Bosch - LC4-UC24E, 24W Wide-Angle CosCone Ceiling Loudspeaker for 70V/100V Systems

Features

- Professional flush-mounted ceiling loudspeaker

- Innovative CosCone full-range transducer

- Clear speech and music reproduction

- Even distribution across important octave frequencies

- Helps eliminate high-frequency beaming

- Exceptionally wide and uniform acoustic coverage

- 180-degree opening angle at 1 kHz

- 180-degree opening angle at 4 kHz

- Covers larger areas with fewer loudspeakers

- Reduces level fading between adjacent loudspeakers

- Twenty-four-watt rated output power

- Thirty-six-watt maximum power handling

- Four selectable transformer power settings

- Available taps: 24 W, 12 W, 6 W and 3 W

- Supports 70-volt distributed-audio systems

- Supports 100-volt distributed-audio systems

- Conventional 8-ohm operation available

- Front-accessible power-selection control

- Extended frequency response up to 20 kHz

- Rated acoustic output of 101 dB at one meter

- Separate removable circular front grille

- Steel grille with ABS surround

- White paintable front grille

- Quick bayonet grille attachment

- Compact self-extinguishing ABS loudspeaker body

- Two integrated screw-driven ceiling clamps

- Supports ceilings up to 50 mm thick

- Compact 162 mm mounting cutout

- Four-way screw-terminal connection

- Separate terminals for incoming and outgoing conductors

- Supports loop-through system wiring

- Accepts wire sizes from 0.5 to 3 mm²

- Provision for a DC-supervision capacitor

- Compatible with the Bosch LC4-CBB back box

- Compatible with the Bosch LC4-MFD fire dome

- IP21 protection with the specified accessory

- EN 54-24 voice-alarm certification

- UL 1480 and UL 2043 certifications

- Supports BS 5839-8 evacuation applications

- Endurance tested for 100 hours at rated power

- Handles twice rated power for short durations

- Ceiling cutout template included

- Rear accessories sold separately

Specifications

- Brand: Bosch

- Model: LC4-UC24E

- Product number: F.01U.217.142

- Product range: LC4 Ceiling Loudspeakers

- Product type: Full-range ceiling loudspeaker

- Driver technology: CosCone

- Application: Speech, music and voice alarm

- Maximum power: 36 W

- Rated power: 24 W

- Selectable power taps: 24 W, 12 W, 6 W and 3 W

- Low-impedance mode: 8 Ω

- Compatible line voltages: 70 V and 100 V

- Rated voltage in 8-ohm mode: 13.9 V

- 24 W impedance at 70 V: 208 Ω

- 24 W impedance at 100 V: 416 Ω

- 12 W impedance at 70 V: 416 Ω

- 12 W impedance at 100 V: 833 Ω

- 6 W impedance at 70 V: 833 Ω

- 6 W impedance at 100 V: 1,667 Ω

- 3 W impedance at 70 V: 1,667 Ω

- 3 W impedance at 100 V: 3,333 Ω

- Current catalog frequency range at -10 dB: 82 Hz to 20 kHz

- Sensitivity at 1 W/1 m: 87 dB SPL

- Rated-power level at 1 m: 101 dB SPL

- Sensitivity at 1 W/4 m: 76 dB SPL

- Rated-power level at 4 m: 88 dB SPL

- Coverage at 1 kHz: 180° × 180°

- Coverage at 4 kHz: 180° × 180°

- Connector: Four-way screw-terminal block

- Accepted wire gauge: 0.5 to 3 mm²

- Outside diameter: 200 mm

- Mounting cutout diameter: 162 mm

- Maximum depth: 70 mm

- Compatible ceiling thickness: 5 to 50 mm

- Mounting system: Two integrated screw-driven clamps

- Loudspeaker-body material: Self-extinguishing ABS V0

- Grille material: Steel mesh with ABS V0 rim

- Loudspeaker-body color: Black RAL 9011

- Front-grille color: White RAL 9003

- Paintable grille: Yes

- Net weight: 990 g

- Operating temperature: -25 °C to +55 °C

- Storage and transport temperature: -40 °C to +70 °C

- Relative humidity: Up to 95%, non-condensing

- Ingress protection: IP21 with LC4-CBB or LC4-MFD

- Voice-alarm certification: EN 54-24

- Evacuation compliance: BS 5839-8

- United States certifications: UL 1480 and UL 2043

- Safety standard: EN 60065

- Compatible back box: Bosch LC4-CBB

- Compatible fire dome: Bosch LC4-MFD

- Supplied loudspeaker quantity: 1

- Front grille included: Yes

- Ceiling cutout template included: Yes

- Installation instructions included: Yes

- Back box and fire dome included: No