+44(0)1663 767888


The Bosch LA1-UM40E-1 slimline aluminium column loudspeaker is one of our favourite products. It's EN54-24 certified and rated at 40 watts.

The LA1UM40E offers excellent long throw sound projection characteristics  and is ideal for both indoor and outdoor use in places such as airports, churches, places of worship, conference venues, theme parks, swimming pools and factories.

A swivel wall mounting bracket is supplied as standard, allowing accurate positioning and the speaker is rated IP65 - water resistant.

The LA1UM40E-1 is fire protected for use in Voice Alarm systems - constructed with ceramic terminal block, thermal fuse, and heat-resistant, high temperature wiring and fully compliant with BS5839 part 8, EN60849 and is ideal for use as an EN54-24 compliant speaker for emergency paging.

Dual impedance - suitable for both 8 ohm and 100 volt line sound systems.

Additional Information

Max Power  60W
Rated Power 40 W (40-20-10-5-2.5 W)
Sound Pressure Level at Rated Power/1 W (at 1 kHz, 1 m) 111 / 95 dB (SPL)
Sound pressure level at rated power / 1 W (4 kHz, 1 m) 114 / 98 dB (SPL)
Effective Frequency Range (-10 dB) 250 Hz to 16 kHz
Opening Angle (at 1 kHz / 4 kHz, - 6 dB) Horizontal 210° / 92°, Vertical 40° / 12°
Rated Input Voltage 17.89/70/100 V
Rated Impedance 8/125/250 ohm
Dimensions (H x W x D) 750 x 84 x 96 mm
Weight (kg) 4.4 kg (9.7 lb)
View FileEC Declaration of conformity: Bosch LA1-UM20E, LA1UM40E    Size: (1.04 MB)
View FileEN54 Declaration of conformity: Bosch LA1-UM20E, LA1-UM40E    Size: (243.68 KB)
View FileBosch LA1-UM20E & LA1-UM40E Datasheet    Size: (1.1 MB)
Product video for Bosch LA1-UM40E-1