L-Acoustics ARCS II 15" Sabit Açı Montaj Tip Hoparlör, 22.5° X 60°

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L-Acoustics ARCS II Constant Curvature WST® Line Source

 

The ARCS II features one 15’’ neodymium LF driver in a bass-reflex tuned enclosure and one 3’’ neodymium diaphragm compression driver coupled to a DOSC® waveguide. The ARCS II is based on an active 2-way design with a nominal impedance of 8 ohms for both the HF and the LF section. The ARCS II cabinet is made of first grade Baltic birch plywood to ensure maximum acoustical and mechanical integrity.

The ARCS II enclosure operates over the 50 Hz to 20 kHz nominal frequency bandwidth. This response can be lowered down to 25 Hz with the addition of the SB28 subwoofer.
The DOSC® HF waveguide generates a 22.5° symmetric x 60° asymmetric (-20°/+40°) directivity pattern. These values correspond either to the horizontal x vertical coverage angles, for an ARCS II enclosure standing vertically, or to the vertical x horizontal coverage angles, for an ARCS II enclosure in the radial orientation.
The ARCS II rigging system allows assembling a horizontal or vertical array with a constant curvature. The DOSC® waveguide in the HF region allows the system to be arrayed without breaking the inter-element acoustic coupling. The WST® (Wavefront Sculpture Technology) criteria are then fulfilled, so that such an array can be qualified as a true line source. An ARCS II line source provides a smooth tonal response and a coverage that is free of secondary lobes over the entire frequency range.

The ARCS II enclosure is exclusively driven and bi-amplified by the LA8 amplified controller. This one ensures active system linearization, intelligent transducer protection, and optimization for the loudspeaker system. With a single factory preset designed to be used in the different operation modes of the ARCS II, the performance of the system will depend upon the choice of the physical system configuration.

 

 

Usable bandwidth (-10dB) 50 - 20k Hz (ARCS II present)
Nominal directivity (-6dB)

Horizontal: symmetrical 22.5°

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)
Protection rating: IP55

 

 

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