Bosch F.01U.141.638 Datasheet

Communications Systems | LA1 UMx0E Metal Column Loudspeakers

LA1 UMx0E Metal Column Loudspeakers

The LA1 UM20E and LA1 UM40E 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 and LA1 UM40E are designed for voice alarm systems, and are compliant with British Standard BS 5839 8 and EN 60849.

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, system integrity is maintained; ensuring loudspeakers in other areas can still be used to inform people of the situation.

Good speech intelligibility and background music reproduction

For applications where directivity is important

Slim-line weatherproof design

Swivel wall mounting bracket supplied as standard

Robust aluminum construction

Switchable between 100 V line and 8 Ohms

Provision for inside mounting of the optional line/ loudspeaker supervision board

Recommended for voice evacuation systems

Connections and safety

The loudspeaker columns have a ceramic terminal block, thermal fuse, and heat-resistant, high-temperature 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 and switch off position 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 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.

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2 | LA1 UMx0E Metal Column Loudspeakers

Safety	acc. to EN 60065
Emergency	acc. to BS 5839 8
	acc. to EN 60849
Water and dust protection	acc. to EN 60529 IP 65

Installation/Configuration Notes

The column loudspeakers can be wall mounted using the swivel wall bracket standard supplied, or directly onto a floor stand LBC 1259/00 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

100mm

29.5"

3.94"

LA1-UM40E Dimensions mm (in)

LA1-UM20E Dimensions mm (in)