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Инструкция по эксплуатации JBL Professional, модель LSR6332

Производитель: JBL Professional
Размер: 557.02 kb
Название файла: JBL.LSR6332.pdf
Язык инструкции:en
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. Differential Drive® technology with dynamic braking for extended low frequency response and low power compression. . Neodymium midrange with 2" voice coil and Kevlar™ cone material for extended frequency response and low distortion. . Titanium composite high frequency transducer with elliptical oblate spheroidal waveguide and damped polepiece. . High-Density baffle for low enclosure resonance and stable inertial ground. . Linear Dynamics Aperture port design eliminates port turbulence and reduces port compression. . Magnetically shielded for use near video monitors. . Reinforced enclosure and convenient mounting points allow mounted installation. . Midrange/high frequency sub-baffle may be rotated by user for horizontal or vertical orientation. . Available as mirror imaged left and right models. (order LSR6332L or LSR6332R) The LSR6332 studio monitor is designed for use as a near or mid-field reference monitor, or a soffit-mounted main monitor in applications requiring exceptional spectral accuracy and high SPL capability. The LSR6332 combines the latest in JBL’s renowned transducer and system technology with psychoacoustically derived spatial response criteria, resulting in a more accurate studio monitoring reference. In this design process, the system’s frequency response over the forward listening range (±15° vertically and ±30° horizontally) is optimized, as opposed to the conventional approach of optimizing the response directly on-axis. This design approach involves careful component design, selection of crossover frequency, and precise baffle geometry and detail. The result is a system that can be used for the most critical judgements of recording balance, image placement, and equalization. LSR6332R (Right) shown 252G Low Frequency Transducer The neodymium 12" woofer is based on JBL patented Differential Drive® technology. With the neodymium structure and dual drive coils, power compression is kept to a minimum to reduce spectral shift as power level increase. An added third coil between the drive coils acts as a dynamic brake to limit excess excursion and reduce audible distortion at the highest levels. The cone is made of a graphite polypropylene composite forming a rigid piston supported by a soft butyl rubber surround. C500G Midrange Transducer The 5" midrange transducer has a 2" neodymium magnetic structure with a woven Kevlar cone. The powerful motor structure was chosen to support the low crossover frequency to the woofer. In order to achieve the goal of accurate spatial response the crossover points are placed at 250 Hz and 2.2 kHz. These transition points match the directivity characteristics of the three transducers. 053TiS High Frequency Transducer The high frequency transducer has a composite diaphragm integrated with an Elliptical Oblate Spheroidal (EOS) waveguide with wide uniform dispersion, which is critical to the smooth spatial response required in today’s working environments. The mid and high frequency devices are mounted within millimeters of each other on a cast aluminum sub-baffle that can be rotated for horizontal or vertical placement, giving maximum flexibility in placement to reduce console and ceiling splash that interferes with stereo imaging and depth. . LSR6332 Linear Spatial Reference Studio Monitor System Dividing Network The impedance compensated crossover filters are optimized to yield 4th-order (24 dB/octave) Linkwitz-Riley electroacoustic responses from each transducer (in-phase, -6 dB at crossover). In order to achieve optimal symmetrical response in the vertical plane, both magnitude and phase compensation are implemented in the dividing network. The network allows the user to attenuate the high frequency level above 3 kHz by 1 dB. This adjusts for spectral balance when used in bright rooms. Components used in the network are exclusively low-loss metal film capacitors, low distortion electrolytic capacitors, high-Q high saturation current inductors and high current sand- cast power resistors. HF Adjustment Flat and -1 dB Settings Linear Spatial Response Measurement Techniques We all know that many loudspeakers have similar mea-ments of the direct sound field, the reflected sound field, surements but sound different. By going beyond simple and the reverberant field, the entire sound field heard by on-axis frequency response measurements, JBL defines the listener, is correlated to optimize response at the listhe ultimate performance specification for new systems – tening position. In place of spectral smoothing used by what it will sound like in your room. some manufacturers which actually conceals data, the JBL While other manufacturers use a single on-axis frequen-approach actually exposes flaws in systems, such as resocy response measurement taken at one point in space, JBL nances, poor dispersion and other causes of off-axis col- measures monitor systems over a sphere that encompasses oration. all power radiated into the listening room – in every The data sh...

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