JBL Control 328CT 8in Coaxial Ceiling Loudspeaker

About: JBL Control 328CT 8in Coaxial Ceiling Loudspeaker

Control 328C and Control 328CT have been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker. The combination of the low frequency cone and the shaped mounting baffle performs as a true 12 inch (300 mm) diameter waveguide for the high frequencies. A unique metal throat transitions seamlessly to the horn to eliminate high frequency beaming which is common among this category of speaker. The result is a coaxial speaker with wide, extremely consistent 120° coverage on a broadband basis.

Component features include a Kevlar- reinforced low frequency cone for reliability, well-damped surround for smooth

frequency response, high temperature voice-coil and a reduced distortion design through saturated-gap magnet geometry.

The high frequency driver features a pure titanium diaphragm for high sensitivity and long life, with diamond surround for resonance control and FerroFluidTM for increased power handling.

The Control 328C and Control 328CT are easy to install. The removable multi-pin locking connector, with secure screw-down terminals, allows for pre-wiring the input wires for easy clip-on convenience during installation.

The clean, contemporary look of the optional MTC-RG6/8 round grille is designed to suit high-end venues, offering a simple, elegant appearance that fits into a wide variety of décors.

The optional MTC-300BB8 one cubic foot backcan is made of extra-thick 16 gauge steel and the top is lined with 1⁄2” medium density fiberboard.

The transformer version Control 328CT comes with a pre-attached top quality, low saturation 68 Watt multi-tap transformer for 70V/100V distributed speaker lines.

To ensure long life and reliability, Control 328C/CT passes JBL’s 100-hour torture power test, the toughest standard in the industry.

Features

• Consistent 120° broadband pattern control covers an extremely large area.
• Shaped mounting baffle provides the pattern control of a 300 mm (12 in) horn from a 200 mm (8 in) driver.
• Components
  • 200 mm (8 in) woofer with Kevlarre inforced cone and 50 mm (2 in) voice-coil.
  • 25 mm (1" exit) compression driver.
• Extraordinary clarity for speech and vocals with extended frequency response for music.
• 250 Watt power handling with very high sensitivity provides high SPL capability.
• Advanced high-slope crossover network for constant coverage and smooth, natural midrange.
• Clean, contemporary grille and optional backbox available.

Specifications

• Frequency Range (-10dB) -  45 Hz – 18 kHz
• Power Rating -  See transformer taps
• Transformer Taps -  68W, 34W, 17W, (& 8.5W @ 70V)
• Frequency Response (±3 dB) -  60Hz – 16 kHz
• Coverage Angle -  120° conical, constant directivity
• Impedance -  8 ohms
• Directivity Factor (Q) -  7.0 (Avg 1k - 16kHz)
• Directivity Index (DI) -  8.5dB (Avg 1k - 16kHz)
• Sensitivity -  93 dB (1 kHz - 16 kHz)
• Maximum SPL (1m) -  118 dB (top 70V/100V tap)
• Crossover Network -  1.9 kHz, 3rd order (18 dB/oct) high-pass plus conjugate
• Dimensions (H x W x D) -  305 mm (12.0 in.) diameter round baffle x depth from back of baffle of 218 mm (8.6 in)
• Input Connectors -  Screw locking barrier strip for bare wire
• Drivers
  • LF Driver: 200 mm (8 in)
  • HF Driver: compression driver, 25 mm (1 inch) coil
• Color -  White
• Safety Agency -  Suitable for use in air handling spaces per UL1480, UL2043, NFPA90 & NFPA 70 when installed with UL listed backcan such as JBL MTC-300BB8. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
• Backcan -  formed steel (wood-lined; accessory)
• Baffle/Rim -  Metal, round, driver pre-mounted to baffle, ported.
• Ceiling Cutout Size -  310 mm (12.2 in) diameter (for MTC-300BB8 backcan)
• Included Accessories -  Ported baffle pre-attached, plus transformer on 328CT.
• Plenum Usage -  Yes, with accessory backcan