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JBL Control 321CT Coaxial Ceiling Speaker
JBL Control 321CT 12-Inch Ceiling Speaker

JBL Control 321CT 12-Inch Ceiling Speaker

SoundPro Item: 46667
MSRP: $615.41
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Control 321CT has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker. The low frequency cone 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 extremely consistent 90° coverage on a broadband basis.

JBL Control 321CT Features

  • Consistent 90° broadband pattern control
  • Extraordinary clarity for speech and vocals with extended frequency response for music
  • 250 Watt power handling with 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
  • Transformer Taps
    • 70V: 68W, 34W, 17W, 8.5W
    • 100V: 68W, 34W, 17W
  • Components
    • 300 mm (12 in) woofer with Kevlar-reinforced cone with 50 mm (2 in) voice-coil
    • 25 mm (10 exit) compression driver
  • Control 321CT Coaxial Ceiling Speaker1
  • Ported baffle pre-attached1
  • Transformer on 321CT1
  • Frequency Range (-10dB) 34 Hz – 18 kHz
  • Power Rating IEC Long-Term System Power Rating: 250 W continuous pink noise (1000 W peak), 2 hrs 200 W continuous pink noise (800 W peak), 100 hrs
  • Transformer Taps 68W, 34W, 17W, (& 8.5W @ 70V)
  • Frequency Response (±3 dB) 47 Hz – 16 kHz
  • Coverage Angle 90° conical, constant directivity
  • Directivity Factor (Q) 8.7 (1k - 16kHz)
  • Directivity Index (DI) 9.4 dB (1k - 16kHz)
  • Sensitivity 94 dB (1 kHz - 16 kHz)
  • Crossover Network 1.8 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF
  • Dimensions (H x W x D) 366 x 366 mm (14.4 x 14.4 in) square baffle x depth from back of baffle of 240 mm (9.5 in)
  • Maximum SPL (1m) 118 dB (top 70V/100V tap)
  • Input Connectors Screw locking barrier strip for bare wire
  • Drivers
    • LF Driver: 300 mm (12 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-300BB12. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
  • Backcan formed steel (wood-lined; accessory)
  • Baffle/Rim Metal, driver pre-mounted to baffle, ported.
  • Ceiling Cutout Size 378 x 378 mm (14.9 x 14.9 in) (for MTC-300BB12 backcan)
  • Plenum Usage Yes, with accessory backcan

In The Box

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