Bosch LC4-UC24E

Bosch LC4-UC24E 24W screw clamp mount ABS ceiling speaker with 100V line tx taps at 24, 12, 6 & 3W. 87dB SPL
Regular price $518.00
Regular price $554.40 Sale price $518.00
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Regular price $518.00
Regular price $554.40 Sale price $518.00

The Bosch LC4-UC24E ceiling speaker can be used for a wide variety of indoor public address applications to provide excellent speech and music quality.


Compliant with EN54-24 and BS5839 part 8 when used with the optional LC4CBB or LC4MFD back box / fire dome.


There are 3 variants in the range rated at 6w, 12w, and 24w all with the same 200mm diameter grille. The Bosch LC4-UC24E is rated at 24 watts, 100 volt line and 8?. 162mm cut-out.


New Cos Cone driver technology used in this range, delivers outstanding sound quality from a small sized unit, ensuring a wide and equal spread of all octave frequencies and eliminates high?frequency beaming.


Fewer loudspeakers are?needed to cover a given area, and the noticeable??fading? that can occur as a listener walks from one?loudspeaker to another area is eliminated.


Its extremely wide opening angle (180? at 4 kHz) delivers high-quality audio with a wide frequency range over a large area, so you can use fewer units than is normally recommended.

The LC4 ceiling speaker range includes a back?box and metal fire?dome - the use of either ensures the LC4 range comply with EN54-24 and BS5839 part 8.


  • Innovative CosCone full range driver

  • Excellent speech and music reproduction

  • Unrivalled opening angle for all octave frequencies

  • Paintable grille

  • EN 54‑24, UL2043, UL1480 certified

LC4‑UC06E, LC4‑UC12E, LC4-UC24E
Description Ceiling loudspeaker
Maximum power 9 W , 18 W, 36W
Rated power 6 W (6/3/1.5/0.75W) , 12 W (12/6/3/1.5W), 24 W (24/12/6/3 W)
Sound pressure level at 6 W power / 1 W (1 kHz, 1 m) 95 dB / 87 dB (SPL) , 98 dB / 87 dB (SPL), 101 dB / 87 dB (SPL)
Opening angle at 1 kHz / 4kHz (-6 dB) 180° / 180°
Effective frequency range(-10 dB) 65 Hz to 20 kHz
Rated voltage 6.93 / 70 / 100 V , 9.8 / 70 / 100 V, 13.9 / 70 / 100 V
Rated impedance 8 / 835 / 1667 Ohm , 8 / 418 / 833 Ohm, 8 / 208 / 417 Ohm
Electrical connection 4‑way screw terminal block
Acceptable wire gauge 0.5 – 3 mm²
Diameter 200 mm (7.87 in)
Mounting cut‑out 162 mm (6.38 in)
Min./Max. ceiling thickness 5 to 50 mm (0.19 to 1.97 in)
Maximum depth 70 mm (2.75 in)
Material (Loudspeaker unit) ABS (V 0)
Material (front grille) Steel mesh with ABS (V 0) rim
Weight 800 g / (1.77 lb), 840 g / (1.86 lb), 990 g / (2.18 lb)
Colour (front grille) White (RAL 9003)