With their twelve loudspeakers built into a sphere, dodecahedrons have an omnidirectional radiation characteristic and are therefore used for acoustic measurements, where the directional sound radiation of conventional loudspeaker boxes is not desired.
Our dodecahedrons at a glance
|Type||completely colored plastic sphere (LDPE)||completely colored plastic sphere (LDPE)||completely colored plastic sphere (LDPE)|
|Color||yellow or white||red or white||red or white|
|Diameter||250 mm||360 mm||360 mm|
|Mass||4,1 kg||10,2 kg||35,5 kg|
|Electric power||220 W||600 W||600 W|
|Frequency range||to 10.000 Hz||to 5.000 Hz||from 4.000 Hz|
|Sound power level
with pink noise
with white noise
|Lw = 120 dB
Lw = 112 dB
|Lw = 125 dB
Lw = 117 dB
|Electric impedance||5 Ohm||5 Ohm||5 Ohm|
|Connection||Speakon NL4FC||Speakon NL4FC||Speakon NL4FC|
|Directivity||building acoustic measurements acc. to ISO 10140 and ISO 16283 room acoustic measurements acc. to ISO 3382||building acoustic measurements acc. to ISO 10140 and ISO 16283 room acoustic measurement acc. to ISO 3382||building acoustic measurements acc. to ISO 10140 and ISO 16283 room acoustic measurements acc. to ISO 3382|
|Typical application area||vehicle acoustics, room acoustics from office to medium hall sizes, building acoustics up to medium sound insulation (e.g. office).||room acoustics even for large halls, building acoustics in all application areas, test facilities and in situ||only in combination with m|dod 360A as test stand sonication in the frequency range extended upwards|
|Special features||very small and very light, high sound quality loudspeaker||broadband allrounder with high sound power||special tweeter dodecahedron for test facilities|
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Dodecahedron m|dod 250C
The dodecahedron m|dod 250C consists of a plastic sphere and twelve high sound quality speakers with neodymium magnets and weighs only 4.1 kg. Its handle makes it comfortable to carry by hand. The small diameter of 250 mm also allows positioning under limited space conditions. This makes the dodecahedron m|dod 250C suitable for many acoustic measurements of lightweight structures from the rail and automotive sectors. But it can also be used very well for sound insulation measurements in office buildings or in room acoustics.
Dodecahedron m|dod 360A
The dodecahedron m|dod 360A consists of a plastic sphere and twelve loudspeakers with neodymium magnets and weighs 10.2 kg. Its handle makes it comfortable to carry by hand. With a diameter of 360 mm and high sound power, the dodecahedron covers the classic application area of building and room acoustic measurements in situ and in test facilities.
Set of dodecahedron m|dod 360A and m|dod 360HTA
In the automotive and rail vehicle sectors, but also in other industries, the frequency range above 5,000 Hz is also of great interest. For sound insulation measurements in the test stand, very high sound power levels are required in the high-frequency range, since the sound insulation of the components increases with frequency. For this special application, the tweeter dodecahedron m|dod 360HTA was developed to complement the broadband dodecahedron m|dod 360A.