JBL CONTROL 328C | 8 inch Coaxial Ceiling Loudspeaker with HF Compression Driver

The JBL CONTROL 328C is a top-of-the-line 8 inch coaxial ceiling loudspeaker designed to deliver exceptional audio performance with HF compression driver technology. Engineered from the ground up, this speaker provides a next-generation point-source audio solution for a wide range of applications.

This advanced ceiling loudspeaker features 120° broadband pattern control, ensuring an extensive coverage area with high audio clarity. The unique shaped mounting baffle design delivers pattern control equivalent to a 300 mm (12 inch) horn using a 200 mm (8 inch) driver. This enables exceptional speech and vocal clarity along with an extended frequency response ideal for music playback.

With 250 Watts power handling and high sensitivity, the JBL CONTROL 328C produces high sound pressure levels (SPL) suitable for large venues, conference rooms, and auditoriums. The advanced high-slope crossover network ensures even coverage and a natural midrange response. A contemporary grille and optional backbox complete the design, making it ideal for both performance and architectural integration.

Key Features

• Coaxial Driver Design: Point-source architecture for time-aligned, natural sound
• Kevlar-Reinforced Woofer: 8-inch (200 mm) Kevlar cone with 2-inch (50 mm) voice coil for extended low-frequency performance
• HF Compression Driver: 1-inch (25 mm) driver delivers clear, detailed high-frequency reproduction
• Power Handling: 250 Watt capacity with high sensitivity for demanding applications
• High SPL Capability: High output performance for large-area coverage
• 120° Pattern Control: Wide 120° broadband coverage for consistent sound distribution
• Shaped Mounting Baffle: Provides horn control equivalent to 12-inch (300 mm) systems from an 8-inch driver
• High-Slope Crossover: Advanced crossover ensures smooth response and consistent coverage
• Extended Frequency Response: Optimized for both speech and full-range music playback
• Contemporary Grille: Modern architectural design with optional backbox support
• Commercial Grade Construction: Durable build for long-term installed applications
• Versatile Applications: Suitable for commercial, worship, retail, and public venues

Specifications

• Frequency Range (-10 dB): 45 Hz – 18 kHz
• Long-Term System Power Rating: 250 W (1000 W peak), 2 hrs; 150 W (600 W peak), 100 hrs
• Sensitivity (2.83V @ 1m): 93 dB measured half-space
• Frequency Response (±3 dB): 60Hz – 16 kHz
• Coverage Pattern: 120° conical, broadband
• Directivity Factor (Q): 7.0 (Avg 1k - 16kHz)
• Directivity Index (DI): 8.5dB (Avg 1k - 16kHz)
• Maximum SPL: 118 dB cont ave (124 dB peak)
• Crossover Network: 1.9 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF
• Nominal Impedance (321C): 8 ohms
• Dimensions (H x W x D): 305 mm diameter round baffle x 160 mm depth from back of baffle

Installation / Use Cases

• Commercial audio installations using a coaxial ceiling loudspeaker
• Distributed audio systems requiring in-ceiling speaker solutions
• Retail, hospitality, and office environments using installed sound systems
• Professional AV setups needing ceiling-mounted loudspeakers

Package Contents

• JBL CONTROL 328C ceiling loudspeaker
• Mounting hardware
• Installation guide
• Warranty card