
LC1 Modular Ceiling Loudspeaker Range
LC1
en Product Information & Installation Manual

LC1 Modular Ceiling Loudspeaker Range Table of Contents | en 3
Table of Contents
1System Overview 4
1.1 Housings 4
1.2 Loudspeakers 4
1.3 Accessories 5
2 Installation 6
2.1 LC1-MMSB 6
2.2 LC1-CMR/LC1-CBB 9
2.3 LC1-MFD 12
2.4 LC1-CSMB 15
3 Technical Data 18
3.1 Electrical 18
3.2 Mechanical 19
3.3 Environmental conditions 20
3.4 Standards 21
3.5 Additional technical data 22
3.5.1 LC1-WC06E8 22
3.5.2 LC1-WM06E8 24
3.5.3 LC1-UM06E8 26
3.5.4 LC1-UM12E8 28
3.5.5 LC1-UM24E8 30
3.6 EC declaration of conformity 32
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

4 en | System Overview LC1 Modular Ceiling Loudspeaker Range
LC1-MFDLC1-CMR / LC1-CBB
LC1-MMSB
LC1-CSMB
LC1-MFD
LC1-CMR / LC1-CBB
LC1-MMSB
LC1-CSMB
Pilot tone
indication board:
LC1-PIB
Line/loudspeaker
Supervision Boards:
LBB 4441/00
LBB 4442/00
LBB 4443/00
LC1-WC06E8
LC1-UM12E8
LC1-UM24E8
LC1-UM06E8
LC1-WM06E8
1 System Overview
1.1 Housings
NOTICE!
To be compliant with UL-1480 the loudspeaker must be installed with the LC1-CMR including
LC1-CBB or LC1-MFD or LC1-CSMB.
1.2 Loudspeakers
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range System Overview | en 5
LC1-MFD
LC1-CMR / LC1-CBB
LC1-MMSB
LM1-TB
1.3 Accessories
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

6 en | Installation LC1 Modular Ceiling Loudspeaker Range
190 mm190 mm
(7.48 in)(7.48 in)
2 Installation
2.1 LC1-MMSB
Fig. 1 Fig. 2
Fig. 3 Fig. 4
5
Fig. 5 Fig. 6
Optional
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Installation | en 7
0.5 mm² / 3 mm²
AWG 20 / AWG 13
Max.
50 mm
(1.97 in)
Fig. 7 Fig. 8
1
2
Fig. 9 Fig. 10
Optional
Pilot tone indication board: LC1-PIB
Notice! Push until you hear a click.
Fig. 11 Fig. 12
Optional
Line/Loudspeaker supervision boards:
LBB 4441/00, LBB 4442/00, LBB 4443/00
LC1-PIB
MIN / MAX
0.5 mm² / 3 mm²
AWG 20 / AWG 13
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

8 en | Installation LC1 Modular Ceiling Loudspeaker Range
24W
100V
70V
C
0
24W
3W
6W
12W
24W
3W
6W
12W
4Ω
12W
100V
70V
C
0
12W
1.5W
3W
6W
12W
1.5W
3W
6W
4Ω
6W
100V
70V
C
0
6W
0.75W
1.5W
3W
6W
0.75W
6W
3W
4Ω
+
0
+
0
+
0
Fig. 13
Notice! Standard connected to rated power at 100V
1
2
Fig. 14 Fig. 15
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Installation | en 9
200 mm200 mm
(7.88 in)(7.88 in)
2.2 LC1-CMR/LC1-CBB
Fig. 1 Fig. 2
Fig. 3 Fig. 4
Fig. 5
Fig. 6
Optional
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

10 en | Installation LC1 Modular Ceiling Loudspeaker Range
0.5 mm² / 3 mm²
AWG 20 / AWG 13
Max.
25 mm
(0.98 in)
1
2
Fig. 7 Fig. 8
Optional
Pilot tone indication board: LC1-PIB
Notice! Push until you hear a click.
Fig. 9 Fig. 10
Optional
Line/Loudspeaker supervision boards:
LBB 4441/00, LBB 4442/00, LBB 4443/00
MIN / MAX
0.5 mm² / 3 mm²
AWG 20 / AWG 13
LC1-PIB
Fig. 11
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Installation | en 11
24W
100V
70V
C
0
24W
3W
6W
12W
24W
3W
6W
12W
4Ω
12W
100V
70V
C
0
12W
1.5W
3W
6W
12W
1.5W
3W
6W
4Ω
6W
100V
70V
C
0
6W
0.75W
1.5W
3W
6W
0.75W
6W
3W
4Ω
+
0
+
0
+
0
Fig. 12
Notice! Standard connected to rated power at 100V
1
2
Fig. 13 Fig. 14
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

