JBL Control 328CT Ceiling Loudspeaker

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.

分類: JBL, JBL

描述

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.
Optional Accessories	MTC-RG6/8 Grille, round contoured, white. MTC-SG6/8 Grille, square, contoured, white. MTC-300BB8 Backbox, 25 liters (1 cubic feet)
Plenum Usage	Yes, with accessory backcan