Alcons introduces The LR15 compact ribbon driver line array

At InfoComm 2023, Alcons Audio announced the introduction of the LR15, a 2-way, “ultra-compact” format line-source sound system.

The “all-natural cylindrical” wavefront of the RBN502rs 5” pro-ribbon transducer with 5” voice-coil and the symmetrical component configuration bring a natural pattern control in both the vertical as well as the horizontal plane up to the highest frequencies, says Alcons.

The LF-section consists of two 6.5” transducers; reportedly a hybrid of a woofer and mid-bass driver featuring a 2" dual-coil motor structure with extended excursion. The woofers are loaded by what the Dutch company calls FlowVent™ ports, say to provide optimised flow with minimal port compression while extending the usable LF response down to 53Hz.

The LR15 is driven by Alcons' Sentinel amplified loudspeaker controller, optimising the system’s response by specific VHIR™ drive processing and feedback for each array configuration, including presets for phase-matched low-frequency extensions.


The Signal Integrity Sensing™ pre-wiring delivers dynamic cable/connector compensation between the LR15 and ALC, regardless of cable length and amplifier impedance load (system damping factor 10.000).

The LR15 is available with a 90° (LR15/90) or 120° (LR15/120) horizontal dispersion.

Philip “Dr. Phil” de Haan: “We wanted to achieve the same horizontal dispersion control our LR18, LR24 and LR28 are known for; However, these systems are bi- or quad-amped three-way systems. So, it was not an easy task to obtain this horizontal control with a passive two way system, especially not in the 120-degree version. With the all-natural cylindrical wavefront of our pro-ribbon drivers, it was much easier to achieve the benchmark-setting side-lobe-free vertical projection.”

The LR15 is only the third system in Alcons’ 20 years existence that succeeds a previous system, following the LR16, Alcons’ first line-array and the recently QB363 arrayable subwoofer.

Phil continues: ”The LR15 will eventually replace the LR14 system, that was introduced already in 2004. The LR14 has been, and still is in production in the exact same form for almost 20 years and even today is still more than competitive to recent systems. We believe this very long product life-cycle is a real testimony to the excellent return-on-investment that Alcons systems offer.”