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Makrofon ZM75/660 (AS7532 / Country Warning Device)

Zöllner Makrofons are compressed air-operated diaphragm sound emitters on rail vehicles for emitting acoustic signals in rail transport. Sound is generated by a diaphragm, which is clamped into the housing by two O-rings.

Because every detail matters

Technical data
  • Type: ZM75/660
  • Standard: Customized requirement (AS7532 / Country Warning Device)
  • Frequency: 660 Hz ± 30 Hz
  • Sound level within 1 m distance: 137 - 141 dB(A)
  • Sound level within 30 m distance: > 106 dB(A)
  • Operating pressure: 5 - 10 bar
  • Air flow: 525 l/min. - 8 bar
  • Weight: approx. 1.6 kg
More information

Optional modifications for this product

Sound pressure level

The sound pressure level of our Makrofons can be reduced according to your requirements.

Bracket modification

We cover special installation situations with our different mounting bracket designs.

Colour selection

You can select between various RAL tones and colour requirements for the funnels of our Makrofons.