Voice Alarm

LEN-150

The LEN-150 is a passive 100 volt line source speaker certified according to EN 54-24 type B for use in voice alarm systems. Like all products in the Voice Alarm series, it is equipped with a weatherproof, steel-reinforced aluminum housing, making it equally suitable for indoor and outdoor use. The LEN column loudspeakers guarantee excellent speech intelligibility and long ranges even in difficult acoustic environments.

Main features

  • 12 × coated 4" chassis
  • Uniform directivity
  • Suppression of unwanted side lobes thanks to Fohhn Source Division Waveguide
  • Weatherproof without additional protection (degree of protection IP54 according to IEC 529 / EN 60529)
  • 8 × M6 thread for safe installation
  • Available in different colors (RAL Classic, Pantone, NCS) or with Fohhn Texture Design

Colours

Fohhn technologies

Technical data

Electroacoustic features

acoustic design
weatherproof passive line source speaker system, closed, passive 2-way CD crossover and filter, suppression of side lobes by Source Division Waveguides
components
12 × 4" drivers with treated cones
sensitivity 1 W @ 4 m in accordance with EN 54-24
86 dB SPL
SPLmax 100 V @ 4 m in accordance with EN 54-24 (trafo S/M/L)
100 dB SPL /103 dB SPL /106 dB SPL
transformer options, power handling in acc. with EN 54-24 100 V (trafo S/M/L)
65 W / 130 W / 260 W
transformer options, power handling in acc. with EN 54-24 70 V (trafo S/M/L)
31.8 W / 63.6 W / 128.9 W
impedance 100 % tap (trafo S/L/M)
154 ohm / 77 ohm / 38 ohm
impedance 50 % tap (trafo S/M/L)
308 ohm / 154 ohm / 77 ohm
impedance 25 % tap (trafo S/M/L)
615 ohm / 308 ohm / 154 ohm
2-way design
yes
nominal directivity (h x v) (-6 dB, average @ 1-4 kHz)
130° × 14°
directivity (h x v) (octave band) in acc. with EN-54-24 @ 500 Hz
360° × 35°
directivity (h x v) (octave band) in acc. with EN 54-24 @ 1000 Hz
190° × 20°
directivity (h x v) (octave band) in acc. with EN 54-24 @ 2000 Hz
120° × 14°
directivity (h x v) (octave band) in acc. with EN 54-24 @ 4000 Hz
95° × 8°

Loudspeaker features

enclosure
weatherproof aluminium housing, powder coated, steel bracings
front design
ball impact resistant grille, galvanized and powder coated in housing colour backed by acoustically transparent foam
weight (trafo S/M/L)
approx. 12.5 kg / 13 kg / 14.5 kg
standard colours
black (RAL 9005) or white (RAL 9016), powder-coated
mounting points
8 × M6 screw threads
certificates
EN 54-24 type B
EN 54-24
1
connectors
terminal connectors capable of receiving up to 4 mm², two per pin, terminal cover with dual cable gland for up to 10 mm cable diameter
dimensions (W × H × D)
approx. 130 × 1460 × 120 mm

Optional features

optional weather protection
as standard (protection class IP54, in accordance with IEC 529 / EN 90529)
optional connectors
ceramic terminals capable of receiving up to 2.5 mm²
optional colours
RAL Classic / NCS / Pantone on request, Fohhn Texture Design

CAAD simulation data

simulation data
EASE, CLF, Ulysses

power rating (nominal/program): according to IEC-60268-5 long term
power rating (peak); maximum SPL: peak, 20 ms with bandpass filtered pink noise signal according to IEC 60268-2 at one octave above the lower limit of the frequency range
sensitivity: 2,83 V at 8 ohms (2 V at 4 ohms, 4 V at 16 ohms) at a distance of 1 m under anechoic fullspace conditions
frequency range: -10 dB under anechoic halfspace-conditions
weight: net weight without optional equipment
Intelligent Protection Circuit (IPC): voltage-controlled semiconductor circuit protecting the HF-driver against overload highly effective and with very short attack time
cut-off frequency: -10 dB under anechoic halfspace-conditions with speaker preset
heat dissipation: pink noise, 6 dB crest, 1/4 Pmax

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+49 7022 93323-0

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