JBL Control 328CT 8" Coaxial 2-WAY Ceiling Spk W Transformer

JBL Control 328CT 8" Coaxial 2-Way Ceiling Speaker with Transformer

The Control 328CT is a compact, professionally engineered ceiling-mount speaker built for distributed audio systems in venues, institutional spaces, and commercial installations where reliable sound reinforcement matters. Its coaxial driver configuration delivers consistent coverage across medium-sized rooms while the integrated 70V/100V transformer simplifies integration into existing speaker line networks. The compact 12-inch diameter footprint fits standard ceiling infrastructure without requiring extensive modification.

Audio Performance & Coverage

This speaker delivers 93 dB sensitivity at 1 kHz with a 120° broadband pattern control coverage, ensuring even sound distribution across the listening area. The 8-inch Kevlar-reinforced woofer paired with a 25mm compression driver produces a frequency response of 60 Hz – 16 kHz (±3 dB), with extended range down to 45 Hz and up to 18 kHz, making it suitable for speech, music, and mixed-content applications in live and installed sound scenarios.

Installation & System Integration

The 68-watt multi-tap transformer enables direct connection to 70V or 100V distributed speaker lines, eliminating the need for external transformers and reducing on-site complexity. The speaker supports a long-term power capacity of 250W with 1000W peak capability, providing headroom in larger system designs. Standard 8-ohm impedance and a 310 mm (12.2-inch) ceiling cutout accommodate the MTC-300BB8 backcan for secure, flush installation.

Key Features

• 8-inch Kevlar-reinforced woofer with 50mm (2-inch) voice coil
• 25mm (1-inch exit) compression driver with coaxial configuration
• Frequency response: 60 Hz – 16 kHz (±3 dB); extended range 45 Hz – 18 kHz (-10 dB)
• 120° broadband pattern control coverage
• 93 dB sensitivity at 1 kHz
• 8-ohm impedance
• 68-watt multi-tap transformer for 70V/100V distributed speaker lines
• 250W long-term power capacity; 1000W peak power handling
• 12-inch diameter × 8.6-inch depth (305 × 218 mm)
• 310 mm (12.2-inch) ceiling cutout for standard backcan installation
• Metal round baffle with pre-mounted drivers on ported enclosure

The Control 328CT combines JBL's proven coaxial design with practical system-level features that make it a dependable choice for venues, schools, offices, and other spaces requiring consistent ceiling-mounted audio that will hold up under regular use.