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JBL Control 328C 8" 2-Way 250W Coaxial Ceiling Speaker

BH #JBC328C • MFR #CONTROL 328C
JBL Control 328C 8" 2-Way 250W Coaxial 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 328C is a passive 8" coaxial ceiling speaker designed for voice amplification and foreground music reproduction in waiting rooms, offices, retail stores, and restaurants. When driven by an 8-Ohm power amplifier (available separately), this 2-way speaker provides a long-term power capacity of 250W (1000W peak). The Control 328C 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 simple wiring for the input and loop output.

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JBL Control 328C Overview

The JBL Control 328C is a passive 8" coaxial ceiling speaker designed for voice amplification and foreground music reproduction in waiting rooms, offices, retail stores, and restaurants. When driven by an 8-Ohm power amplifier (available separately), this 2-way speaker provides a long-term power capacity of 250W (1000W peak). The Control 328C 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 simple wiring for the input and loop output.

Coaxial ceiling speaker with pre-attached ported baffle
For use with 8-Ohm power amplifiers
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 328C 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)
Impedance8 Ohms
Transformer TapsNot applicable
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
Dimensions12.0 x 6.3" / 30.5 x 16.0 cm from Back of Baffle
Weight10 lb / 4.5 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 Weight14.6 lb
Box Dimensions (LxWxH)15.6 x 15.4 x 12.9"

JBL Control 328C Reviews

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question

328c need backbox?
Asked by: Anonymous
No you do not. But you might want to get the front grill. JBL MTC-RG6/8.
Answered by: John P.
Date published: 2018-08-27
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