The document provides specifications for two metal column loudspeakers: the LA1-UM20E-1 and LA1-UM40E-1. Some key details: 1) The loudspeakers are designed for both indoor and outdoor use with IP65 weather protection. 2) They have swivel wall mounts for positioning and robust aluminum construction. 3) The LA1-UM20E-1 has a power rating of 20W and is 450mm tall while the LA1-UM40E-1 is rated at 40W and is 750mm tall.

1. Communications Systems | LA1‑UMx0E‑1 Metal Column Loudspeakers
LA1‑UMx0E‑1 Metal Column Loudspeakers
www.boschsecurity.com
u Good speech intelligibility and background music
reproduction
u For applications where directivity is important
u Slim-line weatherproof design
u Swivel wall mounting bracket supplied as standard
u Robust aluminum construction
The LA1-UM20E-1 and LA1-UM40E-1 metal column system integrity is maintained; ensuring loudspeakers
loudspeakers deliver professional performance from a in other areas can still be used to inform people of the
robust, yet aesthetically designed aluminum enclosure situation.
in a white finish.
Connections and safety
It is an ideal loudspeaker column where sound
The loudspeaker columns have a ceramic terminal
beaming is required, for both indoor and outdoor use
block, thermal fuse, and heat-resistant, high-
in passenger terminals, places of worship, conference
temperature wiring. The column has a provision for
venues, theme parks, swimming pools, factories,
internally mounting the optional line/loudspeaker
exhibition areas.
supervision board.
A swivel wall mounting bracket is supplied as
standard, allowing accurate positioning. Loudspeaker output power setting
Four primary taps are provided on the built‑in
Functions matching transformer. Loudspeaker output power
setting is done on the build-in transformer and
Voice alarm
connected to a rotary vary‑tap switch located in the
Voice alarm loudspeakers are specifically designed for
back of the enclosure to allow simple output power
use in applications, where the performance of
setting. An 8 ohms setting is also provided on the
PA systems is subject to official regulations. The LA1-
rotary vary‑tap switch.
UM20E-1 and LA1-UM40E-1 are designed for voice
alarm systems. Certifications and Approvals
Protection
Both loudspeaker columns have built‑in protection to All Bosch loudspeakers are designed to withstand
ensure that in the event of a fire damage does not operating at their rated power for 100 hours in
cause failure of the connected circuit. In this way, accordance with IEC 268‑5 Power Handling Capacity
(PHC) standards. Bosch has also developed the
Simulated Acoustical Feedback Exposure (SAFE) test
to demonstrate that the speakers can withstand two

2. 2 | LA1‑UMx0E‑1 Metal Column Loudspeakers
times their rated power for short durations. This 84mm 96mm
ensures extra reliability under extreme conditions, 3.3" 3.8"
leading to greater customer satisfaction, longer
operating life, and much less chance of failure or
performance deterioration.
Safety acc. to EN 60065
Emergency acc. to EN 54‑24
acc. to EN 60849
acc. to BS 5839‑8
Water and dust protection acc. to EN 60529 IP 65
Wind‑force Acc. to NEN 6702:2007 + A1: 750mm
2008, Bft11 100mm
29.5"
3.94"
Region Certification
Poland CNBOP
Installation/Configuration Notes
The column loudspeakers can be wall mounted using
the swivel wall bracket standard supplied, or directly
onto a floor stand LBC 1259/01 with an M10 threaded
bolt without additional accessories. The bracket is
attached on a slider, which can be placed and secured
in any desired position along the rear of the enclosure.
Standard supplied with 2 m connection cable, but LA1-UM40E-1 Dimensions mm (in)
these can be replaced during installation with any
other type of connection cable.
The connection cable is fed out through a cable gland
(PG 20) in the top rear of the enclosure. For loop
through connection, a second hole (covered as
standard supplied) is provided.
84mm 96mm
3.3" 3.8"
100mm
3.94"
450mm
17.7"
LA1-UM20E-1 Dimensions mm (in)