12 en | Installation LC1 Modular Ceiling Loudspeaker Range
190 mm190 mm
(7.48 in)(7.48 in)
2.3 LC1-MFD
Fig. 1 Fig. 2
Fig. 3 Fig. 4
Fig. 5 Fig. 6
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Installation | en 13
Fig. 7
Optional
Max.
50 mm
(1.97 in)
1
Fig. 8
Notice! Push until you hear a click.
1
2
2
Fig. 9 Fig. 10
Optional
Pilot tone indication board: LC1-PIB
Notice! Push until you hear a click.
Fig. 11
Optional
Line/Loudspeaker supervision boards:
LBB 4441/00, LBB 4442/00, LBB 4443/00
Fig. 12
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

14 en | Installation LC1 Modular Ceiling Loudspeaker Range
Fig. 13
Optional
+
0
C
6W
0
0.75W
1.5W
6W
3W
6W
3W
0.75W
100V
70V
4Ω
6W
+
0
Fig. 15
Notice! Standard connected to rated power at 100V
Fig. 14
+
0
12W
6W
1.5W
3W
6W
3W
1.5W
100V
70V
4Ω
C
12W
0
12W
C
24W
12W
3W
6W
24W
12W
6W
0
100V
3W
70V
4Ω
24W
1
2
Fig. 16 Fig. 17
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Installation | en 15
2.4 LC1-CSMB
Fig. 1 Fig. 2
Fig. 3 Fig. 4
1
2
Fig. 5
Optional
Pilot tone indication board: LC1-PIB
Notice! Push until you hear a click.
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04
Fig. 6
Optional
Line/Loudspeaker supervision boards:
LBB 4441/00, LBB 4442/00, LBB 4443/00

16 en | Installation LC1 Modular Ceiling Loudspeaker Range
0.5 mm² / 3 mm²
AWG 20 / AWG 13
MIN / MAX
0.5 mm² / 3 mm²
AWG 20 / AWG 13
LC1-PIB
Fig. 7 Fig. 8
+
0
C
6W
0
0.75W
1.5W
6W
3W
6W
3W
0.75W
100V
70V
4Ω
+
0
6W
Fig. 9
Notice! Standard connected to rated power at 100V
+
0
12W
6W
1.5W
3W
6W
3W
1.5W
100V
70V
4Ω
C
12W
0
12W
C
24W
12W
3W
6W
24W
12W
6W
0
100V
3W
70V
4Ω
24W
1
2
Fig. 10 Fig. 11
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Installation | en 17
Fig. 12
Optional
Fig. 14
Optional
Fig. 13
Optional
LC1 MSK
Fig. 15
Optional
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

