Tannoy iw4 DC
4" Dual Concentric Point Source Ceiling Loudspeaker


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The Tannoy iw4 DC is a full bandwidth in-wall speaker system, using a 4" Tannoy Dual Concentric point source, constant directivity drive unit, designed for installation into standard stud partition wall systems. It may also be used in cavity wall installations constructed with standard thickness drywall as well as a wide range of other wall construction types with a surface thickness of up to 1". This compact unit is specifically designed for applications requiring the combination of premium sonic quality for music and speech reinforcement and exceptional reliability and intelligibility.

The Tannoy Dual Concentric drive unit comprises a multi fiber paper pulp mid bass cone and a 0.75" ferrofluid cooled, titanium dome HF unit with neodymium magnet system. The mid-bass and tweeter sections of this constant directivity driver are coincidentally aligned to a true point source; ensuring a wide and controlled dispersion for optimum coverage; this while avoiding the massive loss of energy, in the vertical plane at the crossover frequency, inherent in two-way discrete designs.

Featuring a wide bandwidth frequency response a very low distortion, the iw4 DC is also equipped with dynamnic high frequency protection. This compact unit is specifically designed for applications requiring the combination of premium sonic quality for music and speech reinforcement and exceptional reliability and intelligibility

The driver and passive frequency dividing network are mounted in an injection molded, paintable front baffle manufactured from UV/weather resistant UL94V-0 ABS material. The class leading performance is further enhanced by the inclusion of four self aligning, spring loaded clamps; allowing for quick install but also for simple removal or reorientation of the loudspeaker. The rigidity of the clamps and baffle combination crucially provides the acoustically optimum bond to the wall surface without the risk of distortion to the baffle itself. Complementing any style of decor, the perforated metal grill and discreet molded baffle can be painted to blend seamlessly with any environment.

Gold plated spring loaded terminals are provided for ease of installation and a steel back can is available as an optional installation accessory.

Tannoy iw4 DC Features:

  • 100mm (4.00") point source Dual Concentricâ„¢ driver
  • Extended frequency response and very low distortion
  • Wide, controlled constant directivity dispersion for optimum coverage
  • Does not suffer from massive loss of energy in the vertical plane at crossover caused by two way discrete designs
  • UV/weather resistant UL94V-0 ABS construction for structural integrity
  • Dynamic high frequency protection
  • Four way self-aligning clamp mounting system
  • Ferrofluid cooled neodymium HF
  • Five year warranty

Tannoy iw4 DC Specifications:

  • General:
    • Frequency Response (-3dB):  88 Hz - 50 kHz
    • Frequency Range (-10dB):  73 Hz - 54 kHz
    • System Sensitivity (1W at 1m):  88dB (1W =2.83V for 8 Ohms)
    • Nominal Coverage Angle:  90 degrees conical
    • Coverage Angle (1 kHz to 6 kHz):  130 degrees conical
    • Directivity Factor (Q):  4.4 averaged 1 kHz to 6 kHz
    • Directivity Index (DI):  5.3 averaged 1 kHz to 6 kHz
    • Rated Maximum SPL:  Average: 106dB / Peak 112dB
    • Power Handling:  Average: 60W / Program: 120W / Peak: 240W
    • Recommended Amplifier Power:  120W @ 8 Ohms
    • Nominal Impedance:  8 Ohms
    • Crossover:  2 kHz - 2nd order LF / 2nd order HF (with Dynamic HF protection)
  • Transducers:
    • Low Frequency:  Dual Concentric constant directivity driver - 4" multi fiber paper pulp mid bass cone.
    • High Frequency:  0.75" titanium dome with neodymium magnet system
  • Physical:
    • Enclosure: Baffle:  UL 94V-0 rated ABS / Grill: Steel, with weather resistant coating
    • Clamping Design:  Security toggle clamp
    • Connectors:  Gold plated spring terminals
    • Hole Cutout:  8.11" x 5.31"
    • Dimensions (H x W):  9.37" x 6.26"
    • Mounting Depth:  3.31"
    • Net Weight per Speaker:  5.73 lbs

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