Bosch Security Systems | 2009-06 | F.01U.134.473en
Technical performance acc. to IEC 60268-5 - LB1-UM20E-x
Electrical
Maximum power 30 W
Rated power 20 W (20 - 10 - 5 - 2.5 W)
Sound pressure level
at rated power / 1W (1 kHz, 1 m) 101 dB / 88 dB
Opening angle at 1 kHz/4 kHz (-6 dB)
horizontal 174 / 136 degrees
vertical 127 / 141 degrees
Effective freq. range (-10 dB) 90 Hz to 20 kHz
Rated voltage 12.65 / 70 / 100 V
Rated impedance 8 / 250 / 500 Ohm
Connection 3-pole screw terminal block
Mechanical
Dimensions (H x W x D) 274x160x180 mm (10.78x6.29x7.08 in)
Speaker diameters 134.5 mm (5”) woofer
25.4 mm (1”) dome tweeter
Color Charcoal (RAL 7021) (D)
White (RAL 9010) (L)
Material Aluminium (cabinet and front grille)
ABS (top, and bottom coverplate)
Weight 3.88 kg (8.55 lb)
Environmental
Operation temperature -25 °C to +55 °C (-13 °F to + 131 °F)
Storage temperature -40 °C to +70 °C (-40 °F to + 158 °F
Relative humidity < 95%
Certification and Approvals
Safety acc. to EN 60065
Water protection acc. to EN 60529, IP65
Self-extinguishing ABS acc. to UL 94 V 0
-30
-25
-20
-15
-10
-5
0
5
010 20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340 350
125 250 500 1000
BOSCH
Polar diagram horizontal
(measured with pink noise)
-30
-25
-20
-15
-10
-5
0
5
010 20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340 350
125 250 500 1000
BOSCH
Polar diagram vertical
(measured with pink noise)
-30
-25
-20
-15
-10
-5
0
5
010 20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340 350
1000 2000 4000 8000
BOSCH
Polar diagram horizontal
(measured with pink noise)
-30
-25
-20
-15
-10
-5
0
5
010 20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340 350
1000 2000 4000 8000
BOSCH
Polar diagram vertical
(measured with pink noise)
60
70
80
90
100
110
10 100 1000 10000 100000
(Hz)
dB SPL
BOSCH
Frequency response
Circuit diagram
2.5W
( )
( )
5W
10W
20W
20W
10W
5W
2.5W
70.7V100 V
8 ohms
8 ohms
W
T
C
0
A
B
C
D
E
F
F'
E'
D'
C'
B'
A'