JBL 8124 - 4-inch, Full-range, In-Ceiling Loudspeaker 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. General Specifications Component - 4 in (100 mm), full-range driver Frequency Range - 60 Hz – 18 kHz Sensitivity - 93 dB (1 kHz – 8 kHz), 1W, 1M Coverage - 130° conical 70V/100V Taps - 6W, 3W, 1.5W (0.75W at 70V only) Termination - Bare wires Nominal Driver Impedance - 8 ohms Driver Power Capacity - 20 W Plenum Usage - Not intended for use in return air plenums Included Accessories - Sculpted Grille Optional Accessories - MTC-8124C C-ring, MTC- Rail tile rails Dimensions Diameter - 8.1 in (206 mm) Depth - 3.5 in (89 mm) Weight - 2.5 lb (1.2 kg) Cutout Dimension - 175 mm diameter (6.9 in) What's in The Box? 1 x 8124 Ceiling Speaker 1 x Sculpted Grille