Description

JBL 4675C-4LF Direct Radiator High Power Large Cinema System for Bi Amplified Applications

The JBL 4675C-4(8)LF provides powerful, smooth and accurate reproduction of motion picture soundtracks in medium and large cinemas. The system is comprised of two parts: the 4675C-HF high Frequency pack and either the 4648A-8 (8 Ohm) or 4648A-4 (4 Ohm) low Frequency system.

The 4675C-HF high Frequency pack features the JBL 2446H, 100 mm (4 in) Diaphragm Compression Driver, JBL 2360A Bi-Radial horn and JBL 2506B fully adjustable bracket. The large format Bi-Radial horn ensures uniform dispersion of the high Frequency information throughout both the vertical and horizontal coverage angles.

The JBL 4648A-4(8) offers the highest output power available in a cinema screen Loudspeaker system. The low Frequency system employs JBL s patented Vented Gap Cooling 2226H(J) 380 mm (15 in) transducers providing high power handling with extremely low power compression providing the highest acoustic power output possible. The transducers feature 100 mm (4 in) voice coils operating in a large symmetrical field geometry (SFG) magnet structure reducing second harmonic distortion.

Features:

Frequency Range: 34 Hz to 20 kHz

Sensitivity: 100 dB (LF), 113 (HF) 1 Watt, 1 meter (3.3 ft)

Power Capacity: 1200 Watt (LF): 75 Watt (HF), AES Pink Noise

Components:Dual 380 mm (15 in) low Frequency loudspeakers100 mm (4 in) compression driver90 x 40 Constant-Coverage Bi-Radial horn

4675C-ELF approved by Lucasfilm, Ltd. for THX system installations

Simple field assembly reduces labor costs

Specifications:

SYSTEM ELEMENTS:

1-JBL 4675CHF1-TBL 4648A-4(8)

SYSTEM SPECIFICATIONS:

Frequency Range (-10 dB): 35 Hz - 20 kHz

Frequency Response ( 3 dB): 40 Hz - 12 kHz

Power capacity (LF): 1200 W

Power capacity (HF): 100 W

Sensitivity (LF): 100 dB (1 W, 1 m)

Sensitivity (HF): 113 dB (1 W, 1 m)

Nominal Impedance (LF): 4(8) ohmsNominal Impedance (HF): 8 Ohms

Recommended Crossover Frequency: 500 Hz - 630 Hz

Nominal coverage: 90 horizontal, 40 vertical

Half-space reference efficiency: 6.3%

Maximum continuous acoustical power output (Sine Wave input): 42 acoustic Watts

System polarity: Positive Voltage to black terminal produces forward cone motion

Input connectors: Color-coded push terminals

4648A LOW Frequency SYSTEM:

2-2226H(J) 380 mm (15 in) low Frequency transducers1-4508A low Frequency enclosure

Net weight: 66.2 kg (146 lb)

Shipping weight: 68 kg (150 lb)

Dimensions H x W x D: 991 mm x 648 mm x 451 mm (39 in x 25 in x 17 in)

4675C-HF HIGH Frequency SYSTEM:

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