LBC3481/12
Circular horn loudspeaker, 10W
10 / 5 / 2.5 W | ABS | 103 dB SPL (1W, 1m) | 500 Hz to 7 kHz | Non-EN54
LBC3481/12
Circular horn loudspeaker, 10W
10 / 5 / 2.5 W | ABS | 103 dB SPL (1W, 1m) | 500 Hz to 7 kHz | Non-EN54
Bosch LBC3481/12 Product Highlights
Explore the key capabilities of the Bosch LBC3481/12 horn loudspeaker.
Excellent Speech
High-efficiency driver: 103 dB at 1 W, up to 113 dB.
IP65 Outdoor
Water and dust protected IP65 for sports grounds, parks and pools.
ABS
Circular ABS horn, self-extinguishing (UL 94 V0).
Coverage
Opening angle 160° / 50° at 1 kHz / 4 kHz, 500 Hz to 7 kHz.
Simple Power Setting
Pick 10 / 5 / 2.5 W by the colour-coded core of the 2 m cable.
Adjustable Bracket
A sturdy adjustable bracket to aim the sound beam.
Key specs
- Taps 10 / 5 / 2.5 W (100 V), max 15 W
- 113 / 103 dB SPL at rated / 1 W (1 kHz, 1 m)
- 500 Hz to 7 kHz
- Opening angle 160° / 50° (1 / 4 kHz)
- Aperture 156 mm, length 184 mm
- ABS, 1.25 kg
- IP65, self-extinguishing UL 94 V0
- Fixed 2 m 4-wire cable
- Adjustable mounting bracket
- RAL 7035 light grey
- Not EN54-24
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Technical Specifications |
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Electrical |
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Max power |
15 W |
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Rated power (PHC) |
10 / 5 / 2.5 W |
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Sound pressure level at rated power / 1 W (1 kHz, 1 m) |
113 dB / 103 dB (SPL) |
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Sound pressure level at rated power / 1 W (2 kHz, 1 m) |
115 dB / 105 dB (SPL) |
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Effective frequency range (-10 dB) |
500Hz to 7kHz |
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Opening angle horizontal vertical |
1 kHz / 4 kHz (-6 dB) 160° / 50° 160° / 50° |
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Rated voltage |
100 V |
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Rated impedance |
1000 ohm |
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Connection |
2 m, 4-wire cable |
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Mechanical |
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Aperture diameter |
156 mm (6.14 in) |
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Overall length |
184 mm (7.24 in) |
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Color |
Light grey (RAL 7035) |
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Weight |
1.25 kg (2.75 lb) |
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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 LBC3481/12, and how it compares.
Which horn loudspeaker do I need?
| Model | Build | Power taps | SPL 1 W / max (1 kHz) | Frequency range | Range |
|---|---|---|---|---|---|
| LHE-10CGE | Fibre-reinforced ABS, IP66 | 10 / 5 W | 105 / 114 dB | 410 Hz to 9.7 kHz | Entry |
| LHE-30CGE | Fibre-reinforced ABS, IP66 | 30 / 15 W | 108 / 122 dB | 400 Hz to 11.3 kHz | Entry |
| LBC3481/12 | ABS, IP65 | 10 / 5 / 2.5 W | 103 / 113 dB | 500 Hz to 7 kHz | Entry |
| LHM-10MGE | Aluminium, IP66 | 10 / 5 W | 105 / 114 dB | 400 Hz to 9.7 kHz | Mid |
| LHM-30MGE | Aluminium, IP66 | 30 / 15 W | 109 / 123 dB | 315 Hz to 7.1 kHz | Mid |
| LHM-50MGE | Aluminium, IP66 | 50 / 25 W | 111 / 127 dB | 310 Hz to 6.6 kHz | Mid |
| LBC3492/12 | Aluminium and ABS, IP65 | 20 / 10 / 5 W | 110 / 123 dB | 380 Hz to 5.5 kHz | Mid |
| LBC3493/12 | Aluminium and ABS, IP65 | 30 / 15 / 7.5 W | 111 / 126 dB | 380 Hz to 5 kHz | Mid |
| LBC3484/00 | Aluminium, IP65 | 50 / 25 / 12.5 W | 110 / 127 dB | 350 Hz to 4 kHz | Mid |
| LH1-UC30E | ABS, two-way music horn | 30 / 15 / 7.5 / 3.75 W | 100 dB at 1 W | 210 Hz to 20 kHz | Performance |
| LH3-UC25XS | Polyamide, ex-proof | 25 W to 1.5 W | 106 / 118 dB | 380 Hz to 8 kHz | Hazardous areas |
| LH3-UC25XL | Polyamide, ex-proof | 25 W to 1.5 W | 109 / 122 dB | 380 Hz to 7 kHz | Hazardous areas |
The new LHE and LHM horns are EN54-24 with a smart bracket; so is the LH1-UC30E. Ranges: Entry, Mid, Performance.
Can this loudspeaker be used on a voice alarm line?
Ask us for the LBC1256/00 EVAC connection adapter: a 3-pole ceramic screw connector with a pre-mounted thermal fuse, installed in series with the loudspeaker's 100 V connection, so a loudspeaker damaged by fire does not take the line down. Sold in sets of 100. For certified evacuation systems, choose an EN54-24 model.
What is the difference between Entry, Mid and Performance Level?
- Entry Level: speech and alarm tones in public address and voice alarm; cost-efficient, nothing more, nothing less.
- Mid Level: high-quality speech plus background music, metal fire dome, more installation features. Mid Level horns add long throw and aluminium for demanding sites.
- Performance Level: evacuation and high-quality music in one housing.
It is about the job, not the price: if you only need alarm tones in an emergency, an Entry Level loudspeaker is reliable and perfectly fine. Pick Mid or Performance for background music, easier installation or more robust materials. Horns: Entry, Mid, Performance.
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.