The AT-40 is a passive fullrange speaker for fixed installations. It features a high power rating and an excellent performance and throughput capacity.
In addition to outstanding technical features, the models of the Arc series are generally characterized by their attractive design.

Main features

  • 12" / 1.4" compression driver (3.5" diaphragm), rotatable CD horn
  • Electronic high frequency protection
  • Nominal power rating: 500 watts at 8 ohms
  • Dispersion: 80° × 50° or 60° × 50° (H × V)
  • SPL max.: 131 dB
  • Connections: 2 × Speakon and 8-pole Phoenix connector
  • High-quality wooden enclosure (multiplex birch)
  • Available in RAL Classic, NCS or Pantone colors on request
  • Optionally available with weatherproof PU coating
  • Various mounting options
  • In order to ensure performance and operational safety, Fohhn system amplifiers including the correct speaker preset are required.


Fohhn technologies

Technical data

Electroacoustic features

acoustic design
passive loudspeaker, 2-way, vented design
power rating (nominal)
500 watts
power rating (program)
1000 watts
power rating (peak)
2000 watts
12" / 1.4" on rotatable CD-horn, with self-resetting IPC[*]-HF protection, fully neodym
100 dB
maximum SPL
131 dB
frequency range
45 Hz – 20 kHz
nominal impedance
8 ohms
2-way design
nominal dispersion (h x v)
80° × 50° or 60° × 50°


multiplex birch plywood, reinforced with steel braces
front design
acoustic foam, same colour as enclosure
protection grille
steel grille, ball impact resistant, powder-coated
approx. 24 kg
standard colours
textured paint, black or white
mounting points
9 × M8 and 3 × M6 thread
2 × Neutrik NL4 Speakon and 8-pole Phoenix connector
dimensions (W × H × D)
approx. 380 × 585 × 410 mm

Optional features

optional weather protection
polyurethane coating, water-repellent speaker cone impregnation
integrated 100 V transformer
120 W / 60 W / 30 W or 240 W / 120 W / 60 W
optional colours
RAL Classic / NCS / Pantone on request

CAAD simulation data

simulation data
EASE, Ulysses

power rating (nominal/program): according to IEC-60268-5 (long term/short 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

Contact us

+49 7022 93323-0

Contact form
Close menu