3. 3 | LA1‑UMx0E‑1 Metal Column Loudspeakers
LA1-UM20E-1 / LA1-UM40E-1 Rear view
1 = 20W
1/2 = 10W 8Ω
1/4 = 5W 8Ω 8Ω
1/8 = 2.5W
1/8
1/4 1/8
1/2 1/4
1 1/2 8Ω 8Ω
1
100V 70.7V
A
B
LA1-UM20E-1 Circuit diagram (A: Phase, B: Common)
1 = 40W
1/2 = 20W 4Ω 4Ω
8Ω
1/4 = 10W
1/8 = 5W
1/8
1/4 1/8
1/2 1/4
1 1/2 4Ω 4Ω
1
100V 70.7V
A
B
4Ω 4Ω
4Ω 4Ω
LA1-UM40E-1 Circuit diagram (A: Phase, B: Common)
7 mm
(0.82")
55 mm (2.17")
100 mm (3.94")
Details mounting bracket
110
dB SPL
BOSCH
100
90
80
70
60
10 100 1000 10000 100000
LA1-UM20E-1 Frequency response

4. 4 | LA1‑UMx0E‑1 Metal Column Loudspeakers
110 350 0 10
20
dB SPL
340 5
BOSCH 30
330
100
320 0 40
90 310 -5 50
300 -10 60
80
290 -15 70
70 -20
280 80
60 -25
10 100 1000 10000 100000 270 90
-30
LA1-UM40E-1 Frequency response 260 100
250 11
350 0 10
340 20 240 120
5 30
330
230 130
320 0 40
310 -5 50 220 140
210 150
300 -10 60 200 160
190 180 170
290 -15 70
-20
280 80 125 250 500 1000
-25
270 90
-30
260 100
350 0 10
250 110 340 20
5
330 30
240 120
320 0 40
230 130
310 -5 50
220 140
210 150 300 -10 60
200 160
190 180 170 -15
290 70
-20
280 80
125 250 500 1000 -25
270 90
-30
260 100
350 0 10
340 5 20
330 30 250 11
320 0 40
50 240 120
310 -5
-10 60 230 130
300
-15 220 140
290 70
-20 210 150
280 80 200 160
190 180 170
-25
270 90
-30
260 100 1000 2000 4000 8000
11
LA1-UM20E-1 Polar diagram (vertical)
250
240 120
230 130
220 140
210 150
200 160
190 180 170
1000 2000 4000 8000
LA1-UM20E-1 Polar-diagram (horizontal)

5. 5 | LA1‑UMx0E‑1 Metal Column Loudspeakers
350 0 10 0
340 20 350 10
5 340 20
330 30 5
330 30
320 0 40 320 0 40
310 -5 50 310 -5 50
300 -10 60 300 -10 60
-15 -15
290 70 290 70
-20 -20
280 80 280 80
-25 -25
270 90 270 90
-30 -30
260 100 260 100
250 11 250 11
240 120 240 120
230 130 230 130
220 140 220 140
210 150 210 150
200 160 200 160
190 180 170 190 180 170
125 250 500 1000 125 250 500 1000
350 0 10 350 0
20 10
340 5 340 5 20
330 30 330 30
320 0 40 320 0 40
310 -5 50 310 -5 50
300 -10 60 300 -10 60
-15 -15
290 70 290 70
-20 -20
280 80 280 80
-25 -25
270 90 270 90
-30 -30
260 100 260 100
250 110 250 11
240 120 240 120
230 130 230 130
220 140 220 140
210 150 210 150
200 160 200 160
190 180 170 190 170
1000 2000 4000 8000 1000 2000 4000 8000
LA1-UM40E-1 Polar diagram (horizontal) LA1-UM40E-1 Polar diagram (vertical)
Octave band sensitivity LA1-UM20E-1
Octave SPL Total octave Total octave
1W/1m SPL SPL
1W/1m Pmax/1m
125 Hz 75.9 - -
250 Hz 82.9 - -
500 Hz 88.7 - -
1000 Hz 91.5 - -
2000 Hz 93.9 - -
4000 Hz 94.5 - -
8000 Hz 89.6 - -
A-weighted - 89.7 101.5
Lin-weighted - 89.6 101.6
Octave band opening angles LA1-UM20E-1
Horizontal Vertical
125 Hz 360 >180

