Qsources Qohm is an extreme 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 extreme 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
Frequency range in third octave bands 50-16000 Hz
Diameter 260mm


Qsources Qohm2 is a Monopole omni-directional 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
Frequency range in third octave bands 50-16000 Hz
Diameter 107mm


Qsources Qohm72 is an extreme level omni-directional sound source.

Qohm72 features high sound pressure levels for large site testing or other airborne excitation applications such as road- and railway infrastructure and barrier testing. 

Weight 18.5 kg
Broadband high output 140 dB Lw // 100 dB Lw
Frequency range in third octave bands 100 Hz to 16000 Hz // 20 Hz to 160000 Hz
Diameter 530mm


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, hals 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
Frequency range in third octave bands 100-5000 Hz
Diameter 107mm


Qsources Qam is fully DSP Controlled sound power amplifierfor 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


Qsources Qca is a compact measurement amplifier with high power + low weight.

Weight 0.9 kg
Max. Power output 250 Watt
Frequency range 10-50000HZ +0/-3 dB
Dimensions 240 x 105 x 55 mm