LR15/120 - ultra-compact line-array module

  • High-performance line-array system for small to medium applications
  • HiFi sound quality at concert Sound Pressure Levels
  • Unique fully symmetric and coherent horizontal and vertical pattern control
  • 5" pro-ribbon HF section with exceptional intelligibility and "throw"
  • Next-gen woofers with FlowVent™ loading for full-range performance
  • 1:1 non-compressed linear sound reproduction, with up to 90% less distortion

Product description

The LR15/120 is a 2-way, “ultra-compact” format line-source sound system, combining the highest sound quality possible with high SPL capabilities and throw in a very compact form factor.

By implementing Alcons’ pro-ribbon technology for mid and high frequencies, a super-fast impulse response with up-to-90% less distortion is achieved. This enables the LR15 to offer a fully intuitive linear response, with perfect intelligibility and non- compressed identical tonal balance at any SPL.

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

The pro-ribbon’s power handling of 1100W and RMS-to-peak ratio of 1:15, caters for a superb intelligibility and throw with a dynamic headroom reserve, even under the highest outputs.

The LF-section consists of two next-gen 6.5” transducers; a perfect hybrid of a woofer and mid- bass driver featuring a 2-in. dual-coil motor structure with significantly-extended excursion. The woofers are loaded by FlowVent™ ports, providing optimised flow with minimal port compression while extending theusable LF response down to 53Hz.

The resulting super accurate low-mid and bass response with class-leading output under lowest distortion possible, is a perfect match with the pro-ribbon MHF.

The LR15 is driven by the 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 ensures dynamic cable/connector compensation between the LR15 and ALC; This offers a 1:1, undistorted natural sound reproduction, regardless of cable length and amplifier impedance load (system damping factor 10.000).

The 3-point rigging and transport system enables angle-setting on the cabinets without lifting the array, resulting in safer and faster set-up with minimal handling and a WLL of 18 cabinets under 10:1 safety. The LR15 is available with a 90° (LR15/90) or 120° (LR15/120) horizontal dispersion.

Dimensional drawing

Technical specifications

Frequency Response    
+/- 3 dB   74 Hz - 20.000 Hz
+/- 10 dB   53 Hz -
Sensitivity (nominal)   99 dB (200 Hz - 10 kHz)
Nominal Impedance   8 ohms
Recommended drive   Sentinel10. max 3 pcs. per channel (2.7 ohms)
Nominal SPL peak    125 dB (Sentinel3   200 Hz - 10 kHz)
    131 dB (Sentinel10 200 Hz - 10 kHz)
Dispersion H x V (array)   90° or 120° x depending on array length
Dispersion H x V (single)   90° or 120° x 15° (@10kHz)

Physical specifications

System   2-way, full-range
Filtering   passive
Drivers LF   2 x AW65.22ND-16 6.5", vented
Driver HF   1 x RBN502rs 5" pro-ribbon driver
Connectors   2 x Speakon NL4 input/link
Physical dimensions   mm              inches
Height   176                 6.9
Width   580              22.8
Depth   333               13.1
Weight (approx.)   14 kg           30.9 lb
Warranty   6 years limited

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