Qsources, smart noise and vibration excitation technology
Qsources is a highly specialized company, leading in smart noise and vibration excitation technology.
Qsources products integrate state-of the art driver and sensor technology for highly portable, accurate and very powerful and innovative sound sources. The Infra-Qsources products provide solutions for efficient on-site acoustic testing for the well being in factories, schools, theaters, houses, any working environment. The product range includes lightweight omni-directional sources, low frequency sources and sound power reference sources as well as powerful amplifiers.
Qsources Qohm is an extremely lightweight, high power dodecahedron sound source.
The measurement can be conducted very fast and accurately at high broadband output levels (122 dB Lw). Another advantage of using Qohm is that no subwoofers are needed and it offers the highest quality in material within the smallest dimensions and extremely lightweight. This means that the product can easily be taken on-site by only one single consultant.
Weight | 3.1 kg |
Broadband high output | 122 dB Lw |
The frequency range in third-octave bands | 50-16000 Hz |
Diameter | 260 mm |
Download Qsources Datasheet Qohm
Qsources Qohm2 is a Monopole omnidirectional sound source.
Qohm2 offers a solution to take measurements of room acoustics, reverberation and speech transfer measurements. This solution is perfect for assignments related to the sound quality of buildings such as concert halls, theatres etc. The product offers a lot of benefits compared to currently marketed speakers as its very small, lightweight and is highly accurate at a maximum sound power level of 108 dB.
Weight | 1.3 kg |
Broadband high output | 108 dB Lw |
The frequency range in third-octave bands | 50-16000 Hz |
Diameter | 107mm |
Download Qsources Datasheet Qohm2
Qsources Qref is a monopole sound power reference source.
Qref can be used as a sound reference suitable for identification of equivalent sound power of machinery on-site, Statistical Energy Analysis (SEA) type of measurements of rooms, halls and other acoustically coupled systems and other airborne excitation applications. Qref offers a unique solution to measure in non-ideal acoustic conditions. The shipment includes a dedicated Infra-Qsources QamR amplifier.
Weight | 0.8 kg |
Broadband high output | 97 dB Lw |
The frequency range in third-octave bands | 100-5000 Hz |
Diameter | 107mm |
Download Qsources Datasheet Qref
Qsources Qam is fully DSP Controlled sound power amplifier for noise and vibration measurements with a very high power/ weight ratio for maximum portability and a straightforward, easy to use button operation. It includes an internal white/pink noise signal generator.
Weight | 2.4 kg |
Max. Power output | 1200 Watt |
Frequency range | 20-40000Hz |
Dimensions | 245 x 190 x 90 mm |
Internal noise generator | √ white + pink Noise |
External signal | √ max. 1 Volt pk-pk |
Equalization function | √ |
Download Qsources Datasheet Qam



Qsources Qca is a compact measurement amplifier with high power + low weight.
Weight | 2.4 kg |
Max. Power output | 1200 Watt |
Frequency range | 20-40000Hz |
Dimensions | 245 x 190 x 90 mm |