The Control 321CT is a 12-inch coaxial ceiling loudspeaker featuring a high-frequency compression driver. The design integrates a coaxial point source configuration intended for ceiling installation.

• 90° broadband pattern control
• 300 mm (12 in) woofer with Kevlar-reinforced cone and 50 mm (2 in) voice coil
• 25 mm (1 in) compression driver
• Extraordinary clarity for speech and vocals, extended frequency response for music
• 250 Watt power handling with high sensitivity for high SPL
• Advanced high-slope crossover for constant coverage and natural midrange

Frequency Range	34 Hz – 18 kHz
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	47 Hz – 16 kHz (±3 dB)
Coverage Angle	90° conical, constant directivity
Directivity Factor (Q)	8.7 (1 kHz - 16 kHz)
Directivity Index (DI)	9.4 dB (1 kHz - 16 kHz)
Sensitivity	94 dB (1 kHz - 16 kHz)
Crossover Network	1.8 kHz, 3rd order (18 dB/oct) high-pass with conjugate to HF, 2nd order low-pass to LF
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
Safety Agency	UL1480, UL2043, NFPA90 & NFPA 70 compliant; UL Listed Signaling Speaker; Transformer UL registered per UL1876; IEC60849/EN60849 compliant
Plenum Usage	Yes, with accessory backcan