8 cm (3.3") ceiling-mounted speaker with white metal  cover (RAL 9010). Suitable for use in all types of hollow ceilings. Easy  fitting in round cut-out using spring arms, electrical connection by  spring-loaded terminal clips. A compact solution for home and  professional use with good sound qualities. 
DL 8 can be supplied painted in other RAL colours on request. 
Typical applications:
- For fitting in hollow ceilings, for music and speech in shops, at home, hotels etc. 
Attributes:
- Moisturised cone
- UV-resistant
- Metal basket, non-corrodible
- 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)
- Ball-resistant
*) IP protection class for front side when built into a sealed enclosure
 
Technical Data:
|  | 
|---|
                                                   | Rated power | 10 W | 
                        | Maximum power | 30 W | 
                                 | Nominal impedance Z | 8 Ohm | 
                        | Sound pressure level | 90 dB (1 W/1 m) @ 6100 Hz
 | 
                             | Frequency response | 90–18000 Hz | 
                                 | Mean sound pressure level | 84 dB (1 W/1 m) | 
                             | Opening angle (-6 dB) | 112°/4000 Hz | 
                                  | Resonance frequency fs | 190 Hz | 
                        | Magnetic induction | 0,7 T | 
                        | Magnetic flux | 130 µWb | 
                        | Height of front pole-plate | 3 mm | 
                        | Voice coil diameter | 20 mm | 
                        | Height of winding | 4 mm | 
                        | Cutout diameter | 93 mm | 
                        | Net weight | 0,33 kg | 
                        | D.C. resistance Rdc | 6,7 Ohm | 
                        | Mechanical Q factor Qms | 2,72 | 
                        | Electrical Q factor Qes | 1,43 | 
                        | Total Q factor Qts | 0,94 | 
                             | Effective piston area Sd | 31 cm² | 
                                  | Inductance of the voice coil L | 0,48 mH | 
                                                                                                                                                                                                  | Length of cable | 0,1 m | 
                        | Protective system | IP 54 *) | 
                         | Temperature range | −40 ... 110 °C | 
                                                           | Colour | RAL 9010 |