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Bosch LC1-UM12E8 Ceiling Speaker White Wired 12 W

Frequency range of 55 to 20,000 Hz with 100 dB sensitivity.

  • Frequency range 55-20,000 Hz
  • 100 dB sensitivity
  • 418 Ohm impedance
Ref.: LC1-UM12E8
Bosch LC1-UM12E8 Ceiling Speaker White Wired 12 W — image 1

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539,00 DHincl. VAT

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Manufacturer's datasheetView the PDF · 2,0 Mo — downloadable

Product overview

Give your space exceptional sound quality with the Bosch LC1-UM12E8. This 12 W wall/ceiling speaker offers a frequency range of 55 - 20,000 Hz, a sensitivity of 100 dB and an impedance of 418 ohms, for remarkable audio clarity. Its elegant design and white finish blend seamlessly into any decor. Choose the Bosch LC1-UM12E8 for a superior audio experience and reliable everyday performance.

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Technical specifications

Technical specifications
Weight (kg)1.3 kg
BluetoothNone
Box contentsLC1-UM12E8 ceiling speaker, installation instructions
Battery capacityNone (device has no battery)
Input voltage70 V / 100 V
Battery typeNone (device has no battery)
Remote controlNone
Frequency response55 Hz - 20 kHz (-10 dB)
Audio inputThree-pole screw terminal block
Audio outputNone
Power handling12 W nominal, 18 W maximum
Wi-FiNone
Material(s)Steel chassis and front grille
MicrophoneNone
Power supplyVia the 70 V / 100 V audio line (no power supply of its own)
CertificationsEN 54-24, EN 60849, BS 5839-8, UL 2043, UL 1480 F (with in-ceiling mounting accessory), EN 60065
Battery lifeNone (device has no battery)
Technical specifications (continued)
MountingFlush-mounted in the ceiling with an accessory ordered separately (LC1-MMSB or LC1-CMR)
In-ceiling mountingDiameter 220 mm, maximum depth 125 mm (including LC1-MMSB bracket), cut-out 190 or 200 mm
Operating temperature-25 to +55 °C
RGB lightingNo
Speaker type12 W coaxial ceiling speaker, 70 V / 100 V line
Charging timeNone (device has no battery)
ControlsPre-wired power taps on the transformer
Impedance418 / 833 ohms depending on line voltage
Drivers (transducers)1 coaxial driver (bass and treble on the same axis)
Wireless pairing and daisy-chainingNone
Local media playbackNone
Charging connectorNone (device has no battery)
Power taps12 / 6 / 3 / 1.5 W
Sensitivity (1 W / 1 m)89 dB (1 W / 1 m, 1 kHz)
Maximum sound pressure level100 dB (at 12 W, 1 kHz, 1 m)
Coverage angle180° at 1 kHz, 64° at 4 kHz (-6 dB)
Warranty1 year

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Under Law 09-08, you have the right to access, rectify and object to the processing of your personal data. This processing has been authorised by the CNDP under no. D-CE-389/2015. Learn more

Frequently asked questions about this product

Is the Bosch LC1-UM12E8 certified for life-safety sound systems?
Yes, it carries EN 54-24, UL2043 and UL1480 certifications. EN 54-24 is the European standard for loudspeakers used in voice alarm systems: it is the one an inspection body will ask for on a life-safety installation.
What is the actual sensitivity of the LC1-UM12E8 loudspeaker?
89 dB, measured at 1 W and 1 m in the 1 kHz octave band. This is the figure to use when calculating the sound pressure level in the area to be covered: it determines the amplifier power and the spacing between two speakers.
What area does an LC1-UM12E8 cover from the ceiling?
Its dispersion is 180° × 180° at 1 kHz and narrows to 64° × 64° at 4 kHz. Speech therefore carries widely, high frequencies much less so: it is the second angle that determines the spacing between two speakers to maintain intelligibility.
What is in the box of the Bosch LC1-UM12E8?
The 12 W coaxial loudspeaker and its installation instructions. The grille format is unique to the range and comes with a full set of accessories, with several ceiling mounting options.
What frequency range does this ceiling speaker cover?
From 55 to 20,000 Hz at −10 dB — a wide range for a ceiling speaker, extending well below the band needed for voice announcements alone. The coaxial design, with treble and bass aligned on the same axis, contributes to this consistency.
Can this loudspeaker withstand the humidity of a plant room?
It is rated for 0 to 95% relative humidity, non-condensing, and an operating temperature of −25 to 55 °C. The body is made of steel, with a weight of 1.30 kg for the suspended ceiling to support.
Is the Bosch LC1-UM12E8 loudspeaker new and under warranty?
New, reference LC1-UM12E8, in white. The invoice serves as the warranty document for 1 year. The datasheet covers all the installation data.

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