Audio Installation



Passive loudspeaker 100 W @ 8 Ohm. 4 x 2.75'' Woofer.

The UDA 4 is a high output, full range, frequency shaded passive column speaker which provides voice intelligibility and musical clarity in acoustically challenging environments such as shopping malls, houses of worship, restaurants, congress halls, hotels, airports, train stations, swimming pools, conference rooms or museums, where reflective surfaces create a reverberant sound field. 

The UDA 4 features four 2.75" diameter transducers, 0.75" voice coil, in a closed box enclosure. This makes the UDA 4 suitable to be installed in rooms with problematic sound reflections where vocal intelligibility is paramount.

The narrow extruded aluminium enclosure has been designed for a seamless visual integration in every venue and is available in black or white finish. The grille is also made of aluminium and internally covered with a protective water repellent fabric which prevents splashed water and dust from damaging the transducers, featuring thereby an IP 65 protection rating.

Two wall mounting accessories are included. Wall 4V allows the enclosure to be aimed up to +/- 50º horizontally and up to +/- 30º vertically. Wall 4H allows the enclosure to be aimed up to +/- 50º sideways only

Each unit can be connected to either the input terminal strip. Connections are protected by a metallic weather resistant cover featuring a cable gland on the bottom which prevents water or moisture from causing a shortcircuit. 

The accessory UDA 16 TL (not included) allows for high impedance connection of the UDA 4. It houses a high quality 120Wrms@100V line transformer (60Wrms@70V) that makes it suitable for installations where long cables have to be deployed. 

Tuning presets are available to enhance the frequency balance and intelligibility.

4 x 2.75'' Diameter
Nominal Impedance
8 ohm
Minimun Impedance
8 ohm @ 668 Hz
RMS Power (1)
50W (28.3V rms)
Program Power (2)
Peak Power (3)
200W (56.6V peak)
Sensitivity (2.83v @ 1m)
89 dB SPL
Peak SPL (4)
112 dB SPL
Frequency Range (5)
150Hz to 23kHz (-10dB)
170Hz to 20kHz (-6dB)
Recommended High Pass Filter
Butterworth 24dB/Oct, 100Hz
Horizontal Coverage (-6dB)
Vertical Coverage (-6dB)
IP Rating
Aluminium, water proof fabric backing
Speakon and barrier strip
Black or white
Wall mounting accessory Wall 4V +/- 50º horizontally and up to +/- 30º vertically. Wall 4H up to +/- 50º sideways only
Dimensions (HxWxD)
337x104x116 mm
13.3x4.1x4.6 in
Net Weight
2.9 kg
6.4 lb
Included accessories
Wall mounting accessory Wall 4V
Optional accessories
(1) Based on a 2h power test run with pink noise, 6 dB crest factor, IEC filtered.
(2) Conventionally, 3dB higher than RMS power
(3) Corresponds to the crest factor for the test described in (1)
(4) Calculated based on Peak Power and sensitivity
(5) Free field

  • Passive column speaker.
  • Suited for reverberant environments.
  • 90° Vertical, 140° Horizontal Coverage.
  • 100W Program.
  • Stylish and visually discreet design.
  • Extruded aluminium enclosure.
  • Low and High impedance available.
  • Available in black or white finish.


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