Bosch LBC3950/01 Ceiling speaker 6W (plastic mask) F.01U.506.056

Max. power 9 W Rated power 6 / 3 / 1.5 / 0.75 W Sound pressure level at 6 W / 1 W (1 kHz, 1 m) 96 dB / 88 dB (SPL) Sound pressure level at 6 W / 1 W (4 kHz, 1 m) 99 dB / 91 dB (SPL) Effective frequency range (-10 dB) 60Hz to 18kHz At opening angle 1 kHz / 4 kHz (-6 dB) 170° / 90° Rated Voltage 100 V Rated impedance 1667 ohm Connectors 2-pole push-in junction box Diameter 160 mm (6.30 inches) Maximum thickness 95 mm (3.74 inch) Ceiling thickness 9 to 25 mm (0.35 to 0.98 inches) Installation cutout 145 mm (5.71 inches) Speaker diameter 101.6 mm (4 in) Weight 690 g (1.52 lbs) Color White ( RAL 9010) Magnet weight 101 g (3.57 oz) Working temperature -25 ºC to +55 ºC (-13 ºF to +131 ºF) Storage and transportation temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF) Relative Humidity <95%