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The Bosch LA1-UM20E-1 slimline aluminium column loudspeaker is one of our favourite products. It's EN54-24 certified and rated at 20 watts.

The LA1UM20E offers excellent long throw sound projection characteristics and is ideal for both indoor and outdoor use in places such as airports, churches and other 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 LA1UM20E-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 an ideal EN54-24 speaker for emergency paging.

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

Additional Information

Max Power  30W
Rated Power 20 W (20-10-5-2.5 W)
Sound Pressure Level at Rated Power/1 W (at 1 kHz, 1 m) 105 / 92 dB (SPL)
Sound pressure level at rated power / 1 W (4 kHz, 1 m) 108 / 95 dB (SPL)
Effective Frequency Range (-10 dB) 240 Hz to 16 kHz
Opening Angle (at 1 kHz / 4 kHz, - 6 dB) Horizontal 210° / 94°, Vertical 80° / 22°
Rated Input Voltage 12.65/70/100 V
Rated Impedance 8/251/500 ohm
Dimensions (H x W x D) 450 x 84 x 96 mm
Weight (kg) 2.9 kg (6.4 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-UM20E-1