The JBL 8124 is a cost-effective 4” in-ceiling loudspeaker for commercial applications, easy to install and offers maximum sound using minimal amplifier power. From the Manufacturer The 8124 is a 4-inch, full-range, cost-effective loudspeaker for commercial applications. The 8124 features high-fidelity performance in an easy to install package. The system’s high sensitivity drivers deliver maximum sound levels using minimal amplifier power. With its contemporary grill design, 70V/100V taps and an open-back design, the 8100 series brings elegance and performance to basic commercial sound systems, or any application not requiring a backcan for installation. Features Clear, High-Fidelity Performance Dog-ears for easy retrofit installations High Sensitivity (93 dB, 1W, 1m) for Maximum Power Efficiency 6W Transformer for use of 70V / 100V Distributed Lines Specifications Drivers: 4 in (100 mm), Full-range Driver Frequency Range: 60 Hz – 18 kHz Sensitivity: 93 dB (1 kHz – 8 kHz) Coverage Angle: 130° conical Transformer Taps: 6W, 3W, 1.5W (0.75W at 70V only) Input Connectors: Bare wires Dimensions (Diameter x Depth): 8.1 in (206mm) x 3.5 in (89mm) Weight: 2.5lb (1.2kg) Included Accessories: Sculpted Grille Optional Accessories: MTC-8124C C-ring, MTC- Rail tile rails Power Rating: See transformer taps Maximum SPL (1m): 101 dB ave. (top 70V/100V tap) Color: White Baffle/Rim: Plastic Ceiling Cutout Size: 175 mm diameter (6.9 in) Plenum Usage: Not intended for use in return air plenums Backcan: No