JBL CONTROL 321C | 12inch Coaxial Ceiling Loudspeaker with HF Compression Driver

The JBL Control 321C is a state-of-the-art 12-inch coaxial ceiling loudspeaker designed to offer superior sound quality and reliability. Engineered with high-end components and advanced crossover technologies, this loudspeaker ensures extraordinary clarity for both speech and music applications. Whether installed in a commercial setting, educational institution, or entertainment venue, the JBL Control 321C provides consistent performance and ease of installation.

With its consistent 90-degree broadband pattern control and high sensitivity, this ceiling loudspeaker delivers high SPL capability with minimal distortion. The 300 mm (12 in) woofer features a Kevlar-reinforced cone and a robust 50 mm (2 in) voice coil. Complemented by a 25 mm (1 in) exit compression driver, this speaker ensures a full-range frequency response and excellent vocal clarity. The clean, contemporary grille design allows the JBL Control 321C to blend seamlessly into any setting, while optional backbox accessories provide additional installation flexibility.

When it comes to rigorous audio performance, the JBL Control 321C stands out with its advanced high-slope crossover network. This technology ensures constant coverage and a smooth, natural midrange, making it an ideal choice for venues requiring excellent sound reproduction. Capable of handling 250 Watts of power with a high sensitivity that provides robust output, this loudspeaker is designed to meet the demanding needs of various audio environments.

Key Features

• Consistent 90° broadband pattern control
• 300 mm (12 in) woofer with Kevlar-reinforced cone
• 25 mm (1 in) exit compression driver
• Extraordinary clarity for speech and vocals
• Extended frequency response for music
• 250 Watt power handling with high sensitivity
• Advanced high-slope crossover network
• Clean, contemporary grille design
• Optional backbox available

Specifications

• Frequency Range (-10 dB): 34 Hz – 18 kHz
• Power Rating: 200 W (600 W peak), 100 hrs
• Sensitivity (2.83V@ 1m): 94 dB measured half-space, 99 dB computed for competitive comparison
• Frequency Response (±3 dB): 47 Hz – 16 kHz
• Coverage Pattern: 90° conical, broadband (Avg 1k - 16kHz)
• 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
• Nominal Impedance: 8 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)

Package Contents

• One JBL Control 321C Coaxial Ceiling Loudspeaker
• User manual
• Installation hardware
• Optional backbox (if selected)