The advantage of ZÖLLNER - Individual solutions

In addition to the normative requirements, certain projects require individual solutions. With our expertise and in close coordination with our customers and partners, we can execute custom requests and modify our products according to customer requirements.

Find your modification options here

Sound pressure level adjustment

Reduced sound pressure levels are no problem for our Makrofons.

We fulfil the requirements of UK standards (GMRT) and Australian standards (AS), among others. We can also find a solution for custom requirements together with our acoustics team.

Alternative frequencies

In addition to the standard 370 Hz and 660 Hz frequencies, it’s our pleasure to offer you other frequencies such as 311 Hz, 470 Hz, and 622 Hz, which are also possible in accordance with TSI.

Our Electrical Makrofon EM660/370 TSI can be loaded with any sound file according to your needs.

Bracket modifications

We meet special installation situations with our different bracket designs.

If we do not have the right mounting bracket in our portfolio yet, we also develop custom brackets that are precisely tailored to your needs.

Colour selection

Our signal horns should also blend harmoniously into the overall appearance of your vehicle. For this reason, we give you the option to select various RAL tones and colour requirements for the funnels of our Makrofons.

Our funnels are produced in RAL 7000 as standard.

Are you looking for an individual solution?

Tell us about your project.


Fon: +49 431 7027 100