technical specifications LR15B
general•High-performance line-array LFE system for
medium applications•

Stackable and flyable with LR15 line-array or inseparate curved arrays•

Maximum deployment flexibility also in cardioid and end-fire arrays•

Neodymium dual-coil 15” 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

description
The LR15B is the dedicated low-frequency extension
to the LR15 pro-ribbon line-array. It can also be
combined with any other Alcons pro-ribbon system, inboth permanent and portable applications.
The front-loaded system delivers a super accuratebass and sub response with highest output under
lowest distortion, due to the long-stroke 15” woofer.
This new-generation transducer is fitted with a large,
dual- 3.5” voice-coil Neodymium motor, enabling asignificantly-extended excursion*, while maintaining ahigh 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: TheLR15B can be used as single subwoofer or inmultiples; As end-fire or cardioid array; Together with

LR15 or in separate sub-only arrays. All functionality ispossible in stacked or flown configurations.
The integrated stand mount adapter provides for easy
top/sub combinations with any Alcons pro-ribbonsystem.
Rated for a high WorkingLoadLimit with 1:10 safety
ratio, the versatile rigging system, with front and rear
splaying possibility, enables straight or pre-curvedflown (cardioid) arrays, to be flown besides or behindan LR15 array.
Array configurations can be simulated through theLR15 GLL in the Alcons Ribbon Calculator (ARC),
Alcons’ high-resolution 3D simulation program.
Mobile (cardioid) stacks of up to 3 units can betransported through the PRRGLR15B pre-rig,
including stack-specific softcover.

140224 • Due to Alcons Audio’s continuous R&D, all specifications are subject to change without prior notice.

evolutionary audio solutions™

For full system performance, the LR15B is to be driven
and controlled by the ALC amplified loudspeakercontroller; Driven by the ALC, the LR15B delivers fulloperation flexibility, maximum sound quality andoutput power with long-term operation reliability.

The Signal Integrity Sensing™ pre-wiring ensurescomplete cable/connector compensation between theLR15B 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.

technical specifications LR15B
dimensional drawing

technical specifications
Frequency response

43 Hz - 200 Hz(+/- 3 dB)

35 Hz -(+/- 10 dB)

Sensitivity nominal

99 dB (40 Hz - 100 Hz)

Nominal impedance

8 ohmsRecommended drive

Sentinel10, max. 3 pcs. per channel (2,7 ohms)

Nominal SPL peak

124 dB (Sentinel3 40 Hz - 100 Hz)
130 dB (Sentinel10 40 Hz - 100 Hz)
135 dB (comparitive)

Dispersion H x V

omni/(hyper)cardioid in array with processing

physical specifications
System1x AW15.352ND-8 15”, ventedConnectors

3x Speakon NL4 input/link

Physical dimensions

mminches

Height452

17.8

Width582

22.9

Depth582

22.9

Weight (approx.)

kglb3168.3

Warranty

A:

Alcons Audio
De Corantijn 101689 AP ZWAAGThe Netherlands

E:
W:
T:

info@alconsaudio.com
www.alconsaudio.com+31 (0)229 28 30 90

140224 • Due to Alcons Audio’s continuous R&D, all specifications are subject to change without prior notice.

Subwoofer

Drivers LF

6 years limited

evolutionary audio solutions™