Technical performance acc. to IEC 60268-5 - LB1-UM50E-x
Electrical
Maximum power
75 W
Rated power
50 W (50 - 25 - 12.5 - 6.25 W)
Sound pressure level
at rated power / 1W (1 kHz, 1 m)
108 dB / 91 dB
Opening angle at 1 kHz/4 kHz (- 6dB)
horizontal
186 / 126 degrees
vertical
84 / 62 degrees
Effective freq. range (-10 dB)
90 Hz to 20 kHz
Rated voltage
20 / 70 / 100 V
Rated impedance
8 / 100 / 200 Ohm
Connection
3-pole screw terminal block
Mechanical
Dimensions (H x W x D)
405x160x180 mm (15.94x6.29x7.08 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
5.58 kg (12.30 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
0
10
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
0
10
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)
-30
-25
-20
-15
-10
-5
0
5
0
10
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
0
10
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)
Circuit diagram
6.25W
( )
( )
12.5W
25W
50W
50W
25W
12.5W
6.25W
70.7V
100V
8 ohms
8 ohms
C
0
A
B
C
D
E
F
F'
E'
D'
C'
B'
A'
W
W
T
60
70
80
90
100
110
10
100
1000
10000
100000
(Hz)
dB
S
P
L
BOSCH
Frequency response
Bosch Security Systems | 2009-06 | F.01U.134.473en
