Description
The JBL LCT 81C/TM is a low-profile lay-in ceiling loudspeaker specifically designed for 600 mm x 600 mm metric suspended grid ceilings, allowing fast and clean installation without cutting ceiling tiles. Equipped with a high-efficiency 8-inch dual-cone driver, integrated 70V/100V transformer, and 8Ω direct operation, it delivers clear voice reproduction and high-quality background music performance. Its shallow 103 mm depth enables installation in areas with limited ceiling space, while the high 96 dB sensitivity ensures excellent output even with low-powered amplifiers. Ideal for classrooms, offices, retail environments, airports, meeting rooms, lounges, and paging systems, the LCT 81C/TM combines installation flexibility, wide coverage, and reliable commercial-grade performance.
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Key Features
- High-efficiency 200 mm (8-inch) dual-cone driver
- Designed for 600 mm x 600 mm metric suspended grid ceilings
- No ceiling tile cutting required
- Low-profile design with only 103 mm (4.1 in) depth
- Perforated metal grille included
- Combined 70V, 100V, and 8Ω low-impedance operation
- 20W direct low-impedance power handling
- 10W multi-tap transformer for distributed audio systems
- Transformer taps: 10W, 5W, 2.5W, and 1.3W (70V)
- Very high 96 dB sensitivity for maximum sound output
- Wide 100° conical coverage pattern
- Optimized for high speech intelligibility
- Side-access rotary tap selector
- Protected bare-wire wiring compartment
- Top and side cable-entry knockouts
- Two seismic safety tabs and four corner attachment points
- UL1480A and UL2043 certified for plenum installations
- Integrated steel backcan included
- Suitable for voice reinforcement and background music applications
Technical Specifications
- Driver: 200 mm (8 in) High-Efficiency Dual-Cone Driver
- Voice Coil: 25 mm (1 in) Diameter with Kapton Former
- Frequency Range (-10 dB): 100 Hz – 16 kHz
- Sensitivity: 96 dB (2 kHz – 6 kHz)
- Coverage Angle: 100° Conical
- Maximum SPL:
- 108 dB Continuous (8Ω Direct)
- 116 dB Peak
- 106 dB (Top 70V/100V Tap)
- Impedance: 8Ω Direct Setting
- Transformer Taps:
- 100V: 10W, 5W, 2.5W
- 70V: 10W, 5W, 2.5W, 1.3W
- Recommended High-Pass Filter: 90 Hz, 24 dB/Octave
- Power Capacity:
- 40W Continuous Program Power
- 20W Continuous Pink Noise
- Input Connectors: Bare Wire
- Tap Selector: Rotary Switch
- Materials:
- Steel Rear Enclosure
- Metal Front Baffle
- Perforated Metal Grille
- Grille Color: White
- Dimensions: 595 x 595 x 103 mm (23.4 x 23.4 x 4.1 in)
- Net Weight: 6.9 kg (15.2 lbs)
- Shipping Weight: 15.5 kg (34.2 lbs) Per Pair-Pack
- Ceiling Cutout: Not Required
- Suspension Points:
- 2 Seismic Safety Tabs
- 4 Corner Attachment Holes
- Backcan: Integrated Steel Backcan
- Baffle/Rim: Metal
- Plenum Rated: Yes
- Color: White







