Dodecahedron Speaker

Compact. Lightweight. Powerful.

  • Omnidirectional Sound Source
  • DS3 Dodecahedron Loudspeaker
  • PA3 Power Amplifier

Accessories Applications Technical Data

The omnidirectional DS3 Dodecahedron Speaker is a lightweight yet powerful sound source for measurement applications in room and building acoustics. The DS3 is combined with the remote-controlled PA3 Power Amplifier to make up the Dodecahedron Speaker Set for professionals. The optimized frequency response ensures precise measurements in accordance with the ISO 16283 and ISO 3382 standards.

At a Glance

  • Acoustically flat frequency response
  • Maximum sound power level 121 dB
  • Wireless remote control


The Dodecahedron Speaker Set, comprising of the DS3 Dodecahedron Loudspeaker and the PA3 Power Amplifier, is the measuring equipment designed for professionals for use in their daily measuring tasks in room and building acoustics. Optimized design, combined with unique precision, low weight and flexible operation establish this equipment as a reference in the marketplace.

The DS3 Dodecahedron Loudspeaker is built from twelve specially-developed dynamic drivers that ensure a uniform emission of the acoustic test signal. The PA3 Power Amplifier supplies an equalized pink noise to the DS3. The combination of PA3 and DS3 thus generate an acoustically-flat pink noise under free-field conditions.

DS3 Dodecahedron Speaker

The DS3 Dodecahedron Speaker is minimized in weight while providing maximum performance and long-term stability. With only 7.5 kg and a typical sound power level of 121 dB, the DS3 is most suitable for use on site. The high-performance dynamic driver frames are made of solid aluminum. This provides efficient heat dissipation and hours of level stability. The robust protective grilles prevent damage to the membranes under tough transportation and working conditions. Using the DS3 as a reference sound source provides precise measurement results.

PA3 Power Amplifier

The portable PA3 Power Amplifier contains a DSP-based signal generator with equalizer. In conjunction with the DS3 Dodecahedron Speaker, a pink noise is produced with an acoustically flat frequency response. The equalization ensures that the ISO 16283-1 requirement of ≤ 8 dB difference between contiguous 1/3rd octave bands in the emitted sound is met. A test signal optimized for maximum sound power is available as well as an external audio input socket.

All operating components are positioned on the sloping sides of the amplifier and illuminated - thus easily recognizable and accessible from a standing position. For low-frequency measurements, an active subwoofer can also be connected. The test signal can be switched on and off from outside the measuring room with the push of a button on the supplied radio remote control.



Dodecahedron Speaker Set

  • PA3 Power Amplifier
    with built-in noise generator
  • DS3 Dodecahedron Speaker
  • Speaker Stand for DS3

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