LR18B - compact mid-size line-array bass

  • High-performance line-array LFE system for medium to larger applications
  • Stackable and flyable with LR18 line-array or in separate curved arrays
  • Maximum deployment flexibility also in cardioid - and end-fire arrays
  • Neodymium dual-coil 18” driver with lowest possible distortion
  • SIS™ pre-wired for very high system damping and further reduced distortion
  • Front-positioned NL4 connector for easy cardioid connection

Product description

The LR18B is the dedicated low-frequency extension to the LR18 pro-ribbon line-array. It can also be combined with any other Alcons pro-ribbon system, in both permanent and portable applications.

The front-loaded system delivers a super accurate bass and sub response with highest output under lowest distortion, due to the super long-stroke 18” woofer. This new-generation transducer is fitted with a large, dual- 4.5” voice-coil Neodymium motor, enabling a significantly-extended excursion*, while maintaining a high sensitivity. Specific attention in this design has been paid to obtain lowest possible distortion. The Max-Vent™ port design combines further increased output with low power compression. *(not included in SPLpeak spec).

Optimal deployment flexibility is guaranteed: The LR18B can be used as single subwoofer or in multiples; As end-fire or cardioid array; Together with LR18 or in separate sub-only arrays. All functionality is possible in stacked or flown configurations.

The integrated stand mount adapter provides for easy top/sub combinations with any Alcons pro-ribbon system.

Rated for a high WorkingLoadLimit with 10:1 safety ratio, the versatile rigging system, with front and rear splaying possibility, enables straight or pre-curved flown (cardioid) arrays, to be flown besides or behind an LR18 array.

Array configurations can be simulated through the LR18 GLL in the Alcons Ribbon Calculator (ARC), Alcons’ high-resolution 3D simulation program.

Mobile (cardioid) stacks of up to 3 units can be transported through the PRRGLR18B pre-rig, including stack-specific softcover.

For full system performance, the LR18B is to be driven and controlled by the ALC amplified loudspeaker controller; Driven by the ALC, the LR18B delivers full operation flexibility, maximum sound quality and output power with long-term operation reliability.

The Signal Integrity Sensing™ pre-wiring ensures complete cable/connector compensation between the LR18B and ALC, significantly increasing response accuracy and reducing both linear and non-linear distortion to an absolute minimum, regardless of cable length and system impedance.

Dimensional drawing

Technical specifications

Frequency response 40 Hz - 200 Hz (+/- 3 dB)
34 Hz - (+/- 10 dB)
Sensitivity nominal 98 dB (40 Hz - 100 Hz)
Nominal impedance   8 ohms
Recommended drive Sentinel10 min. max 3 pcs.
per channel
Nominal SPL peak 124 dB (Sentinel3 40 Hz - 100 Hz)
130 dB (Sentinel10 40 Hz - 100 Hz)
135 dB (comparative)
Dispersion H x V omni / (hyper) cardioid
in array with processing

Physical specifications

System   subwoofer, front loaded
Drivers   1x AW18.452ND-8 18” vented
Connectors   3x Speakon NL4 input/link
Physical dimensions   mm          inches
Height   525           20.7
Width   800           31.5
Depth   650            25.6
Weight (approx.)   55,0 kg      121.2 lb
Warranty   6 years limited


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