JBL Control 312CS High-Output 12 in. In-Ceiling Subwoofer Loudspeaker


Control 312CS is an excellent addition to JBL Control 321, 322 and 328 loudspeaker systems, or any fullrange loudspeaker system that requires extended bass response

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  • Kevlar-reinforced 300 mm (12 inch) subwoofer driver woofer with 75 mm (3 inch) voice-coil.
  • High power handling of 400 Watts with high sensitivity provides high SPL capability.
  • Clean, contemporary grille and optional back box available.


Frequency Range (±3 dB) 34 Hz – 3.5 kHz
Sensitivity (1W, 1m) 99 dB in ceiling near corner, 93 dB in center of ceiling
Frequency Response (-10dB) 30 Hz – 4.5 kHz
Maximum SPL (1m) 125 dB (low-impedance, 131 dB peak, center of ceiling)
119 dB (low-impedance, 125 dB peak near corner) 121 dB (optional MTC-300T150 70V/100V transformer, center of ceiling) 114 dB (optional MTC-300T150 70V/100V transformer, near corner)
Impedance 8 ohms
Power Rating AES Long-Term System Power Rating:
400 W continuous pink noise (1000 W peak), 2 hrs 250 W continuous pink noise (600 W peak), 100 hrs
Input Connectors Screw locking barrier strip for bare wire
Drivers 300 mm (12 in) subwoofer
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)
Included Accessories Ported baffle pre-attached.
Optional Accessories MTC-300SG12 Grille, square contoured, white. MTC-300BB12 Backbox, 80 liters (3 cubic feet)
Plenum Usage Yes, with accessory backcan