Control 328C has 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 seemlessly 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.
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
200 mm (8 in) woofer with Kevlarreinforced cone and 50 mm (2 in) voice-coil
25 mm (1 inch 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
Loudspeaker Mount Type - Ceiling
Frequency Range (-10 dB):
45 Hz – 18 kHz In half space (in ceiling)
Frequency Response (±3 dB):
60 Hz – 16 kHz In half space (in ceiling)
Coverage Pattern:
120 degree conical, broadband Average 1 kHz to 10 kHz
Directivity Factor (Q):
7.0 (Avg 1k - 16kHz)
Directivity Index (DI):
8.5dB (Avg 1k - 16kHz)
Long-Term System, Power Rating, IEC3:
250 W (1000 W peak), 2 hrs; 150 W (600 W peak), 100 hrs
Sensitivity (2.83V@ 1m):
93 dB measured half-space; 98 dB computed for competitive comparison
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:
8 ohms
Transducer Low Frequency Driver:
Kevlar reinforced cone, 50 mm (2 in) voice coil.
Transducer High Frequency Driver:
JBL 2412H-1 compression driver, 25 mm (1 in) voice coil
connector type:
Removable locking connector with screw-down terminals. Max wire 12 AWG (2.5 mm2)
Dimensions (H x W x D):
305 mm (12.0 in) diameter round baffle x depth from back of baffle of 160 mm (6.3in) on 328C
