Voice Alarm

LEN-220

The LEN-220 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

  • 18 × 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
  • In order to ensure performance and operational safety, Fohhn system amplifiers including the correct speaker preset are required.

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
18 × 4" drivers with treated cones
sensitivity 1 W @ 4 m in accordance with EN 54-24
87 dB SPL
SPLmax 100 V @ 4 m in accordance with EN 54-24 (trafo S/M/L)
102 dB SPL /105 dB SPL /108 dB SPL
transformer options, power handling in acc. with EN 54-24 100 V (trafo S/M/L)
77.5 W / 155 W / 310 W
transformer options, power handling in acc. with EN 54-24 70 V (trafo S/M/L)
38 W / 75.4 W / 153.1 W
impedance 100 % tap (trafo S/L/M)
129 ohm / 65 ohm / 32 ohm
impedance 50 % tap (trafo S/M/L)
258 ohm / 129 ohm / 65 ohm
impedance 25 % tap (trafo S/M/L)
516 ohm / 258 ohm / 129 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° × 25°
directivity (h x v) (octave band) in acc. with EN 54-24 @ 1000 Hz
190° × 15°
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°

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. 17 kg / 18 kg / 19.5 kg
standard colours
black (RAL 9005) or white (RAL 9016), powder-coated
mounting points
10 × 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 × 2200 × 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
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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