LBC3951/11
Compact IPx4 ceiling loudspeaker, 6W
6 / 3 / 1.5 / 0.75 W | Perforated metal grille | 88 dB SPL (1W, 1m) | 60 Hz to 18 kHz | Non-EN54
LBC3951/11
Compact IPx4 ceiling loudspeaker, 6W
6 / 3 / 1.5 / 0.75 W | Perforated metal grille | 88 dB SPL (1W, 1m) | 60 Hz to 18 kHz | Non-EN54
Bosch LBC3951/11 Product Highlights
Explore the key capabilities of the Bosch LBC3951/11 ceiling loudspeaker.
IPx4 Splash-Proof
Water protected from the front, for humid environments.
Compact yet Powerful
A 4-inch driver in a 160 mm housing, 88 dB at 1 W.
Very Wide Coverage
Opening angle 170° / 80°, 60 Hz to 18 kHz.
Integral Clips
Clips hold it in a 145 mm cut-out; no special tools.
Push-In Terminal
Push-type terminals with loop-through; colour-coded tap wires.
Four Power Taps
Delivered at 6 W; 3, 1.5 or 0.75 W by moving one wire.
Key specs
- Taps 6 / 3 / 1.5 / 0.75 W (100 V), max 9 W
- 96 / 88 dB SPL at 6 W / 1 W (1 kHz, 1 m)
- 60 Hz to 18 kHz
- Opening angle 170° / 80°
- 145 mm cut-out, ceilings 9 to 25 mm
- Ø 160 mm, depth 95 mm, 690 g
- Perforated metal grille, 4-inch driver
- 2-pole push-in terminal, loop-through
- IPx4 from the front
- RAL 9010 white
- Not EN54-24
Electrical | |
Maximum power | 9 W |
Rated power | 6 / 3 / 1.5 / 0.75 W |
Sound pressure level at 6 W / 1 W (1 kHz, 1 m) | 96 dB / 88 dB (SPL) |
Sound pressure level at 6 W / 1 W (4 kHz, 1 m) | 99 dB / 91 dB (SPL) |
Effective frequency range (-10 dB) | 60 Hz to 18 kHz |
Opening angle at 1 kHz/4 kHz (-6 dB) | 170° / 80° |
Rated voltage | 100 V |
Rated impedance | 1667 ohm |
Connector | 2-pole push-in terminal block |
Mechanical | |
Diameter | 160 mm (6.30 inch) |
Maximum depth | 95 mm (3.74 inch) |
Ceiling thickness | 9 to 25 mm (0.35 to 0.98 inch) |
Mounting cut-out | 145 mm (5.71 inch) |
Speaker diameter | 101.6 mm (4 in) |
Weight | 690 g (1.52 lb) |
Color | White (RAL 9010) |
Magnet weight | 101 g (3.57 oz) |
Environmental | |
Operating temperature | -25 ºC to +55 ºC (-13 ºF to +131 ºF) |
Storage temperature | -40 ºC to +70 ºC (-40 ºF to +158 ºF) |
Relative humidity | <95% |
Know before you buy
Quick answers about the LBC3951/11, and how it compares.
How do the 6 W ceiling loudspeakers compare?
| Model | Build | SPL 1 W, 1 m (1 kHz) | Frequency range | Cut-out | EN54-24 |
|---|---|---|---|---|---|
| LC3-UC06 | ABS | 86 dB | 90 Hz to 20 kHz | 167 mm | No |
| LC3-UC06E | ABS | 86 dB | 90 Hz to 20 kHz | 167 mm | With LC3-CBB |
| LC9-UC06 | Metal grille, plastic surround | 92 dB | 80 Hz to 20 kHz | - | No |
| LHM0606/10 | Metal grille | 86 dB | 80 Hz to 18 kHz | 165 mm | No |
| LBC3090/01 | ABS grille, metal frame | 91 dB | 70 Hz to 18 kHz | 182 mm | No |
| LBC3090/31 | Metal grille | 91 dB | 70 Hz to 18 kHz | 172 mm | No |
| LBC3951/11 | Metal grille, 4-inch, IPx4 | 88 dB | 60 Hz to 18 kHz | 145 mm | No |
| LBC3086/41 | Metal grille | 90 dB | 90 Hz to 20 kHz | 196 mm | With LBC3081/02 |
| LC3-UM06E | Metal grille, fire dome | 92 dB | 290 Hz to 18 kHz | 170 mm | Yes |
| LC1-UM06E8 | Steel, modular | 89 dB | 70 Hz to 20 kHz | 190 / 200 mm | In LC1 housing |
The new series is on Entry and Mid Level pages, all with a 180 mm cut-out.
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 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.