The JBL Control 321C is a 12” high-output coaxial ceiling loudspeaker with HF compression driver for excellent speech and vocal clarity. From the Manufacturer: The Control 321C has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker. Features: Consistent 90° broadband pattern control. Components 300 mm (12 in) woofer with Kevlar-reinforced cone with 50 mm (2 in) voice-coil. 25 mm (1 exit) compression driver. Extraordinary clarity for speech and vocals with extended frequency response for music. 250 Watt power handling with high sensitivity provides high SPL capability. Advanced high-slope crossover network for constant coverage and smooth, natural midrange. Clean, contemporary grille and optional backbox available. Specifications: Frequency Range (-10dB): 34 Hz – 18 kHz Power Rating: IEC Long-Term System Power Rating: 250 W continuous pink noise (1000 W peak), 2 hrs 200 W continuous pink noise (800 W peak), 100 hrs Sensitivity: 94 dB (1 kHz - 16 kHz) Frequency Response (±3 dB): 47 Hz – 16 kHz Coverage Angle: 90° conical, constant directivity Directivity Factor (Q): 8.7 (1k - 16kHz) Directivity Index (DI): 9.4 dB (1k - 16kHz) Crossover Network: 1.8 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF Impedance: 5.6 ohms Dimensions (H x W x D): 366 x 366 mm (14.4 x 14.4 in) square baffle x depth from back of baffle of 223 mm (8.8 in) Maximum SPL (1m): 118 dB (124 dB peak) Input Connectors: Screw locking barrier strip for bare wire Drivers: LF Driver: 300 mm (12 in) HF Driver: compression driver, 25 mm (1 inch) coil Color: White Safety Agency: Suitable for use in air handling spaces per UL1480, UL2043, NFPA90 & NFPA 70 when installed with UL listed backcan such as JBL MTC-300BB12. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849. Backcan: formed steel (wood-lined; accessory) Baffle/Rim: Metal, driver pre-mounted to baffle, ported. Ceiling Cutout Size: 378 x 378 mm (14.9 x 14.9 in) (for MTC-300BB12 backcan) Optional Accessories: MTC-300SG12 Grille, square contoured, white. MTC-300BB12 Backbox, 80 liters (3 cubic feet) MTC-300T150 Transformer, 150 W for use with 321C. Plenum Usage: Yes, with accessory backcan
