Alcons launches LR28/110 wide dispersion line array
The three-way, line-source system previewed at Prolight + Sound can be used as a vertical array with extended horizontal coverage.
Alcons has now officially launched the LR28/110 Wide Dispersion Larger Format Line Array – a three-way, line-source sound system for use as vertical array with extended horizontal coverage.
At the mid/high heart of the LR28 system – which was previewed last month at Prolight + Sound – sits the RBN1402rsr, a 14in tall, single-diaphragm pro-ribbon transducer with a 14in voice-coil.
Its super-fast impulse response, HF peak power handling of 3000W with RMS-to-peak ratio of 1:15 and all-natural cylindrical wavefront delivers a fully-predictable linear response, with ultra-low distortion and precise pattern control, Alcons says.
The RBN1402rsr and mid section (featuring four high-efficiency 6.5in midrange transducers) are jointly mounted on an aluminium cassette for optimised heat-dissipation/reduced power-compression and prolonged system output. The LF section comprises two reflex-loaded, custom 14in woofers with reinforced cone and large voice-coil Neodymium motor structure for improved heat dissipation and reduced power compression.
The patented 110º horizontal dispersion of the LR28/110 is maintained up to the highest frequencies and it can be deployed in dedicated 110º arrays, in combination with the LR28/80, with the LB28 line array bass extension or with both in larger arrays. The LR28/80 and LR28/110 are powered and controlled by four channels of the Sentinel10 amplified loudspeaker controller.
The Signal Integrity Sensing pre-wiring of the LF and MF sections ensures dynamic cable/connector compensation between the LR28 and Sentinel, resulting in a fast, tight mid/bass response and reducing distortion even further. Additionally, the LE28 rigging system enables angle setting on the cabinets without lifting the array, resulting in safer and faster set-up with minimal handling. The flying system facilitates two different ways of array assembling - caterpillar and pre-rig-style - with compressed and non-compressed suspension. It has a WLL of 24 cabinets under 10:1 safety.
The LR28/110 is part of the Alcons application-configurable touring package, including the LR28 line-arrays, LB28 bass array- extension, BC543 cardioid subwoofer system, Sentinel amplified loudspeaker controller, ARC 3D-simulation tool and power/signal- distribution and transport logistics.
"Up to 90% lower distortion and a flat frequency response up to and beyond 20.000Hz at the highest concert sound pressure levels became a reality with the LR28,” said Philip ‘Dr Phil’ de Haan, Alcons co-founder and R&D chief. “The LR28/110 module extends this capability, delivering enhanced coverage and even better audience experience.”