Bosch LBC 3941/11 LBC3941/11 Benutzerhandbuch
Produktcode
LBC3941/11
2 | LBC 3941/11 Sound Projector
Installation/Configuration Notes
The sound projector is supplied with a steel mounting
bracket painted in white. The bracket has three 10 mm
holes, which can be used to easily mount the projector to
walls and ceilings. The direction of the projector can be
adjusted by means of two screws covered with white
plastic covers. The unit is supplied with a 2 m color-coded
five-core cable, with each color connected to a different
primary tap on the matching transformer. This makes it
easy to select full-power, half-power, quarter-power and
eighth-power radiation without opening the unit during
installation.
bracket painted in white. The bracket has three 10 mm
holes, which can be used to easily mount the projector to
walls and ceilings. The direction of the projector can be
adjusted by means of two screws covered with white
plastic covers. The unit is supplied with a 2 m color-coded
five-core cable, with each color connected to a different
primary tap on the matching transformer. This makes it
easy to select full-power, half-power, quarter-power and
eighth-power radiation without opening the unit during
installation.
4
Ω
Circuit diagram
Dimensions in mm (in)
Frequency response
Polar diagram (measured with pink noise)
125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz
SPL 1.1
82
84
83
88
92
88
88
SPL max. 90
92
91
96
100
96
96
Q-factor 1.2
1.2
1.6
2.9
5.1
8.5
18
Efficiency 0.17
0.26
0.16
0.28
0.39
0.09
0.04
H. angle
360
360
360
180
120
90
60
V. angle
360
360
360
180
120
90
60
Acoustical performance specified per octave