JBL Control 321CT 12" 2-Way 250W Coaxial 70V/100V Ceiling Speaker
Features
- Passive Design.
- 12" Woofer with Kevlar-Reinforced Cone.
- High-Frequency Compression Driver.
- 250W Programme (1000W Peak) Power Capacity.
- For 70V/100V Power Amplifiers.
Description
The JBL Control 321CT 12" 2-Way 250W Coaxial 70V/100V Ceiling Speaker coaxial ceiling speaker with a multi-tap transformer designed for voice amplification and foreground music reproduction in waiting rooms, offices, retail stores, and restaurants. With a low-saturation transformer for compatibility with a 70V/100V power amplifier (available separately), this 2-way speaker provides a long-term power capacity of 250W (1000W peak). The Control 321CT is equipped with a durable 12" Kevlar-reinforced cone and a titanium-diaphragm compression driver, yielding an extended frequency response of 47 Hz to 16 kHz.
The cone, which also serves as a waveguide, results in reliable 90° broadband coverage while the built-in crossover network ensures proper frequency distribution to the speaker components. A removable locking connector with screw-down terminals ensures easy wiring at the desired power tap setting.
Key Features:
- Coaxial ceiling speaker with pre-attached ported baffle
- Low-saturation 68W multi-tap transformer enables use with 70V/100V constant-voltage systems
- Long-term power handling of 250W (1000W peak)
- Durable 12" Kevlar-reinforced cone serves as a waveguide for high frequencies
- Metal throat transitions smoothly to the horn to eliminate high-frequency beaming
- High-temperature voice coil
- High-frequency driver features a pure titanium diaphragm for high sensitivity and long life, a diamond surround for resonance control, and FerroFluid for increased power handling
- Consistent 90° coverage on a broadband basis
- Built-in crossover network with 18 dB/octave high-pass filter and 12 dB/octave low-pass filter
- Integrated EZRail temporarily holds one side of the speaker baffle in place until the installer can affix the baffle to the backcan with screws
- Removable multi-pin locking connector with secure screw-down terminals allows pre-wiring of inputs for easy clip-on convenience during installation
- Compatible with MTC-300SG12 grille, and MTC-300BB12 backbox (both available separately)
Specifications
| Active or Passive | Passive |
| LF Driver | 12" / 30 cm Woofer with Kevlar-Reinforced Cone and 2" / 5 cm Voice Coil |
| HF Driver | JBL 2412H-1 Compression Driver with 1" / 2.5 cm Voice Coil |
| Frequency Range | 34 Hz to 18 kHz (-10 dB) |
| Frequency Response | 47 Hz to 16 kHz (±3 dB) |
| Coverage Pattern | 90° Conical, Broadband (Average 1 to 16 kHz) |
| Directivity Factor | 8.7 (1 to 16 kHz) |
| Directivity Index | 9.4 dB (1 to 16 kHz) |
| Power Capacity | For 2 Hours: 250 W (1000 W Peak) For 100 Hours: 200 W (800 W Peak) |
| Sensitivity | Measured Half-Space: 94 dB (2.83 V at 1 m) Computed for Competitive Comparison: 99 dB (2.83 V at 1 m) |
| Maximum SPL | 118 dB Continuous Average (124 dB Peak) |
| Impedance | Not applicable |
| Transformer Taps | Watts at 70 V: 8.5, 17, 34, 68 Watts at 100 V: 17, 34, 68 |
| Insertion Loss | 0.9 dB typical |
| Crossover | Frequency: 1.8 kHz Low-Pass Filter: 2nd Order (12 dB/Octave) High-Pass Filter: 3rd Order (18 dB/Octave) |
| Input | Removable Locking Connector with Screw-Down Terminals |
| Maximum Wire Size | 12 AWG |
| Shielded | No |
| Baffle | Material: Metal Dimensions: 14.4 x 14.4" / 36.6 x 36.6 cm |
| Dimensions (H x W x D) | 14.4 x 14.4 x 9.4" / 36.6 x 36.6 x 24.0 cm |
| Weight | 18 lb / 8.2 kg |
| Safety Rating | UL 1480, UL 2043, NFPA 90, and NFPA 70 when Installed with a UL-Listed Backcan S7232/UL, UL 1876, IEC 60849 / EN 60849 |
In The Box
- JBL Control 321CT 12" 2-Way 250W Coaxial 70V/100V Ceiling Speaker.
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Details
- Product: JBL Control 321CT 12" 2-Way 250W Coaxial 70V/100V Ceiling Speaker
- Manufacturer: JBL
- Model: CONTROL321CT
- SKU: CONTROL321CT
- RM Product #: 64856
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