Dodec Model Comparisons
Dodecahedron (Dodec) speakers provide omnidirectional sound that allows for clear testing of building acoustics and sound insulation. The sources of all 3 Dodecs can be driven from a sound level meter or an internal noise source that has been equalised for a flat response over the complete frequency range.
Is your Dodec or Cabinet speaker meeting the tough SITMA standards for directivity and stability checks?
If not, then take a look at our Dodecs, that will fly through the tests and come with a pretest certificate. Tested in our state of the art calibration facility.
- Manufacturer
-
- SITMA Compliant
- Wattage output
- Frequency Range
- Battery Life
- External Battery
- Weight
- Internal Amp
- Jack Input
- Diameter
- Tripod
- Flight Case
- SoundPower Output Level (DB)
- Remote Control
DL 103
- LookLine
-
- N/A
- 150 W RMS (300 watts peak)
- 50Hz – 20kHz4
- 1 HR
- YES with ACDV version
- 5KG
- YES
- YES
- 26CM
- YES
- YES
- 118Db
- YES
DL 203AC
- Lookline
-
- Yes
- 300 W RMS (600 watts peak)
- 50Hz – 20kHz
- N/A
- NO
- 9kG
- YES
- YES
- 35CM
- YES
- YES
- 125Db
- YES
DL 303
- Lookline
-
- Yes
- 300 W RMS (600 watts peak)
- 50Hz - 20KHz W
- 1HR
- YES
- 9.5kG
- YES
- YES
- 35CM
- YES
- YES
- 125Db
- YES
About the Dodecs
Thanks to careful design, Lookline has placed all the electronic circuits inside the spherical sound sources, making these instruments extremely compact. Within these Dodecs you will find twelve loudspeakers, a digital amplifier and an advanced generator. This maximises the practicality and makes it perfect for conducting measurements in various locations. Operating the omnidirectional sound source is straightforward; it is available in two options one with mains voltage or with a battery.
SITMA Compliance
Our Dodecs meet the following requirements for SITMA Speaker Stability and Directivity checks.
Speaker Stability Check
All testers must conduct a speaker stability check with each of their speakers at least every 2 years. This is to ensure the output level of the speaker does not change during the test, which would impact the overall result.
Speaker Directivity Check
BS EN ISO 140-4:1998 requires speaker directivity to be checked as part of Annex A. This is a mandatory requirement of the SITMA Certification Scheme and must be completed and recorded onto the SITMA Portal annually.
Speaker Directivity can be checked either by the certified tester, or at a facility that offers this service
Find out more about the SITMA requirements.
What Types of Noise are Available On the Dodecs?
Our range of Dodecs have a host of noise settings to help you conduct a range of tests.
White noise & Pink noise – Both noises are standard for acoustic testing
Fast white & Fast pink noise – These are more precise alternatives for real-time measurements
Sine sweep – A sine sweep is exponentially increasing frequency, mainly used for reverberation time measurement (ISO 18233-2006)
Impulsive noise – This noise replicates a sound like a balloon burst or gunshot, useful for Schroeder method reverberation testing
We apply 150W RMS power for smaller models and 300W RMS for larger ones. This ensures high sound pressure levels while maintaining reliability and durability.
We use a range of different features to ensure extended frequency response. Our Dodecs are built with custom designed loudspeakers that compensate for frequency roll-off.
Our Dodecs also have a special magnet and coil design that enhances low frequency response. They also use built-in electronic adjustments to balance the sound output across different frequencies
All models include an auxiliary input for external signals. A Bluetooth input is also available as an optional feature.