Bosch F.01U.141.639 Datasheet
Communications Systems | LA1 UMx0E 1 Metal Column Loudspeakers
LA1 UMx0E 1 Metal Column Loudspeakers
www.boschsecurity.com
The LA1-UM20E-1 and LA1-UM40E-1 metal column loudspeakers deliver professional performance from a robust, yet aesthetically designed aluminum enclosure in a white finish.
It is an ideal loudspeaker column where sound beaming is required, for both indoor and outdoor use in passenger terminals, places of worship, conference venues, theme parks, swimming pools, factories, exhibition areas.
A swivel wall mounting bracket is supplied as standard, allowing accurate positioning.
Functions
Voice alarm
Voice alarm loudspeakers are specifically designed for use in applications, where the performance of
PA systems is subject to official regulations. The LA1- UM20E-1 and LA1-UM40E-1 are designed for voice alarm systems.
Protection
Both loudspeaker columns have built in protection to ensure that in the event of a fire damage does not cause failure of the connected circuit. In this way,
uGood speech intelligibility and background music reproduction
uFor applications where directivity is important
uSlim-line weatherproof design
uSwivel wall mounting bracket supplied as standard
uRobust aluminum construction
system integrity is maintained; ensuring loudspeakers in other areas can still be used to inform people of the situation.
Connections and safety
The loudspeaker columns have a ceramic terminal block, thermal fuse, and heat-resistant, hightemperature wiring. The column has a provision for internally mounting the optional line/loudspeaker supervision board.
Loudspeaker output power setting
Four primary taps are provided on the built in matching transformer. Loudspeaker output power setting is done on the build-in transformer and connected to a rotary vary tap switch located in the back of the enclosure to allow simple output power setting. An 8 ohms setting is also provided on the rotary vary tap switch.
Certifications and approvals
All Bosch loudspeakers are designed to withstand operating at their rated power for 100 hours in 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 | LA1 UMx0E 1 Metal Column Loudspeakers
times their rated power for short durations. This ensures extra reliability under extreme conditions, leading to greater customer satisfaction, longer operating life, and much less chance of failure or performance deterioration.
Safety |
acc. to EN 60065 |
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Emergency |
acc. to EN 54 24 |
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acc. to EN 60849 |
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acc. to BS 5839 8 |
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Water and dust protection |
acc. to EN 60529 IP 65 |
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Wind force |
Acc. to NEN 6702:2007 + A1: |
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2008, Bft11 |
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Region Certification
Poland CNBOP
Europe CPD
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 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"
84MM |
96MM |
3.3" |
3.8" |
750MM |
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100MM |
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29.5" |
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3.94" |
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LA1-UM40E-1 Dimensions mm (in)
LA1-UM20E-1 Dimensions mm (in)
3 | LA1 UMx0E 1 Metal Column Loudspeakers
LA1-UM20E-1 / LA1-UM40E-1 Rear view
1 = 20W 1/2 = 10W 1/4 = 5W 1/8 = 2.5W
A
B
8Ω
1/8
1/4 1/8
1/2 1/4
11/2
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1 |
100V |
70.7V |
8Ω |
8Ω |
8Ω |
8Ω |
LA1-UM20E-1 Circuit diagram (A: Phase, B: Common)
1 = 40W |
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4Ω |
4Ω |
1/2 = 20W |
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8Ω |
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1/4 = 10W |
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1/8 = 5W |
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1/8 |
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1/4 |
1/8 |
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1/2 |
1/4 |
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1 |
1/2 |
4Ω |
4Ω |
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1 |
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100V |
70.7V |
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A |
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B |
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4Ω |
4Ω |
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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
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110 |
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SPL |
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BOSCH |
100 |
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DB |
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90 |
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80 |
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70 |
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60 |
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10 |
100 |
1000 |
10000 |
100000 |
LA1-UM20E-1 Frequency response |
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