8" Coaxial Ceiling Loudspeaker with HF Compression Driver
Control 328CT has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker.
Control 328CT has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker.
Size | ||||
Control 300 Brochure
updated: Mar 2024
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2,9 MB | |||
Control 328C_CT Spec Sheet
updated: Mar 2024
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720 KB | |||
Control 328C-CT Backcan Assembly Instructions
updated: Mar 2024
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539 KB | |||
Control 300 Transformer Bypass
updated: Mar 2024
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59,2 KB | |||
Control 300 Transformer Insertion Loss
updated: Mar 2024
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15,4 KB | |||
Control 300 User Guide
updated: Mar 2024
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2,02 MB | |||
Specifications | ||||
Control 328C/CT Spec Sheet
updated: Apr 2019
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720 KB | |||
Manuals | ||||
Transformer Bypass on Control 321CT, Control 322CT, or Control 328CT
updated: Okt 2019
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59,2 KB | |||
Control 300 Series Transformer Insertion Loss Chart
updated: Okt 2019
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15,4 KB | |||
Ceiling Speaker Accessory Guide
version B,
updated: Jan 2024
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231 KB | |||
Brochures | ||||
Control 300 Brochure
updated: Apr 2019
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2,9 MB | |||
CAD Drawings | ||||
Control 300 Ceiling Speakers
updated: Okt 2019
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1,39 MB | |||
Compliances | ||||
JBL Control Series Passive Speakers DoC
updated: Des 2019
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179 KB | |||
Control 300 Series Declaration of Conformity
updated: Okt 2019
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92,7 KB | |||
Software | ||||
Distributed System Design (DSD)
version 3.7,
updated: Nov 2023
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1,07 MB | |||
User Guides | ||||
Control 300 User Guide
updated: Apr 2019
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2,02 MB | |||
Speaker Tunings | ||||
Commercial, CBT, and AWC Tunings 220616
version A,
updated: Mei 2023
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557 KB | |||
Install Guides | ||||
Control 328C/CT Assembly Guide
updated: Apr 2019
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539 KB |
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Frequency Range (-10dB) | 45 Hz – 18 kHz |
Power Rating | See transformer taps |
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.) diameter round baffle x depth from back of baffle of 218 mm (8.6 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 |
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) |
Included Accessories | Ported baffle pre-attached, plus transformer on 328CT. |
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 |
Professional Series
For use on either 70V or 100V distributed loudspeaker lines.