ลำโพงเพดาน  ยี่ห้อ JBL รุ่น 8138

The 8138 is an 8″ ceiling speaker designed for use with a pre-install inceiling backcan, resulting in highfidelity performance at a costeffective price point. The 8138 is ideal for a wide variety of commercial sound applications from restaurant and retail to professional offices and reception areas.

• 8″ (200 mm) Full-Range In-Ceiling Loudspeaker for use with Pre-Install Backcans
• Stylish, contemporary appearance enhances any decor.
• Clear sound from an 8 inch dualcone full-range driver.
• Very high sensitivity of 97 dB for maximum sound levels using minimum amplifier power.
• 6W transformer for use on 70V/100V distributed speaker lines
• Installs to in-ceiling backboxes having 4 mounting points on an 11.25″ (286 mm) diameter mounting circle.
• For use with MTC-81BB8 backcan and MTC-81TB8 tile bridge

Specifications

• Drivers 200 mm (8 in) Full-Range, Dual-cone
• Frequency Range (-10dB)     95 Hz – 18 kHz
• Coverage Angle 90° conical
• Sensitivity     97 dB (2k – 8k Hz)
• Driver Power Capacity   40W (160W peak), 2 hrs25W (100W peak), 100 hrs
• Transformer Taps      6W, 3W, 1.5W, (0.75W at 70V only)
• Input Connectors       Bare Wire
• Magnet 10 ounces (283 g)
• Safety Agency   Transformer is UL registered per UL1876
• Installation         Full assembly consists of 8138 speaker plus MTC-81BB8 backbox andMTC-81TB8 tile bridge. Four screw holes at industry standard 286 mm (11.25 in) mounting circle.
• Dimensions (Diameter x Depth) 327 mm (12.9″) diameter baffle x 84 mm (3.3″) depth from back of baffle. Overall depth, 99 mm (3.9″)
• Mounting points        4 points on 286 mm (11.25 in) diameter mounting circle
• Ceiling Cutout Size    300 mm (11.75″) with tile bridge and backbox.228 mm (9.0″) diameter as stand alone.
• Net Weight   1.4 kg (3.0 lb)
• Included Accessories     Integral grille, 4 pcs M4 x 40 mm tapping screws
• Optional Accessories     MTC-81BB8 backcan, MTC-81TB8 tile bridge
• Power Rating     See transformer taps
• Maximum SPL (1m)  105 dB (top 70V/100V tap)
• Color     White
• Backcan      formed steel (accessory)
• Baffle/Rim      Plastic
• Plenum Usage   Yes, with accessory backcan