal by +40 / -20 degree (asymmetrical) vertical coverage.
(2) ARCPLA
Removable front dolly with castors
(3) ARCOUPL
Pair of coupling bars for physical attachment of adjacent ARCS enclosures (provided with shackles)
(4) BUMP3
Flying bumper for rigging an ARCS array. Weight is 3.8 kg (8.4 lbs). One BUMP3 is required to fly 2 or
4 cabinets. Two BUMP3 and one LIFTBAR are required to fly 1, 3, 4, 6 or 8 enclosures.
(5) ARCSTRAP
Vertical linking elements for flying double row ARCS configurations (ARCSTRAP is provided in pairs
for front and rear attachment).
(6) LIFTBAR
Rigging bar for use with 2 x BUMP3 (provided with 3 shackles)
(7) ARCBUMP
Rigging accessory for flying up to 4 ARCS in the horizontal orientation (provided with 6+6 safety
steels for attachment between all front and rear ARCOUPL shackles, two ARCOUPL, two shackles)
(8) ARCSCOV
Protective cover for ARCS enclosures
(9) F-CABLE (SP7, SP25)
Loudspeaker cable, 4 conductor, 4 mm
2
conductor cross-section, 7 m (20 ft) or 25 m (80 ft) length,
equipped with 2 x Speakon connectors
(10) F-LINK CABLE (SP.7)
Loudspeaker link cable, 4 conductor, 4 mm
2
conductor cross-section, 0.7 m (2 ft) length, equipped
with 2 x Speakon connectors (for paralleling ARCS enclosures)
SUBWOOFER ENCLOSURES
SB118
Dual-vented bandpass-loaded, single 18’’ subwoofer for high level, extended bandwidth
SB218
Front-loaded, bass-reflex design, dual 18’’ subwoofer for high level, extended bandwidth
dV-SUB
Dual-vented bandpass-loaded triple 15” subwoofer for high level, low frequency extension
For more information concerning SB118 and SB218 subwoofer enclosures please consult the SB Subwoofer
User’s Manual

L-Acoustics ARCS Specifications

General

Brand	L-Acoustics
Model	ARCS
Category	Speakers
Language	English