18 en | Technical Data LC1 Modular Ceiling Loudspeaker Range
3 Technical Data
3.1 Electrical
LC1-WC06E8 LC1-WM06E8 LC1-UM06E8
Description Ceiling loudspeaker Ceiling loudspeaker Ceiling loudspeaker
Maximum power 9 W 9 W 9 W
Rated power 6 W (6-3-1.5-0.75 W) 6 W (6-3-1.5-0.75 W) 6 W (6-3-1.5-0.75 W)
Sound pressure level at
rated power / 1 W
(1 kHz, 1 m)
Opening angle at
1 kHz / 4 kHz (-6 dB)
Effective frequency
range (-10 dB)
Rated voltage 70/100 V 70/100 V 70/100 V
Rated impedance 835/1667 Ohm 835/1667 Ohm 835/1667 Ohm
Connector 3 pole screw terminal
96 dB / 88 dB 96 dB / 88 dB 97 dB / 89 dB
180/75° 180/128° 180/62°
85 Hz to 20 kHz 85 Hz to 20 kHz 70 Hz to 20 kHz
block
3 pole screw terminal
block
3 pole screw terminal
block
LC1-UM12E8 LC1-UM24E8
Description Ceiling loudspeaker Ceiling loudspeaker
Maximum power 18 W 36 W
Rated power 12 W (12-6-3-1.5 W) 24 W (24-12-6-3 W)
Sound pressure level at
rated power / 1 W
(1 kHz, 1 m)
Opening angle at
1 kHz / 4 kHz (-6 dB)
Effective frequency
range (-10 dB)
Rated voltage 70/100 V 70/100 V
Rated impedance 418/833 Ohm 208/417 Ohm
Connector 3 pole screw terminal
Technical performance according to IEC 60268-5
100 dB / 89 dB 103 dB / 89 dB
180/64° 180/58°
55 Hz to 20 kHz 55 Hz to 20 kHz
3 pole screw terminal
block
block
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Technical Data | en 19
3.2 Mechanical
LC1-WC06E8 LC1-WM06E8 LC1-UM06E8
Description Ceiling loudspeaker Ceiling loudspeaker Ceiling loudspeaker
Diameter 220 mm (8.67 in) 220 mm (8.67 in) 220 mm (8.67 in)
Maximum depth
(including LC1-MMSB)
Mounting cut-out 190 mm (7.48 in) 190 mm (7.48 in) 190 mm (7.48 in)
Color White (RAL 9010) White (RAL 9010) White (RAL 9010)
Material
(frame and front grille)
Weight 0.82 kg (1.80 lb) 1.18 kg (2.60 lb) 1.16 kg (2.56 lb)
Description Ceiling loudspeaker Ceiling loudspeaker
Diameter 220 mm (8.67 in) 220 mm (8.67 in)
Maximum depth
(including LC1-MMSB)
Mounting cut-out 190 mm (7.48 in) 190 mm (7.48 in)
Color White (RAL 9010) White (RAL 9010)
Material
(frame and front grille)
Weight 1.30 kg (2.86 lb) 1.75 kg (3.86 lb)
125 mm (4.92 in) 125 mm (4.92 in) 125 mm (4.92 in)
ABS Steel Steel
LC1-UM12E8 LC1-UM24E8
125 mm (4.92 in) 125 mm (4.92 in)
Steel Steel
LC1-MMSB LC1-CMR LC1-CBB
Description Mounting support bracket Ceiling mounting ring Back box
Dimensions 215 x 125 x 56 mm
(8.47 x 4.92 x 2.2 in)
Mounting cut-out 190 mm (7.48 in) 200 mm (7.88 in) -
Color Zinc plated White (RAL 9010) White (RAL 9010)
Material Steel ABS ABS
Weight 0.32 kg (0.70 lb) 0.21 kg (0.46 lb) 0.17 kg (0.38 lb)
LC1-MFD LC1-CSMB LC1-MSK
Description Metal fire-dome Surface mounting box Metal suspension kit
Dimensions 215 x 155 mm
(8.47 x 6.1 in)
Mounting cut-out 190 mm (7.48 in) - -
Color Flame red (RAL 3000) White (RAL 9010) Zinc plated
Material Steel ABS Steel
Weight 1.00 kg (2.20 lb) 0.69 kg (1.52 lb) 0.17 kg (0.38 lb)
215 x 70 mm
(8.47 x 2.75 in)
220 x 128 mm
(8.67 x 5.04 in)
196 x 70 mm
(7.72 x 2.75 in)
320 mm (12.59 in)
(chain length)
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

