JBL Control 328CT 8 in. Coaxial Ceiling Loudspeaker with Compression Driver and Transformer (Each)
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Description
The JBL Control 328CT is a coaxial ceiling loudspeaker that covers a very large area with consistent 120° pattern control, with a multi-tap transformer for 70V or 100V lines. Its shaped mounting baffle gives a 200 mm (8 in) driver the pattern control of a 300 mm (12 in) horn. Sold in pairs; this listing is for one speaker.
A Kevlar-reinforced 200 mm (8 in) woofer with a 50 mm (2 in) voice coil and a coaxial 25 mm (1 in) exit compression driver give very high sensitivity. The drivers and transformer come mounted on a ported metal baffle that fits the MTC-300BB8 back box; the back box and the round or square grille are sold separately.
Features
- Consistent 120° broadband pattern control
- Shaped baffle gives the pattern control of a 300 mm (12 in) horn
- Kevlar-reinforced 200 mm (8 in) woofer with 50 mm (2 in) voice coil and 25 mm (1 in) exit compression driver
- 250 W power handling with very high sensitivity
- High-slope crossover for constant coverage and a natural midrange
- 70V/100V multi-tap transformer fitted
- Optional back box and grille
Specifications
- Frequency range (-10 dB): 45 Hz to 18 kHz
- Frequency response (±3 dB): 60 Hz to 16 kHz
- Transformer taps: 68 W, 34 W, 17 W (and 8.5 W at 70V)
- Sensitivity: 93 dB (1 kHz to 16 kHz)
- Coverage: 120° conical, constant directivity
- Directivity factor (Q): 7.0 (average 1 kHz to 16 kHz)
- Directivity index (DI): 8.5 dB (average 1 kHz to 16 kHz)
- Maximum SPL (1 m): 118 dB on the top 70V/100V tap
- Impedance: 8 ohms
- Drivers: LF: 200 mm (8 in) Kevlar-reinforced cone, 50 mm (2 in) voice coil; HF: JBL 2412H-1 compression driver, 25 mm (1 in) voice coil
- Input connectors: Screw-locking barrier strip for bare wire
- Baffle: Metal, round, ported, drivers and transformer pre-mounted
- Compatible back box: MTC-300BB8, 25 liters (1 cu ft), sold separately
- Safety: Suitable for air handling spaces per UL1480, UL2043, NFPA 90 and NFPA 70 when installed with a UL listed backcan; S7232/UL listed signaling speaker
- Ceiling cutout: 310 mm (12.2 in) diameter for the MTC-300BB8 back box
- Dimensions: 305 mm (12.0 in) round baffle; 218 mm (8.6 in) deep from the back of the baffle
- Net weight: 5.4 kg (12.0 lb) each
- Color: White