LA1-UM20E-1
Metal column loudspeaker, 20W
20 / 10 / 5 / 2.5 W | Aluminium enclosure and grille | 92 dB SPL (1W, 1m) | 240 Hz to 16 kHz | EN54-24
LA1-UM20E-1
Metal column loudspeaker, 20W
20 / 10 / 5 / 2.5 W | Aluminium enclosure and grille | 92 dB SPL (1W, 1m) | 240 Hz to 16 kHz | EN54-24
Bosch LA1-UM20E-1 Product Highlights
Explore the key capabilities of the Bosch LA1-UM20E-1 column loudspeaker.
Directed Sound
A narrow vertical beam, 80° / 22° V, keeps speech clear in echoing spaces.
Voice Alarm, EN 54-24
To EN 54-24, with ceramic terminal, thermal fuse and heat-resistant wiring.
IP65 Slim Aluminium
Slim, weatherproof aluminium column for indoor and outdoor use.
Swivel Bracket on a Slider
The bracket slides to any point along the back; or fit a floor stand.
Rotary Tap Switch
20 / 10 / 5 / 2.5 W on 70 V or 100 V, or 8 ohm.
Terminals and Worship
Passenger terminals, places of worship, conference venues, pools.
Key specs
- Taps 20 / 10 / 5 / 2.5 W (70 / 100 V), 8 ohm
- Max 30 W
- 105 / 92 dB SPL at rated / 1 W (1 kHz, 1 m)
- 240 Hz to 16 kHz (-10 dB)
- Opening angle 210° / 94° H, 80° / 22° V (1 / 4 kHz)
- 478 x 84 x 96 mm, 2.9 kg
- Aluminium enclosure and grille, ABS end caps
- 1 m 3-wire cable, ceramic terminal, thermal fuse
- IP65
- White RAL 9010
- EN 54-24 (CPR)
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Electrical |
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Maximum power |
30 W |
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Rated power (PHC) |
20 W |
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Power tapping |
20 / 10 / 5 / 2.5 W |
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Sound pressure level at rated power / 1 W (1 kHz, 1 m) |
105 / 92 dB (SPL) |
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Sound pressure level at rated power / 1 W (4 kHz, 1 m) |
108 / 95 dB (SPL) |
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Effective frequency range (-10 dB) |
240 Hz to 16 kHz |
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Horizontal opening angle at 1 kHz / 4 kHz (-6 dB) |
210°/ 94° |
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Vertical opening angle at 1kHz/4kHz (-6 dB) |
80°/ 22° |
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Rated input voltage |
12.65/70/100 V |
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Rated impedance |
8/251/500 ohm |
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Mechanical |
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Dimensions (L x W x D) |
450 x 84 x 96 mm |
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Weight |
2.9 kg (6.4 lb) |
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Color |
White (RAL 9010) |
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Material (housing and grille) |
Extruded aluminum / steel |
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Connection |
2 m (78.8 in) 3-wire cable |
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Connector (phase, common, earth) |
3‑pole screw block |
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Environmental |
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Operating temperature |
-25 ºC to +55 ºC (-13 ºF to +131 ºF) |
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Storage temperature |
-40 ºC to +70 ºC (-40 ºF to +158 ºF) |
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Relative humidity |
<95% |
Know before you buy
Quick answers about the LA1-UM20E-1, and how it compares.
Column loudspeaker or line array?
- XLA line arrays, LBC3200/00 and LBC3201/00: the premium choice for halls. Several drivers with advanced filtering give an extended listening area: the sound stays even from the front rows to the back, and the beam stays wide (18° to 22° vertical at 4 kHz) instead of narrowing. 190 Hz to 18 kHz, EN54-24 certified, indoor. The 60 W LBC3201/00 is made for large, reverberant spaces such as places of worship.
- Metal columns, LA1-UM20E-1 and LA1-UM40E-1: slim aluminium columns for speech where directivity matters, IP65 for indoor and outdoor use (terminals, pools, factories), designed for voice alarm to EN 54-24.
- MDF column, LA1-UW36-D1 / LA1-UW36-L1: a 36 W indoor column with four drivers, high sensitivity and a wide 160 Hz to 19 kHz range, for speech and music.
| Model | Power taps | SPL 1 W / max | Frequency range | Vertical beam at 4 kHz | Height | IP |
|---|---|---|---|---|---|---|
| LBC3200/00 | 30 / 15 / 7.5 W | 91 / 106 dB | 190 Hz to 18 kHz | 18° | 600 mm | IP21C |
| LBC3201/00 | 60 / 30 / 15 W | 91 / 108 dB | 190 Hz to 18 kHz | 22° | 1,200 mm | IP21C |
| LA1-UM20E-1 | 20 / 10 / 5 / 2.5 W | 92 / 105 dB | 240 Hz to 16 kHz | 22° | 478 mm | IP65 |
| LA1-UM40E-1 | 40 / 20 / 10 / 5 W | 95 / 111 dB | 250 Hz to 16 kHz | 12° | 778 mm | IP65 |
| LA1-UW36-D1 / LA1-UW36-L1 | 36 / 18 / 9 W | 98 / 114 dB | 160 Hz to 19 kHz | 8° | 841 mm | Indoor |
The XLA and LA1-UM models take the universal floor stand LBC1259/01 (ask us) for temporary set-ups.
What does EN54-24 mean?
EN 54-24 is the European standard for loudspeakers in voice alarm (evacuation) systems. Certified models show EN54-24 in the banner at the top of their page; the others show Non-EN54 and suit commercial public address and music. For an evacuation system, use EN54-24 loudspeakers throughout.
What do the power taps mean?
Each loudspeaker can be set to one of its power taps, for example 6 / 3 W. Choose a lower tap for small or quiet areas and a higher tap for large or noisy ones. Add up the taps of every loudspeaker on a line: the amplifier must deliver at least that total.
Many 6 W ceiling loudspeakers are tapped down to 3 W, 1.5 W or 0.75 W in the field; in smaller or low-noise areas 3 W is more than enough.
Who supplies Bosch loudspeakers in the UAE, and what warranty do I get?
Protechtors General Trading LLC (hik.ae) is an authorized partner of Bosch, Dynacord and Electro-Voice in the UAE, so everything we supply is genuine and comes with a 3-year warranty. Warranty is carry-in: bring the unit to our office in Dubai and after inspection it is repaired or replaced as needed.
We supply Bosch loudspeakers across the UAE and support you after the sale. Prices are quoted per project: tell us what you need and we will send a quote.