Description
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.
Product Specifications:
Frequency Range (-10dB): 45 Hz – 18 kHz
Transformer Taps: 68W, 34W, 17W, (& 8.5W @ 70V)
Frequency Response (±3 dB): 60Hz – 16 kHz
Coverage Angle: 120° conical, constant directivity
Impedance: 8 ohms
Directivity Factor (Q): 7.0 (Avg 1k - 16kHz)
Directivity Index (DI): 8.5dB (Avg 1k - 16kHz)
Sensitivity: 93 dB (1 kHz - 16 kHz)
Maximum SPL (1m): 118 dB (top 70V/100V tap)
Crossover Network: 1.9 kHz, 3rd order (18 dB/oct) high-pass plus conjugate
Dimensions (H x W x D): 305 mm (12.0 in.)
Input Connectors: Screw locking barrier strip for bare wire
Drivers: LF Driver: 200 mm (8 in)
HF Driver: compression driver, 25 mm (1 inch) coil
Color: White
Backcan: formed steel (wood-lined; accessory)
Baffle/Rim: Metal, round, driver pre-mounted to baffle, ported.
Ceiling Cutout Size: 310 mm (12.2 in) diameter (for MTC-300BB8 backcan)
Included Accessories: Ported baffle pre-attached, plus transformer on 328CT.
Plenum Usage: Yes, with accessory backcan
Financing Options
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Military & First Responder Discounts
We're proud to support those who serve. Active-duty military, veterans, and first responders qualify for a special discount on your gear. See our Military Discount details here and how to redeem.