Euronoise 2018, the 11th European Congress and Exposition on Noise Control Engineering, was held in Crete May 27-31th.

Qsources was present at the Euronoise conference.The event attracted many visitors (>30 national acoustics societes) and many well-known academics gave readings about important and interesting subjects in the field of noise pollution, noise and vibration control, soundscape and other related topics.

Qsources exhibited their latest developments during Euronoise 2018 such as the ‘Qohm2’ monopole omni-directional source and the ‘Qref’ omni-directional reference. The benefits of Qref were well explained at the conference as Dr. Peter J.G. Van der Linden, owner of Qsources, presented the paper written together with Dr. M.C. Morariu of Morariu Consultancy (UK) about using a monopole sound power source to determine machinery sound power where on-site measurements often occur in non-ideal acoustic environments.
The reference power source method is attractive because of limited complexity and time efficiency. It can be applied in any circumstances, even when the acoustic environment is difficult as it improves accuracy and efficiency by using a small and omni-directional reference power source.
the ‘Qref’ can be used as a better alternative to current Power reference sources in machinery as well as room acoustics because it doesn’t require reverberation time.

More information and specifications of the Qref or Qohm2 can be found under the ‘infra-qsources products’ section of our website. If you would like to receive more information about the products or the paper presented during Euronoise, feel free to contact us.
For more information about the event please visit
We hope to see you during the next edition!

Qsources is very proud to announce a new partnership for France.

AllianTech S.A.S will represent Qsources and is authorized to sell all Infra-Qsources products. AllianTech is a leading distributor of instrumentation equipment with offices in Paris and Toulouse and is strengthening its activity in the field of building acoustics. The partnership between AllianTech and Qsources was officially announced November 2017 at the “8es Assises nationales de la qualité de l’environnement sonore” organised by the CidB (Centre d’Information sur le Bruit) in Parc de la Villette in Paris. See the AllianTech team on the photo below. Together we showcased the combination of our Qohm and Qam products. This unique combination provides an extreme lightweight solution for measurements in acoustics and insulation testing.


The latest generation 4 inch drivers has now been build into the new Qohm sources.

The weight is further down to 3.1 Kg.  The specification level is increased also; bringing the sound power level up to 123 dB Lw, and the 50 Hz band level up to 98 dB Lw. These are the highest levels in the industry comparing also to much larger and much heavier products.

With 3.1 kg, or 9.5 kg for the soft bag with all equipment from amplifier to tripod, it means that building acoustics measurements are now possible for anyone to do, and it no longer requires two persons for a measurement campaign.

            160916closeuplogo        160917qohmtripod         160917qohmliftingr


The McGill university in Montreal Canada has a large set of Qohm sources installed with some dedicated equalization equipment.

In the recording research centre at McGill, the very light weight omni-directional sources are used in experiments to influence musicians during their performance recording using replay. And, a set of two of the same Qohm sources are also used when going over the world to investigate the acoustics of large performance sites with exceptional acoustic properties. See the 16 sources suspended over the recording area at McGill in the photo below.