Description
The JBL 8138 is an 8-inch full-range in-ceiling loudspeaker designed for use with pre-install backcans, delivering high-fidelity audio performance at a cost-effective price point. Featuring a dual-cone driver, high 97 dB sensitivity, and support for 70V/100V distributed audio systems, the 8138 is ideal for commercial applications such as restaurants, retail stores, offices, reception areas, and public spaces. Its stylish appearance, easy installation, and compatibility with JBL backcan accessories make it a versatile and reliable ceiling speaker solution.
<h2>More Information</h2>
Key Features
- 8-inch dual-cone full-range ceiling loudspeaker
- Designed for use with pre-install backcans
- Clear, high-fidelity audio performance
- Very high 97 dB sensitivity for maximum efficiency
- Built-in 6W transformer for 70V/100V distributed systems
- Stylish contemporary design suitable for commercial interiors
- Wide 90° conical coverage pattern
- Compatible with MTC-81BB8 backcan and MTC-81TB8 tile bridge
- Industry-standard mounting pattern for easy installation
- Suitable for restaurants, retail spaces, offices, and reception areas
- Plenum-rated installation when used with accessory backcan
Technical Specifications
- Drivers: 200 mm (8 in) Full-Range, Dual-Cone
- Frequency Range (-10 dB): 95 Hz – 18 kHz
- Coverage Angle: 90° Conical
- Sensitivity: 97 dB (2 kHz – 8 kHz)
- Driver Power Capacity: 40W Continuous (160W Peak, 2 hrs), 25W Continuous (100W Peak, 100 hrs)
- Transformer Taps: 6W, 3W, 1.5W (0.75W at 70V only)
- Maximum SPL (1m): 105 dB (Top 70V/100V Tap)
- Input Connectors: Bare Wire
- Magnet Weight: 283 g (10 oz)
- Safety Certification: Transformer UL Registered per UL1876
- Installation: Compatible with MTC-81BB8 Backcan and MTC-81TB8 Tile Bridge
- Mounting Points: 4 Points on 286 mm (11.25 in) Diameter Mounting Circle
- Dimensions (Diameter × Depth): 327 mm × 99 mm (12.9 in × 3.9 in)
- Depth from Back of Baffle: 84 mm (3.3 in)
- Ceiling Cutout Size: 300 mm (11.75 in) with Backbox & Tile Bridge; 228 mm (9.0 in) as Stand-Alone
- Net Weight: 1.4 kg (3.0 lb)
- Color: White




