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JBL 12 Inch Premium Coax Ceiling Speaker

Product Code JBCONTROL321C
Manufacturer JBL

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The Control 321C has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker.

Key Features

  • Consistent 90° broadband pattern control.
  • Components: 300 mm (12 in) woofer with Kevlar-reinforced cone with 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 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): 34 Hz - 18 kHz
  • Power Rating: 200 W (600 W peak), 100 hrs
  • Sensitivity (2.83V@ 1m): 94 dB measured half-space. 99 dB computed for competitive comparison.
  • Frequency Response (±3 dB): 47 Hz - 16 kHz
  • Coverage Pattern: 90° conical, broadband (Avg 1k - 16kHz)
  • Directivity Factor (Q): 8.7 (1k - 16kHz)
  • Directivity Index (DI): 9.4 dB (1k - 16kHz)
  • Crossover Network: 1.8 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF
  • Nominal Impedance: 8 ohms
  • 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 223 mm (8.8 in)

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