Overview
The JBL Control 328CT is a coaxial 250-watt point source design ceiling loudspeaker with a built-in 70V/100V transformer, featuring an 8" low frequency cone performing as a waveguide for the high frequencies. The unique metal throat provides seamless transition to the horn, eliminating any aberrant HF "beaming", and resulting in consistent 120° coverage on a broadband basis with true coaxial behavior.
Features
- Coaxial ceiling speaker with 1" HF compression driver and consistent 120° broadband pattern control
- Built-in 70V/100V multi-tap transformer with 7.5W/15W/30W/60W 70V taps, 15W/30W/60W 100V taps
- 8" Kevlar-reinforced cone with 2" voice coil, shaped mounting baffle provides pattern cintrol of 12" horn from 8" driver
- 250-watt power handling with high sensitivity and high SPL capability
- Advanced high-slope crossover network for constant coverage and natural midrange
- Baffle equipped with EZRail(TM) feature, holds baffle in place while securing to backcan with screws
- Removable multi-pin locking connector with screw-down terminals for simplified pre- or re-wiring during installation
- Recommended for applications requiring speech and vocal clarity, extended frequency response for foreground and background music
Specs
| Frequency Response | 60 Hz - 16 kHz, +/-3dB |
| Maximum Power Handling | 600 Watts long-term, 100 hrs. 1000 Watts pink noise, 2 hrs. |
| Impedance | 8 Ohms |
| SPL | 118dB avg., 124dB peak |
| Beamwidth | 120° conical, broadband (1kHz - 10kHz) |
| Horizontal Beamwidth | 120° conical, broadband (1kHz - 10kHz) |
| Vertical Beamwidth | 120° conical, broadband (1kHz - 10kHz) |
| Directivity | Factor: 7.0 (1kHz - 16kHz) Index: 8.5dB (1kHz - 16kHz) |
| Construction | Kevlar-reinforced cone woofer Titanium diaphragm compression driver with diamond surround and ferro-fluid cooling Ported Metal Baffle |
| Magnet | Saturated-gap geometry |
| Voice Coil | LF: 2" HF: 1" |
| Dimensions (HxWxD) | 12 x 12 x 8.6" (305 x 305 x 218mm) |
| Weight | 12 lb (5.4 kg) |
