6
en
LB3-PC250 / LB3-PC350
IN-LB3 | V1.0 | 2011.02
Bosch Security Systems B.V.
Technical data
LB3-PC250 - Octave and 1/3 octave related measure results
Table 1
Octave band opening angles
Table 2
Octave band sensitivity of 250 W / 100 V-tap
Table 3
Total octave SPL
Octave band opening
Frequency (Hz)
125
250
500
1000
2000
4000
8000
Horizontal opening angle
360
183
152
100
77
87
86
Vertical opening angle
360
180
162
70
66
44
32
Octave band sensitivity
Frequency (Hz)
125
250
500
1000
2000
4000
8000
Octave SPL 1 W / 1 m
92.8
93.3
93.6
94.7
97.0
96.8
98.0
Total octave SPL
A-weighted (in dBSPL)
C-weighted (in dBSPL)
Total octave SPL 1 W / 1 m
93.7
95.1
Total octave SPL Pmax / 1 m
117.7
119.1
LB3-PC250 - Frequency and impedance graphs
Frequency response on 0-degrees axis measured with 1 W at 1 m.
Connected to 250 W/100 V-tap and measured with 1/3 octave smoothing.
Frequency
d
B SPL
6 0
7 0
8 0
9 0
10 0
110
10
10 0
100 0
10 00 0
10 0 00 0
