L ACOUSTICS - ARC II - Constant curvature WST line source (New)

Constant Curvature WST® Line Source

• Optimized for medium-throw applications
• Adaptive and predictable directivity to suit many audience geometries
• FOH system, fills and distributed designs for touring or fixed installation
• Clarity, intelligibility, impact and precision for live music
• LA8 advanced system drive and protection
• Sonic compatibility orf preset library with other LA systems
• Plug and play package, quick set-up and easy stacking and flying

ARCS II - constant curvature WST® enclosure

ARCS® II features a bi-amplified design and advanced enclosure tuning with a custom DOSC® waveguide for remarkable clarity and coherence. When arrayed, ARCS® II radiates a constant curvature wavefront of 22.5° x the number of enclosures. Vertically, the enclosure provides an asymmetrical coverage of 60° (- 20° by + 40° of site angle).

The system can be arrayed both horizontally and vertically to fulfill multiple application requirements in terms of audience geometry, type of event and program material. When combined with the SB28 subwoofer, ARCS® II delivers an extended LF contour with added impact. Whether permanently installed, on the road as a standalone FOH system or a complement to another WST® line source, ARCS® II naturally deploys all the power of WST®, offering a unique near-field listening experience throughout the audience.

Usable bandwidth  (-10dB)

50 Hz - 20 kHz ([ARCS II] preset)

Nominal directivity (-6dB)

Horizontal: 22.5° symmetrical x N elements

Vertical: 60° asymmetric (-20°/+40°)

Maximum SPL

140 dB ([ARCS II] preset)

RMS power handling capacity

LF: 600 W

HF: 100 W

Components

LF: 1 x 15" neodymium weather-resistant with 4’’ coil

HF: 1 x 3"  neodymium diaphragm compression driver

Nominal impedance: LF = 8 ohms, HF = 8 ohms

Rigging

LIFTBAR certified for 6 ARCS II in a horizontal array

ARCBUMP certified for 4 ARCS II in a vertical array

Physical data

W/w x H x D: 439/190 x 820 x 652 mm - 17.3/7.5 x 32.3 x 25.7 in

Weight (net): 50 kg / 110 lbs

Connectors: 2 x 4-pin SpeakON®

Cabinet: Baltic birch plywood

Finish: Grey brown, RAL 8019®

Front: polyester powder-coated steel grill Airnet® acoustically neutral fabric

Rigging elements: steel with dual coating (zinc and polyester powder)