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Bosch lbc3951 / 12 Ceiling Speaker, 6W, 4 "replacement Bosch lbc3951 / 11
Small and powerful
Ultra wide open angle
Beautiful and fashionable shape
Easy to install
Prevent liquid from splashing in
The lbc3951 / 12 is a compact 6W speaker with a perforated metal mask. It has extraordinary audio performance, built-in mounting clip, can be easily installed. The front of the loudspeaker is IPx4 waterproof, so it can be installed in wet environment.
function
The lbc3951 / 12 is equipped with a perforated metal mask with a plastic surround in a beautiful and stylish off white (RAL). The exquisite modeling of loudspeakers can be perfectly integrated with modern interior decoration and lighting equipment and coexist harmoniously. The speaker has an ultra wide open angle, which means less speakers are required to cover the specified area. Wide frequency range can achieve better voice and music playback effect. In addition, the loudspeaker is equipped with a 100V matching transformer, and the jumper connector on the primary winding allows users to select full power, half power, quarter power and eighth power. The front of the speaker (with a special paper basin) is IPx4 waterproof and can be installed in wet environments such as bathrooms, saunas, atriums and swimming pools.
Certification standards
All plastic parts are made of high strength ABS flame retardant material (in accordance with UL94V0 standard).
qa
All Bosch loudspeakers comply with IEC 60268-5 power handling capacity (PHC) standard and can operate continuously for 100 hours at rated power. In addition, Bosch has conducted simulated acoustic feedback exposure (SAFE) tests to ensure that they can withstand twice the rated power in a short period of time. This ensures higher reliability of loudspeakers in extreme conditions, improves customer satisfaction, extends service life, and significantly reduces the probability of failure or performance degradation. The safety is in accordance with en 60065
Waterproofing to en 60529, IPx4 regional compliance / quality marking European CE decl EC lbc3951 / 12
Installation / configuration instructions
The speaker has a built-in mounting clip, which can be easily fixed in the ceiling opening. The thickness of the ceiling can be between 9 and 25 mm. In addition, templates are provided for accurately marking openings in the ceiling. The user can route the wiring through the terminal box with push in terminals for installation without using any special tools. The attached transformer wiring provides 6W rated output power, or the wiring can be easily changed using colored wires and junction boxes to provide different power.
Directivity map (low frequency part)
Octave sensitivity*
Octave SPL
1W/1m
Total octave
SPL
1W/1m
Total octave
SPL
Pmax/1m
125Hz 84.9 - -
250Hz 88.5 -
500Hz 84.8 - -
1000Hz 87.0 - -
2000Hz 91.0 - -
4000Hz 92.2 - -
8000Hz 88.4 - -
A weighting - 87.294.3
Lin weighting - 88.295.4
Octave opening angle
Horizontal and vertical
125Hz 180 180
250Hz 180 180
500Hz 180 180
1000Hz 180 180
2000Hz 180 180
4000Hz 65 65
8000Hz 69 69
Acoustic characteristics per octave. *(all measurements are done with pink noise signal
The unit of value is dB SPL).
Attached parts
Quantity component
1 lbc3951 / 12 Ceiling Speaker
1145mm round formwor
Technical index
lectrical parameters*
Rated power 6 / 3 / 1.5/0.75w
6W / 1W (1kHz, 1M)
Sound pressure level at
95dB/87dB (SPL)
6W / 1W (4kHz, 1M)
Sound pressure level at
98dB/90dB (SPL)
Effective frequency range (- 10dB) 90hz to 18khz
1kHz/4kHz (-6dB)
Open angle
180° / 65°
Rated voltage 100V
Rated impedance 16ohm
Connector 2-pin push in terminal box
*The technical performance data conform to IEC 60268-5 standard
Mechanical parameters
160 mm (6.30 in.) in diameter
Maximum thickness 95 mm (3.74 in)
Ceiling thickness 9 to 25 mm (0.35 to 0.98 in)
Mounting opening 145 mm (5.71 in)
Speaker diameter 101.6 mm (4 inches)
Weight 640 g (1.41 lb)
Color white (RAL 9010)
Magnet weight 101 g (3.57 oz)
Environmental specifications
Operating temperature - 25 ° C to + 55 ° C (- 13 ° f to + 131 ° f) storage and transportation temperature - 40 ° C to + 70 ° C (- 40 ° f to + 158 ° f)
Relative humidity < 95%
F. 01u.004.660 lbc3951 / 11 Ceiling Speaker, 6W (metal mask), IP64 136-272 CN: lbc3951 / 11 lbc3951 / 12 6 6 (*) 36 Malaysia a
ordering information
Lbc3951 / 12 Ceiling Speaker, 6W, 4“
Ceiling Speaker, 6 W, circular metal mask with ABS surround, built-in mounting clip for easy installation, push on junction box, white ral 9010.
Order No. lbc3951
enclosure
Lbc1256 / 00 ceramic connection adapter emergency connection adapter, 3-pin screw ceramic connector with pre installed temperature fuse, which can be connected in series with the 100 V main connection line of the loudspeaker unit (100 per set).
Order No. lbc1256 / 00
Sales telephone (same number of wechat): 13428785305 QQ: 2461903042