20 en | Technical Data LC1 Modular Ceiling Loudspeaker Range
LC1-TB LC1-PIB
Description Tile bridge/C-ring Pilot tone indication board
Dimensions Tile bridge: 643 x 34 mm
(25.33 x 1.34 in)
C-ring: 250 x 30 mm
(9.85 x 1.18 in)
Mounting cut-out - -
Color Zinc plated -
Material Steel -
Weight 0.94 kg (2.07 lb) 0.003 kg (0.006 lb)
20 x 30 mm
(0.78 x 1.18 in)
3.3 Environmental conditions
LC1-WC06E8 LC1-WM06E8 LC1-UM06E8
Description Ceiling loudspeaker Ceiling loudspeaker Ceiling loudspeaker
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% < 95% < 95%
-25 °C to +55 °C
(-13 °F to +131 °F)
-40 °C to +70 °C
(-40 °F to +158 °F)
-25 °C to +55 °C
(-13 °F to +131 °F)
-40 °C to +70 °C
(-40 °F to +158 °F)
LC1-UM12E8 LC1-UM24E8
Description Ceiling loudspeaker Ceiling loudspeaker
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% < 95%
-25 °C to +55 °C
(-13 °F to +131 °F)
-40 °C to +70 °C
(-40 °F to +158 °F)
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Technical Data | en 21
3.4 Standards
LC1-WC06E8 LC1-WM06E8 LC1-UM06E8
Description Ceiling loudspeaker Ceiling loudspeaker Ceiling loudspeaker
Safety EN 60065 EN 60065 EN 60065
Emergency* BS5839 part 8, EN 60849,
EN 54-24
Water and dust
protection**
Salt mist*** IEC 68-2-11Ka - -
Chlorine resistant IEC 60068/2-60 - -
* only in combination with the LC1-MFD Fire Dome or LC1-CMR including LC1-CBB
** only in combination with the LC1-MFD Fire Dome or LC1-CMR including LC1-CBB
***only in combination with LC1-CMR including LC1-CBB
Description Ceiling loudspeaker Ceiling loudspeaker
Safety EN 60065 EN 60065
Emergency BS5839 part 8, EN 60849,
EN 60529 IP 33 - -
LC1-UM12E8 LC1-UM24E8
EN 54-24
BS5839 part 8, EN 60849,
EN 54-24
BS5839 part 8, EN 60849,
EN 54-24
BS5839 part 8, EN 60849,
EN 54-24
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

22 en | Technical Data LC1 Modular Ceiling Loudspeaker Range
220 mm (8.67 in)
39 mm (1.53 in)
23 mm (0.9 in)
62 mm (2.44 in)
Common
Phase
Earth
Common
4
6W
3W
1.5W
0.75W
-
70V
-W
6W
3W
1.5W
0.75W
100V
Octave band sensitivity
All measurements are done with a pink noise signal. The values are in dBSPL
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz A-weighted lin-weighted
Octave SPL 1W/1m 85.3 88.3 87.5 88.4 93.4 93.8 88.0
Total octave SPL 1W/1m 89.0 89.7
Total octave SPL Pmax/1m 106.2 107.1
Octave band opening angles
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
Horizontal opening angle 180 180 180 180 180 75 96
Vertical opening angle 180 180 180 180 180 75 96
3.5 Additional technical data
3.5.1 LC1-WC06E8
Dimensions
Circuit diagram
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Technical Data | en 23
60
70
80
90
100
110
10
100
1000
1000 1000010000
100000
Frequency (Hz)
dB SPL
125 250 500 1000
-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 80 00
-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
Frequency response
Polar diagrams
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

24 en | Technical Data LC1 Modular Ceiling Loudspeaker Range
220 mm (8.67 in)
43 mm (1.69 in)
23 mm (0.9 in)
66 mm (2.59 in)
Common
Phase
Earth
Common
4
6W
3W
1.5W
0.75W
-
70V
-W
6W
3W
1.5W
0.75W
100V
Octave band sensitivity
All measurements are done with a pink noise signal. The values are in dBSPL
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz A-weighted lin-weighted
Octave SPL 1W/1m 83.4 86.1 85.1 87.8 91.2 89.7 89.3
Total octave SPL 1W/1m 86.9 88.1
Total octave SPL Pmax/1m 94.2 94.9
Octave band opening angles
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
Horizontal opening angle 180 180 180 180 120 128 75
Vertical opening angle 180 180 180 180 120 128 75
3.5.2 LC1-WM06E8
Dimensions
Circuit diagram
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Technical Data | en 25
60
70
80
90
100
110
10 100 1000 10000 100000
Frequency (Hz)
dB SPL
BOSCH
-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
-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
Frequency response
Polar diagrams
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

