JBLControl 328CT

8" Coaxial Ceiling Loudspeaker with HF Compression Driver

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.


·       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

o   200 mm (8 in) woofer with Kevlarre inforced cone and 50 mm (2 in) voice-coil.

o   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 (-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


70V: 68W, 34W, 17W, 8.5W

100V: 68W, 34W, 17W

Frequency Response (±3 dB)

60Hz – 16 kHz

Coverage Pattern

120° conical, broadband

Nominal Impedance (321C)

8 ohms

Directivity Factor (Q)

7.0 (Avg 1k - 16kHz)

Directivity Index (DI)

8.5dB (Avg 1k - 16kHz)

Sensitivity (2.83V@ 1m)

93 dB measured half-space

Maximum SPL

118 dB cont ave (124 dB peak)

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)