JBL Control 328CT 8" 2-Way 250W Coaxial 70V/100V Ceiling Speaker

BH #JBC328CT • MFR #CONTROL 328CT
JBL
JBL Control 328CT 8" 2-Way 250W Coaxial 70V/100V Ceiling Speaker
Key Features
  • Passive Design
  • 8" Woofer with Kevlar-Reinforced Cone
  • High-Frequency Compression Driver
  • 250W Program (1000W Peak) Power Capacity
The JBL Control 328CT is a passive 8" 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 328CT is equipped with a durable 8" Kevlar-reinforced cone and a titanium-diaphragm compression driver, yielding an extended frequency response of 60 Hz to 16 kHz.

The cone and pre-attached baffle serve as a high-frequency waveguide, which results in reliable 120° 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.

Special Order
Expected availability: 7-10 business days
$328.00

Important Notice

  • This item is noncancelable and nonreturnable.

JBL Control 328CT 8" 2-Way 250W Coaxial 70V/100V Ceiling Speaker

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JBL Control 328CT Overview

The JBL Control 328CT is a passive 8" 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 328CT is equipped with a durable 8" Kevlar-reinforced cone and a titanium-diaphragm compression driver, yielding an extended frequency response of 60 Hz to 16 kHz.

The cone and pre-attached baffle serve as a high-frequency waveguide, which results in reliable 120° 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.

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 8" Kevlar-reinforced cone with 2" voice coil
Low-frequency cone and shaped mounting baffle perform as a true 12" diameter waveguide for the 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 120° coverage on a broadband basis
Built-in crossover network with 18 dB/octave high-pass filter and 12 dB/octave low-pass filter
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-RG6/8 and MTC-SG6/8 grilles, and MTC-300BB8 backbox (all available separately)

JBL Control 328CT Specs

Active or PassivePassive
LF Driver8" / 20 cm Woofer with Kevlar-Reinforced Cone and 2" / 5 cm Voice Coil
HF DriverJBL 2412H-1 Compression Driver with 1" / 2.5 cm Voice Coil
Frequency Range45 Hz to 18 kHz (-10 dB)
Frequency Response60 Hz to 16 kHz (±3 dB)
Coverage Pattern120° Conical, Broadband
Directivity Factor7 (1 to 16 kHz)
Directivity Index8.5 dB (1 to 16 kHz)
Power CapacityFor 2 Hours: 250 W (1000 W Peak)
For 100 Hours: 150 W (600 W Peak)
SensitivityMeasured Half-Space: 93 dB (2.83 V at 1 m)
Computed for Competitive Comparison: 98 dB (2.83 V at 1 m)
Maximum SPL118 dB Continuous Average (124 dB Peak)
ImpedanceNot applicable
Transformer TapsWatts at 70 V: 8.5, 17, 34, 68
Watts at 100 V: 17, 34, 68
CrossoverFrequency: 1.9 kHz
Low-Pass Filter: 2nd Order (12 dB/Octave)
High-Pass Filter: 3rd Order (18 dB/Octave)
InputRemovable Locking Connector with Screw-Down Terminals
Maximum Wire Size12 AWG
ShieldedNo
BaffleMaterial: Metal
Diameter: 12" / 30.5 cm
Dimensions (Diam. x Depth)12.0 x 8.6" / 30.5 x 21.8 cm from Back of Baffle
Weight12 lb / 5.4 kg
Safety RatingUL 1480, UL 2043, NFPA 90, and NFPA 70 when Installed with a UL-Listed Backcan
S7232/UL, UL 1876, IEC 60849 / EN 60849
Packaging Info
Package Weight16.85 lb
Box Dimensions (LxWxH)15.5 x 15 x 12.75"
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