26 en | Technical Data LC1 Modular Ceiling Loudspeaker Range
98.5 mm (3.87 in)
23 mm (0.9 in)
220 mm (8.67 in)
121.5 mm (4.78 in)
Common
Phase
Earth
Common
4
6W
3W
1.5W
0.75W
-
70V
-W
6W
3W
1.5W
0.75W
100V
Octave band sensitivity
All measurements are done with a pink noise signal. The values are in dBSPL
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz A-weighted lin-weighted
Octave SPL 1W/1m 93.4 88.4
86.3
88.5 91.4 93.9 92.6
Total octave SPL 1W/1m 88.9 90.4
Total octave SPL Pmax/1m 95.8 96.5
Octave band opening angles
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
Horizontal opening angle 180 180 180 180 108 62 38
Vertical opening angle 180 180 180 180 108 62 38
60
70
80
90
100
110
10 100 1000 10000 100000
Frequency (Hz)
dB SPL
BOSCH
3.5.3 LC1-UM06E8
Dimension
Circuit diagram
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Technical Data | en 27
-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
-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
Frequency reponse
Polar diagrams
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

28 en | Technical Data LC1 Modular Ceiling Loudspeaker Range
106 mm (4.17 in)
23 mm (0.9 in)
220 mm (8.67 in)
129 mm (5.07 in)
Common
Phase
Earth
Common
4
12W
6W
3W
1.5W
-
70V
-W
12W
6W
3W
1.5W
100V
Octave band sensitivity
All measurements are done with a pink noise signal. The values are in dBSPL
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz A-weighted lin-weighted
Octave SPL 1W/1m 89.4 87.3 86.5 88.6 90.0 94.0 93.7
Total octave SPL 1W/1m 88.9 90.3
Total octave SPL Pmax/1m 99.3 100.2
Octave band opening angles
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
Horizontal opening angle 180 180 180 180 108 64 62
Vertical opening angle 180 180 180 180 108 64 62
3.5.4 LC1-UM12E8
Dimensions
Circuit diagram
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Technical Data | en 29
60
70
80
90
100
110
10 100 1000 10000 100000
Frequency (Hz)
dB SPL
-30
-25
-20
-15
-10
-5
0
5
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
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
1000 2000 4000 8000
Frequency response
Polar diagrams
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

30 en | Technical Data LC1 Modular Ceiling Loudspeaker Range
220 mm (8.67 in)
112 mm (4.40 in)
23 mm (0.9 in)
135 mm (5.31 in)
Common
Phase
Earth
Common
24W
12W
6W
3W
-
70V
-W
24W
12W
6W
3W
100V
4
Octave band sensitivity
All measurements are done with a pink noise signal. The values are in dBSPL
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz A-weighted lin-weighted
Octave SPL 1W/1m 89.9 88.3 89.0 88.6 91.5 95.6 93.8
Total octave SPL 1W/1m 90.0 91.3
Total octave SPL Pmax/1m 103.1 103.8
Octave band opening angles
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
Horizontal opening angle 180 180 180 180 106 58 57
Vertical opening angle 180 180 180 180 106 58 57
3.5.5 LC1-UM24E8
Dimensions
Circuit diagram
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

LC1 Modular Ceiling Loudspeaker Range Technical Data | en 31
60
70
80
90
100
110
10 100 1000 10000 100000
Frequency (Hz)
dB SPL
BOSCH
-3 0
-2 5
-2 0
-1 5
-1 0
-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 50 0 1000
-3 0
-2 5
-2 0
-1 5
-1 0
-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 40 00 8000
Frequency response
Polar diagrams
Bosch Security Systems B.V. Product Information & Installation Manual F.01U.076.021 | V1.0 | 2012.04

32 en | Technical Data LC1 Modular Ceiling Loudspeaker Range
Bosch Security Systems BV
Torenallee 49, 5617 BA Eindhoven
1438-CPD-0194
1438
Loudspeaker for voice alarm systems
for fire detection and fire alarm systems for buildings
EN 54-24:2008
Ceiling loudspeakers 6 W, 12 W, 24 W and accessories
LC1-WM06E8, LC1-UMxxE8, LC1-MFD, LC1-MMSB, LC1-CMR,
LC1-CBB, LC1-CSMB, LC1-MSK.
Type A
3.6 EC declaration of conformity
F.01U.076.021 | V1.0 | 2012.04 Product Information & Installation Manual Bosch Security Systems B.V.

Bosch Security Systems B.V.
Torenallee 49
5617 BA Eindhoven
The Netherlands
www.boschsecurity.com
© Bosch Security Systems B.V., 2012