Item number: 1023-XXXXX

The AT-661w is a passive, horn loaded fullrange speaker system. It was specially developed for outdoor applications and has a weather proof housing, waterproof connections and membrane impregnation. It impresses with its high performance capacity and outstanding speech intelligibility.

Main features

  • 2 × 10" / 1.4" compression driver (3.5" diaphragm) on the rotatable CD horn
  • Electronic high frequency protection
  • Nominal power rating: 600 watts at 4 ohms
  • Dispersion: 90 ° × 60 ° (H × V)
  • SPL max.: 138 dB
  • Connections: 2 × 4-pin terminal with watertight cable gland
  • Weather proof VSM housing reinforced with steel braces
  • Resistant PU coating comes as standard
  • Available in RAL Classic, NCS or Pantone colors on request
  • Weatherproof mounting options (from stainless steel) are available on request
  • 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 fully horn loaded point source speaker system, 2-way, vented design, weather resistant
power rating (nominal)
600 Watt
power rating (program)
1200 Watt
power rating (peak)
2400 Watt
2 × 10" long excursion with impregnated cone, 1,4" compression driver on rotatable CD-Horn with self-resetting IPC[*]-HF protection, neodymium magnets
105 dB
maximum SPL
138 dB
frequency range
65 Hz – 20 kHz
2-way design
nominal impedance
4 ohms
nominal dispersion (h × v)
90° × 60°

Physical features

weatherproof VSM/aluminum cabinet
front design
acoustic foam, same colour as enclosure
protection grille
steel grille, ball impact resistant, powder-coated
approx. 32 kg
standard colours
scratch-proof polyurethane coating, black
mounting points
8 × M6 threads
weather protection
polyurethane coating and water-repellant speaker cone impregnation
2 × 4-pin terminal with removable watertight cable gland
dimensions (w × h × d)
455 × 840 × 465 mm

Optional features

optional colours
RAL Classic / NCS / Pantone on request
integrated 100 V transformer
on request

CAAD simulation data

simulation data
EASE, Fohhn Designer

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, with speaker preset
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 with speaker preset
weight: net weight without optional equipment
nominal dispersion: -6 dB compared to the main dispersion axis

Contact us

+49 7022 93323-0

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