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Technical performance acc. to IEC 60268-5
Electrical
Maximum power
Rated power
Sound pressure level
at rated power / 1W (1 kHz, 1 m)
Opening angle at 1 kHz/4 kHz (- 6dB)
horizontal
vertical
Effective freq. range (-10 dB)
Rated voltage
Rated impedance
Connection
Mechanical
Dimensions (H x W x D)
Speaker diameters
Color
Material
Weight
Environmental
Operation temperature
Storage temperature
Relative humidity
Certification and Approvals
Safety
Water protection
Self-extinguishing ABS
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
125
250
Polar diagram horizontal
(measured with pink noise)
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
125
250
Polar diagram vertical
(measured with pink noise)
Bosch Security Systems | 2009-06 | F.01U. 1 34.473en
-
LB1-UM50E-x
75 W
50 W (50 - 25 - 12.5 - 6.25 W)
108 dB / 91 dB
186 / 126 degrees
84 / 62 degrees
90 Hz to 20 kHz
20 / 70 / 100 V
8 / 100 / 200 Ohm
3-pole screw terminal block
405x160x180 mm (15.94x6.29x7.08 in)
134.5 mm (5") woofer
25.4 mm (1") dome tweeter
Charcoal (RAL 7021) (D)
White (RAL 9010) (L)
Aluminium (cabinet and front grille)
ABS (top, and bottom coverplate)
5.58 kg (12.30 lb)
-25 °C to +55 °C (-13 °F to +131 °F)
-40 °C to +70 °C (-40 °F to +158 °F
< 95%
acc. to EN 60065
acc. to EN 60529, IP65
acc. to UL 94 V 0
0
350
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
190
180
BOSCH
500
1000
0
350
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
190
180
BOSCH
500
1000
F
8 ohms
E
6.25W
D
12.5W
(
)
C
25W
B
50W
A
100V
F'
(
)
E'
D'
C'
B'
A'
Circuit diagram
110
100
90
80
70
60
10
100
Frequency response
350
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
190
1000
2000
Polar diagram horizontal
(measured with pink noise)
350
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
190
1000
2000
4000
Polar diagram vertical
(measured with pink noise)
W
8 ohms
6.25W
12.5W
25W
W
50W
70.7V
0
T
C
BOSCH
1000
10000
100000
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
BOSCH
4000
8000
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
BOSCH
8000
(Hz)
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