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


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 watts
power rating (program)
1200 watts
power rating (peak)
2400 watts
2 × 10" long excursion with impregnated cone, 1,4" compression driver on rotatable CD-Horn with self-resetting IPC[*]-HF protection, neodymium magnets
maximum SPL
frequency range
65 Hz – 20 kHz
nominal impedance
4 ohms
2-way design
nominal dispersion (h x v)
90° × 60°

Loudspeaker 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

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

CAAD simulation data

simulation data

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

Contact us

+49 7022 93323-0

Contact form
Close menu