JBL Professional Control 328C

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8" Coaxial Ceiling Loudspeaker with HF Compression Driver

Control 328C has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker.

Features

Consistent 120° broadband pattern control covers an extremely large area.
Shaped mounting baffle provides the pattern control of a 300 mm (12 in) horn from a 200 mm (8 in) driver.
Components
• 200 mm (8 in) woofer with Kevlarre inforced cone and 50 mm (2 in) voice-coil.
• 25 mm (1" exit) compression driver.
Extraordinary clarity for speech and vocals with extended frequency response for music.
250 Watt power handling with very high sensitivity provides high SPL capability.
Advanced high-slope crossover network for constant coverage and smooth, natural midrange.
Clean, contemporary grille and optional backbox available.

Downloads

	Version	Language	Size	Uploaded
Specifications
Control 328C/CT Spec Sheet updated: 4月 2019			720KB	4月 2019
Manuals
Compatible Third-Party Backboxes for Control 300 Series Speakers updated: 10月 2019			128KB	10月 2019
Ceiling Speaker Accessory Guide updated: 10月 2019			127KB	10月 2019
Brochures
Control 300 Brochure updated: 4月 2019			2.9MB	4月 2019
Control Contractor Brochure (2023) version B, updated: 6月 2023	B		8.18MB	6月 2023
CAD Drawings
Control 300 Ceiling Speakers updated: 10月 2019			1.39MB	10月 2019
Compliances
JBL Control Series Passive Speakers DoC updated: 12月 2019			179KB	12月 2019
Control 300 Series Declaration of Conformity updated: 10月 2019			92.7KB	10月 2019
Software
Distributed System Design (DSD) v3.6.2 version 3.6.2, updated: 9月 2021	3.6.2		805KB	9月 2021
Speaker Tunings
Commercial, CBT, and AWC Tunings 220616 version A, updated: 5月 2023	A		557KB	5月 2023
Ease Data
Ease SPK/DLL Files - Full JBL Pro Line updated: 3月 2022			21MB	3月 2022
Install Guides
Control 328C/CT Assembly Guide updated: 4月 2019			539KB	4月 2019

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Parts & Service

Specifications

Frequency Range (-10dB)	45 Hz – 18 kHz
Power Rating	IEC Long-Term System Power Rating: 250 W continuous pink noise (1000 W peak), 2 hrs 150 W continuous pink noise (600 W peak), 100 hrs
Sensitivity	93 dB (1 kHz - 16 kHz)
Frequency Response (±3 dB)	60Hz – 16 kHz
Coverage Angle	120° conical, constant directivity
Directivity Factor (Q)	7.0 (Avg 1k - 16kHz)
Directivity Index (DI)	8.5dB (Avg 1k - 16kHz)
Maximum SPL (1m)	118 dB (124 dB peak)
Crossover Network	1.9 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF
Impedance	8 ohms
Dimensions (H x W x D)	305 mm (12.0 in.) diameter round baffle x depth from back of baffle of 160 mm (6.3in)
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
Safety Agency	Suitable for use in air handling spaces per UL1480, UL2043, NFPA90 & NFPA 70 when installed with UL listed backcan such as JBL MTC-300BB8. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
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)
Optional Accessories	MTC-RG6/8 Grille, round contoured, white. MTC-SG6/8 Grille, square, contoured, white. MTC-300BB8 Backbox, 25 liters (1 cubic feet)
Plenum Usage	Yes, with accessory backcan