JBL Control 321C 12" Coaxial 2-WAY Ceiling Loudspeaker

JBL Control 321C 12" Coaxial 2-Way Ceiling Loudspeaker

The Control 321C is a compact ceiling-mount loudspeaker engineered for consistent coverage in commercial and institutional environments. Its coaxial design and rigid metal baffle deliver controlled dispersion and reliable output across medium-sized spaces, making it a workhorse solution for installed audio systems where even tonal balance matters.

Audio Performance

This speaker combines a 300 mm Kevlar-reinforced woofer with a 25 mm compression driver crossed over at 1.8 kHz to produce a 94 dB sensitivity and maximum SPL of 118 dB at 1 meter (124 dB peak). The 90° conical constant-directivity coverage ensures uniform response across the listening area, while a frequency response of 47 Hz – 16 kHz (±3 dB) handles speech, music, and program material without significant coloration.

Design & Installation

Built into a compact 366 × 366 mm square footprint with 223 mm mounting depth, the Control 321C fits standard ceiling grids with minimal protrusion. The metal baffle with pre-mounted drivers and ported design ensures structural integrity and field reliability, while the removable locking connector with screw-down terminals simplifies wiring for both input and loop-output configurations in venues or installed systems.

Key Features

• 12-inch Kevlar-reinforced woofer with 50 mm voice coil
• 25 mm compression driver with coaxial integration
• 1.8 kHz third-order crossover (18 dB/octave)
• Frequency response 47 Hz – 16 kHz (±3 dB)
• 94 dB sensitivity (1 kHz – 16 kHz)
• Maximum SPL: 118 dB (1m) / 124 dB peak
• 90° conical constant-directivity coverage pattern
• 250W long-term / 1000W peak power capacity
• 5.6 ohm impedance
• Compact square baffle: 366 × 366 mm, 223 mm depth
• Metal ported baffle with drivers pre-mounted
• Removable locking connector with dual terminals

The Control 321C delivers professional-grade coverage in a straightforward, maintenance-friendly package built for live venue and permanent install applications.