JBL Professional JBL Control 322C High-output 12-inch coaxial in-ceiling loudspeaker

The Control 322C is the higher-output 12-inch coaxial ceiling loudspeaker. The Kevlar-reinforced 300 mm woofer runs a 75 mm voice coil and the compression driver is a medium-format unit on a 37 mm coil, crossed at 1.4 kHz. That combination gives 121 dB maximum and 95 dB sensitivity, against 118 dB from the 321C.

Pattern control is 90 degrees conical across the band and response reaches 32 Hz at -10 dB. Impedance is 8 ohms. The metal baffle is ported with the driver pre-mounted; ceiling cutout is 378 x 378 mm for the MTC-300BB12 backcan, which is an accessory and is required for plenum installation. Termination is a screw-locking barrier strip.

Type	High-output 12-inch coaxial in-ceiling loudspeaker
Impedance	8 ohms
Power rating	400 W continuous pink noise (1600 W peak), 2 hrs
Maximum SPL (1 m)	121 dB (127 dB peak)
Sensitivity	95 dB (1 kHz - 16 kHz)
Frequency range (-10 dB)	32 Hz - 20 kHz
Frequency response (+/-3 dB)	48 Hz - 19 kHz
Coverage angle	90 degrees conical, constant directivity
Crossover network	1.4 kHz, 3rd-order high-pass with conjugate to HF, 2nd-order low-pass to LF
Drivers	300 mm (12-inch) Kevlar-reinforced woofer, 75 mm coil; 37 mm coil compression driver
Input connectors	Screw-locking barrier strip for bare wire
Ceiling cutout	378 x 378 mm (14.9 x 14.9 in), for MTC-300BB12 backcan
Plenum use	Yes, with accessory backcan
Dimensions	366 x 366 mm square baffle, 223 mm deep behind baffle