8" Coaxial Ceiling Loudspeaker with HF Compression Driver
Control 328CT has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker.
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 Kevlarreinforced 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.
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.