Ceiling speaker with high efficiency  and good speech reproduction. Especially for installation in metal  ceilings (e.g. ships). A push-terminal block allows a quick and easy  connection to the 100-V-network including the eventually necessary level  adjustment. After screwing the speaker to the ceiling a quick-mounting  bayonet connection provides an easy installation of the grille.
Typical applications:
- Installation in metal ceilings
Attributes:
- Functionally at low temperature according to EN 60068-2-1 (-40 °C; 96 h)
- Up to the standards of the Germanischer Lloyd (requirements for electrical equipment / low temperature)
- Moisturised cone
- UV-resistant
- Metal basket
- 100 V transformer
 
Technical Data:
|  | 
|---|
                                                             | Transformer matching | 2; 1; 0,5 W | 
                            | Nominal impedance Z | 5; 10; 20 kOhm | 
                        | Sound pressure level | 102 dB (1 W/1 m) @ 4954 Hz
 | 
                             | Frequency response | 100–15000 Hz | 
                                 | Mean sound pressure level | 94 dB (1 W/1 m) | 
                        | Max. sound pressure level | 97 dB (2 W/1 m) | 
                        | Opening angle (-6 dB) | 55°/4000 Hz | 
                                  | Resonance frequency fs | 150 Hz | 
                                       | Voice coil diameter | 14 mm | 
                             | Cutout diameter | 143 mm | 
                        | Net weight | 1,1 kg | 
                                                                                                                                                                                                                                                          | Temperature range | −40 ... 110 °C | 
                                                           | Colour | RAL 9010 |