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AT-661w

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Main features

Main features

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.

  • 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)
  • SPLmax: 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
  • To ensure optimal performance and operational reliability, Fohhn system amplifiers including the correct speaker preset are required.

Item number: 1023-XXXXX

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Technical data

Technical data
Technical data

Physical features

enclosure
multiplex birch plywood
dimensions (w × h × d)
456 mm × 841 mm × 466 mm
weight
33 kg
front design
acoustic foam in enclosure color
standard colors
black (RAL 9005), white (RAL 9016)
coating
polyurethane
connectors
2 × 4-pin terminal block (for flexible and rigid conductors up to 3.3
mounting points
8 × M6 threads

Electroacoustic features

acoustic design
passive fully horn loaded point source speaker system, 2-way, vented design, weather resistant
components
2 × 10" long excursion with impregnated cone, 1,4" compression driver on rotatable CD-Horn with self-resetting IPC[*]-HF protection, neodymium magnets
power rating (nominal)
600 W
power rating (program)
1200 W
power rating (peak)
2400 W
nominal impedance
4 Ω
sensitivity
105 dB
SPLmax
138 dB
frequency range
65 Hz - 20 kHz
nominal dispersion (h × v)
90 ° × 60 °

Environmental conditions

Fohhn Weather Rating 1
standard
Fohhn Weather Rating 2
standard

Optional features

special colors
Pantone, RAL Classic, NCS, RAL Design, other color systems on request
100-V transformer
yes

CAAD simulation data

simulation data
EASE, CLF, ulysses, Fohhn Designer

IP code: according to EN/IEC 60529
power rating (program): according to IEC 60268-5 (short term)
power rating (nominal): according to IEC 60268-5 (long term)
power rating (peak): 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 Ω (2 V at 4 Ω, 4 V at 16 Ω) at a distance of 1 m under anechoic half-space conditions
SPLmax: 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
frequency range: −10 dB under anechoic half-space conditions, with speaker preset

Fohhn technologies

Applications / use cases