Audio Electronics

Three-Way Bi-Amplified/Passive ScreenArray® Cinema Loudspeaker System

The 3730 ScreenArray provides smooth and accurate reproduction of cinema soundtracks in a compact and very cost effective system.

FEATURES

• Three-Way ScreenArray design for maximum output, optimal coverage, and minimum distortion
• Bi-amplified or fully passive switchable operation
• SSC™ Screen Spreading Compensation
• New molded Optimized Aperture Waveguide technology for ultra low distortion and extremely uniform frequency response
• Low Frequency section features dual 15" transducers with ribbon wire voice coils for low distortion and high efficiency

The 3732 ScreenArray features true three-way system design enhanced for critical film sound reproduction in small to medium cinemas environments

Features

• Three-way ScreenArray™ design for maximum output, optimal coverage, and minimum distortion
• Triamplified (T) or Biamplified operation
• Approved for THX® certified applications(3732T)
• Ships fully assembled
• Second Generation 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

For critical sound reproduction in cinemas utilizing a solid screen. The 3733 uses the 4739 LF for increased low frequency output. The M/HF utilizes Dual Dissimilar Arraying technology to shape the coverage pattern for the optimal use. In addition the horn design improves the frequency response and lowers distortion at higher output. The 2415-XP high frequency drivers represent JBL's latest HF compression driver, designed to achieve higher output with lower harmonic distortion.

Features

• Three-way ScreenArray design for optimal performance for solid screen cinema.
• 3733 is available only in bi-amp configuration
• Design utilizes Dual Dissimilar Arraying technology to improve high frequency coverage and to shape the pattern for raked seating room design
• The 2415-XP is JBL's next generation high-frequency compression driver
• Advance waveguide design for improved frequency response and higher output with lower distortion
• Used in conjunction with CRF2 reflector horns, which are used to reflect high frequency content off a solid screen
• CRF2 includes the same HF driver as 3733 to maintain tonal quality

4642A Dual 460 mm (18 in.) Subwoofer System

The JBL Model 4642A is a high quality subwoofer system, featuring an advanced technology 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.

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.