View larger image of JBL Control 328CT — official product photo
23 attributes
| Attribute | Value |
|---|---|
| Model | Control 328CT |
| 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 |
|---|
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