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DK 121 - 8 Ohm

Art. No. 50231

Built-in horn speaker - low profile. Waterproof design with an impedance of 8 ohms. Housing made of black lacquered aluminium, horns made of polypropylene (PP). High IP protection class, high sound pressure and good voice reproduction. Ideal for inconspicuous installation due to the very compact dimensions, e.g. in vehicles. The potential equalisation connection is by means of an M6 grubscrew (including two screws, lock washer and shake-proof washer, maximum fastening torque 2 Nm) on the rear of the housing. The connection is via a two-core flexible cable (250 cm) with insulated flat pin terminals (4.8/0.8 and 2.8/0.8 mm).

Typical applications

  • Outdoor PA at railway-vehicles
  • PA systems in factory halls, railway stations etc.
  • Use in alarm/alert systems


  • Weather-proof aluminum cabinet
  • Plastic-insert-cabinet
  • UV-resistant
*Gross price for private customers. Industrial prices are available on request.
Technical Data
Amplitude & Impendance Frequency
Directivity pattern
Rated power 10 W
Maximum power 15 W
Nominal impedance Z 8 Ohm
Frequency response 570–4400 Hz
Mean sound pressure level 100 dB (1 W/1 m)
Opening angle (-6 dB) 69°/4000 Hz
Net weight 0.65 kg
Sound pressure level 104 dB (1 W/1 m)@ 2947 Hz
Length of cable 2.5 m
Protective system IP 66IP 67
Temperature range −40 ... 85 °C

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