6. 6 | LA1‑UMx0E‑1 Metal Column Loudspeakers
250 Hz 360 >180 Technical Specifications
500 Hz 360 160 Electrical*
1000 Hz 210 80 Description LA1-UM20E-1 LA1-UM40E-1
2000 Hz 148 43 Maximum power 30 W 60 W
4000 Hz 94 22 Rated power (PHC) 20 W 40 W
8000 Hz 95 10 Power tapping 20 / 10 / 5 / 2.5 40 / 20 / 10 / 5
W W
Octave band sensitivity LA1-UM40E-1
Sound pressure level at 105 / 92 dB 111 / 95 dB
Octave SPL Total octave Total octave rated power / 1 W (1 kHz, (SPL) (SPL)
1W/1m SPL SPL 1 m)
1W/1m Pmax/1m
Sound pressure level at 108 / 95 dB 114 / 98 dB
125 Hz 78.5 - - rated power / 1 W (4 kHz, (SPL) (SPL)
1 m)
250 Hz 86.7 - -
Effective frequency range 240 Hz to 16 kHz 250 Hz to 16 kHz
500 Hz 92.2 - - (-10 dB)
1000 Hz 95.2 - - Horizontal opening angle 210°/ 94° 210°/ 92°
at 1 kHz / 4 kHz (-6 dB)
2000 Hz 97.4 - -
Vertical opening angle 80°/ 22° 40°/ 12°
4000 Hz 97.8 - - at 1 kHz / 4 kHz (-6 dB)
8000 Hz 90.7 - - Rated input voltage 12.65/70/100 V 17.89/70/100 V
A-weighted - 93.0 107.6 Rated impedance 8/251/500 ohm 8/125/250 ohm
Lin-weighted - 92.3 107.5 * Technical performance data acc. to IEC 60268‑5
Mechanical
Octave band opening angles LA1-UM40E-1
LA1-UM20E-1 LA1-UM40E-1
Horizontal Vertical
Dimensions (L x W x D) 450 x 84 x 96 m 750 x 84 x 96 m
125 Hz 360 >180
m m
250 Hz 360 >180 (17.7 x3.3 x 3.8 i (29.5 x3.3 x 3.8
n) in)
500 Hz 360 82
Weight 2.9 kg (6.4 lb) 4.4 kg (9.7 lb)
1000 Hz 210 40
Color White White
2000 Hz 146 22 (RAL 9010) (RAL 9010)
4000 Hz 92 12 Material (housing and grille) Extruded Extruded
aluminum / steel aluminum / steel
8000 Hz 97 6
Connection 2 m (78.8 in) 2 m (78.8 in)
Acoustical performance specified per octave * (all 3-wire cable 3-wire cable
measurements are done with a pink noise signal; the
values are in dBSPL). Connector 3‑pole screw 3‑pole screw
(phase, common, earth) block block
Parts Included
Environmental
Quantity Components
Operating temperature -25 ºC to +55 ºC (-13 ºF to +131 ºF)
1 LA1‑UMx0E-1 Metal Column loudspeaker
Storage temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF)
1 Wall mounting bracket
Relative humidity <95%
1 Installation instruction Other parameters are available in CNBOP test report
nr 4789/BA/10.

7. 7 | LA1‑UMx0E‑1 Metal Column Loudspeakers
1438
Bosch Security Systems BV
Kapittelweg 10, 4827 HG Breda, The Netherlands
10
1438-CPD-0203
EN 54-24:2008
Loudspeaker for voice alarm systems
for fire detection and fire alarm systems for buildings
Metal Column 20 W and 40 W
LA1-UM20E-1 and LA1-UM40E-1
Type B
Ordering Information
LA1‑UM20E‑1 Metal Column Loudspeaker
20 W
Order number LA1-UM20E-1
LA1‑UM40E‑1 Metal Column Loudspeaker
40 W
Order number LA1-UM40E-1
Represented by:
Americas: Europe, Middle East, Africa: Asia-Pacific:
Bosch Communications Systems Bosch Security Systems B.V. Robert Bosch (SEA) Pte Ltd
12000 Portland Avenue South P.O. Box 80002 11 Bishan Street 21
Burnsville, Minnesota 55337, USA 5600 JB Eindhoven, The Netherlands Singapore 573943
Phone: +1-800-392-3497 Phone: + 31 40 2577 284 Phone: +65 6571 2600
Fax: +1-800-955-6831 Fax: +31 40 2577 330 Fax: +65 6571 2698
audiosupport@us.bosch.com emea.securitysystems@bosch.com apr.securitysystems@bosch.com
www.boschsecurity.com www.boschsecurity.com www.boschsecurity.com
© Bosch Security Systems 2012 | Data subject to change without notice
1911738379 | en, V1, 16. Apr 2012