Description
The Bosch LA1-UM40E-1 and LA1-UM20E-1 metal column loudspeakers deliver professional performance from a robust, yet aesthetically designed aluminum enclosure in a white finish. The Bosch LA1-UM40E-1 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.
- 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 70/100 V line and 8 Ohms
- Provision for inside mounting of the optional line/loudspeaker supervision board
- EN 54‑24 certified
- BS 5839‑8 and EN 60849 compliant
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, it 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.
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 is also provided on the
rotary vary‑tap switch.