LC1-UM24E8
Modular ceiling loudspeaker, 24W
24 / 12 / 6 / 3 W | Steel frame and grille | 89 dB SPL (1W, 1m) | 55 Hz to 20 kHz | EN54-24 in LC1 housing
LC1-UM24E8
Modular ceiling loudspeaker, 24W
24 / 12 / 6 / 3 W | Steel frame and grille | 89 dB SPL (1W, 1m) | 55 Hz to 20 kHz | EN54-24 in LC1 housing
Bosch LC1-UM24E8 Product Highlights
Explore the key capabilities of the Bosch LC1-UM24E8 ceiling loudspeaker.
Modular Design
One loudspeaker, several housings: one look for almost any ceiling.
Speech and Music
6-inch coaxial, 89 dB at 1 W and up to 103 dB, 55 Hz to 20 kHz.
EN54-24 in a Fire Dome
EN54-24 with the metal fire dome, surface box, or ring plus back box.
Bracket Sold Separately
Pick the LC1-MMSB bracket, LC1-CMR ring with LC1-CBB, or a fire dome.
Optional Supervision
Pilot tone indication with LED in the grille rim, or a supervision board.
70 V and 100 V
Taps 24 / 12 / 6 / 3 W on either line voltage.
Key specs
- Taps 24 / 12 / 6 / 3 W (70 / 100 V)
- 103 / 89 dB SPL at rated / 1 W (1 kHz, 1 m)
- 55 Hz to 20 kHz (-10 dB)
- Opening angle 180° / 58°
- 6-inch coaxial, steel frame and grille
- Ø 220 mm, depth 125 mm with bracket, 1.75 kg
- 3-pole screw terminal
- RAL 9010 white
- Housing ordered separately: LC1-MMSB, LC1-CMR + LC1-CBB, LC1-MFDS
- EN54-24, BS 5839-8 in fire dome, surface box or ring + back box
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Key Specifications |
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Color |
Gray |
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Dimensions (H x W x D) (in) |
8.47 x 4.92 x 2.20 in |
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Dimensions (H x W x D) (mm) |
215 x 125 x 56 mm |
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Material |
Steel |
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Operating temperature (°C) |
-25 – 55 °C |
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Storage temperature (°C) |
-40 – 70 °C |
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Weight (g) |
390 G |
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Weight (lb) |
0.70 lb |
Know before you buy
Quick answers about the LC1-UM24E8, and how it compares.
Which LC1 parts do I need?
An LC1 loudspeaker is fitted into one housing, bought separately:
- LC1-MMSB mounting bracket: steel, 190 mm cut-out, ceilings up to 50 mm.
- LC1-CMR mounting ring: ABS, 200 mm cut-out, ceilings up to 25 mm. Always use it with the LC1-CBB back box.
- LC1-MFDS metal fire dome with grommets, 190 mm cut-out. The LC1-MFD fire dome with ceramic loop-through connector and the LC1-CSMB surface mounting box are available on request (ask us).
For EN54-24, use a fire dome, the surface mounting box, or the mounting ring with back box. Pilot tone indication and supervision boards are optional for every LC1 loudspeaker.
Is the bracket included?
Which Mid or Performance Level ceiling loudspeaker do I need?
| Model | Power taps | Driver | Max SPL | Frequency range | Cut-out |
|---|---|---|---|---|---|
| LCM-03MWE | 3 / 1.5 W | 3-inch full range | 88 dB | 65 Hz to 20 kHz | 180 mm |
| LCM-06MWE | 6 / 3 W | 5.25-inch full range | 97 dB | 65 Hz to 20 kHz | 180 mm |
| LCM-06MBE | 6 / 3 W | 5.25-inch full range, black | 97 dB | 65 Hz to 20 kHz | 180 mm |
| LCM-12MWE | 12 / 6 W | 6-inch woofer, 1.1-inch tweeter | 103 dB | 65 Hz to 20 kHz | 180 mm |
| LCP-20MWE | 20 / 10 / 5 / 2.5 W | 4-inch woofer, 0.75-inch tweeter | 102 dB | 75 Hz to 20 kHz | 180 mm |
| LCP-30MWE | 30 / 15 / 7.5 / 3.75 W | 6.5-inch woofer, 1-inch tweeter | 107 dB | 93 Hz to 20 kHz | 272 mm |
| LC1-UM12E8 | 12 / 6 / 3 / 1.5 W | 6-inch coaxial (LC1 modular) | 100 dB | 55 Hz to 20 kHz | 190 / 200 mm |
| LC1-UM24E8 | 24 / 12 / 6 / 3 W | 6-inch coaxial (LC1 modular) | 103 dB | 55 Hz to 20 kHz | 190 / 200 mm |
The LCM and LCP models are EN54-24 certified with a fire dome; the LC1 models are EN54-24 in their LC1 housing (fire dome, or mounting ring with back box), bought separately. Mid Level: background music in voice alarm or commercial projects; the 3W suits smaller or quiet areas (88 dB possible). Performance Level: evacuation plus high-quality music.
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 Pakistan, and what warranty do I get?
Electronic Security Company (ESCO) is the only authorized distributor of Bosch, Dynacord and Electro-Voice in Pakistan, so every Bosch loudspeaker is genuine and comes with a 3-year warranty. Warranty is carry-in: bring the unit to an ESCO office and after inspection it is repaired or replaced as needed.
We supply, design and install public address and voice alarm systems, with offices and stock in Karachi, Lahore, Islamabad and Rawalpindi and dealers across Pakistan.