Description
The JBL Control 321CT is a high-performance coaxial point source ceiling loudspeaker engineered to deliver exceptional next-generation audio performance. It is designed for professional and commercial installations where clear speech, powerful vocals, and extended music response are required.
The Control 321CT features a 300 mm / 12-inch woofer with a Kevlar-reinforced cone and a 25 mm / 1-inch compression driver, delivering excellent clarity and strong output performance. Its consistent 90° broadband pattern control ensures smooth and uniform coverage across the listening area.
With 250 W power handling, high sensitivity, and an advanced high-slope crossover network, the Control 321CT provides high SPL capability with smooth, natural midrange performance. It also includes an integrated transformer, making it suitable for distributed audio systems.
More Information
Key Features
- Coaxial point source ceiling loudspeaker
- Designed for next-generation audio performance
- Consistent 90° broadband pattern control
- 300 mm / 12 in woofer
- Kevlar-reinforced woofer cone
- 50 mm / 2 in woofer voice coil
- 25 mm / 1 in exit compression driver
- Excellent clarity for speech and vocals
- Extended frequency response for music
- 250 W power handling
- High sensitivity for strong SPL output
- Advanced high-slope crossover network
- Constant coverage performance
- Smooth and natural midrange
- Integrated transformer on 321CT
- Clean, contemporary grille design
- Optional backbox available
- Suitable for professional and commercial ceiling installations
Technical Specification
- Model: JBL Control 321CT
- System Type: Coaxial point source ceiling loudspeaker
- Frequency Range (-10 dB): 34 Hz – 18 kHz
- Frequency Response (±3 dB): 47 Hz – 16 kHz
- Power Rating:
- 250 W continuous pink noise, 1000 W peak, 2 hrs
- 200 W continuous pink noise, 800 W peak, 100 hrs
- Transformer Taps: 68 W, 34 W, 17 W, and 8.5 W at 70V
- Sensitivity: 94 dB, 1 kHz – 16 kHz
- Coverage Angle: 90° conical, constant directivity
- Directivity Factor (Q): 8.7, 1 kHz – 16 kHz
- Directivity Index (DI): 9.4 dB, 1 kHz – 16 kHz
- Maximum SPL: 118 dB at top 70V/100V tap
- Crossover Network: 1.8 kHz
- High-Pass Filter: 3rd order, 18 dB/oct with conjugate to HF
- Low-Pass Filter: 2nd order to LF
- Input Connectors: Screw locking barrier strip for bare wire
- LF Driver: 300 mm / 12 in woofer
- HF Driver: Compression driver with 25 mm / 1 in coil
- Dimensions: 366 × 366 mm / 14.4 × 14.4 in square baffle
- Depth: 240 mm / 9.5 in from back of baffle
- Ceiling Cutout Size: 378 × 378 mm / 14.9 × 14.9 in for MTC-300BB12 backcan
- Color: White
- Backcan: Formed steel, wood-lined, accessory
- Baffle / Rim: Metal, driver pre-mounted to baffle, ported
- Plenum Usage: Yes, with accessory backcan
