Consumer Electronics

The CDi Series amplifiers are professional tools designed and built for installed sound applications. The series includes four models which are identical except for output power: CDi 1000, CDi 2000, CDi 4000, and CDi 6000. All are rugged and lightweight, and offer unmatched value in their class.

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Description:

The JBL 4642A is a high quality subwoofer system, featuring a technologically advanced 460 mm (18 in) low frequency transducers mounted in a direct radiator, bass-reflex enclosure for smooth response to the lowest audible frequencies. The 4642A is ideal for low frequency augmentation of either analog or digital soundtracks in motion picture theaters and for general sound reinforcement applications. The 2241H transducer utilizes the patented Vented Gap Cooling (VGC) process, which pumps air through the magnetic gap and directly over and around the voice coil, providing immediate heat transfer and a reduction in operating temperature. This increases power handling while reducing power compression. Through the use of computer-aided magnet optimization and analysis techniques, JBL engineers were able to optimize magnet weight, flux density and field saturation, resulting in a 2.6 kg (6.5 lb) reduction in overall driver weight and a significant reduction in harmonic distortion. This magnet structure offers much of the weight advantage of rare earth magnet structures without the prohibitive cost, enabling the system to carry a 600-watt continuous AES pink noise power rating.

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4645C Single 460 mm (18 in.) Subwoofer System

The JBL Model 4645C is a high quality subwoofer system, featuring an advanced technology 460 mm (18 in), low frequency transducer mounted in a direct radiator, bass-reflex enclosure for smooth response to the lowest audible frequencies. The 4645C is ideal for low-frequency augmentation of either analog or digital soundtracks in motion picture theaters and for general sound reinforcement applications.

Features

• 800 Watts Continuous Pink Noise, 1600 Watts Continuous Program Power Handling
• Usable response to 22 Hz (-10 dB, no EQ), flat to 22 Hz (-3 dB) with External EQ
• 2242H SVGTM Super Vented Gap Cooled Driver - High Sensitivity - Minimal Power Compression - Highest Maximum-SPL Capability - Extremely Low 2nd and 3rd - Harmonic Distortion - Symmetrical Field Geometry SFGTM - Magnet Structure - Extended Excursion Capability
• Approved by Lucasfilm, Ltd. for THX® installations

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JBL quality and ScreenArray® performance in a two-way system. The new "next generation" Two-Way ScreenArray® speaker systems are now available. The Two-Way ScreenArray® Systems provide smooth and accurate reproduction of cinema soundtracks while being compact and very cost-effective. Measuring less than 18" deep, each system features screen spreading compenstation and the latest advanced JBL technology. All models offer the low-distortion ScreenArray® horn for clear, accurate reproduction of the mid and high frequencies.

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Key Features:

• Three-way ScreenArray® design for maximum output, optimal coverage and minimum distortion
• Available for bi-amplified operation (model 4732) or tri-amplified operation (model 4732-T)
• Large format 3" neodymium, titanium diaphragm, high frequency compression driver
• Patented Differential Drive® 15" low frequency woofers for improved power handling and reduced distortion.
• Molded Optimized Aperture Waveguide technology for ultra-low distortion and extremely uniform frequency response
• SSC™ Screen Spreading Compensation
• Focused coverage technology
• Flat front waveguide design for easy baffle wall installation
• Shallow profile for minimum behind-screen depth requirements

Today's premier cinemas require perfect coverage in every seat of the auditorium, wide dynamic range and extended bandwidth, as well as inaudible levels of distortion. Digital soundtracks, especially those associated with the latest digital cinema requirements, require sound systems that can accurately reproduce the sound exactly as recorded. Designed for high power critical sound reproduction in premier cinemas, studio production and post production applications, the 4732 next-generation ScreenArray features true three-way design enhanced by advanced engineering. JBL's latest technical innovations are integrated into a system design that provides superior coverage, maximum power handling and uniform acoustic power output, along with extremely low distortion. The ScreenArray design provides ideal power response and directivity control with seamless transitions between acoustic sections.

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