At NAMM: JBL Debuts VTX Line Array

JBL Professional has introduced its VTX Line Array Series, designed for portable and fixed-venue use.
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Anaheim, CA (January 19, 2012)—JBL Professional has introduced its VTX Line Array Series, designed for portable and fixed-venue use.

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The first product from the VTX Line Array Series is the VTX V25—a full-size, 3-way, high-directivity line array element. The VTX V25 features two 2000W, 15-inch Differential Drive woofers mounted in die-cast aluminum baffles, with four 8-inch Differential Drive mid-range transducers and three D2 Dual-Diaphragm Dual-Voice-Coil Compression Drivers mounted on a third-generation waveguide and RBI Radiation Boundary Integrator assembly.

At the heart of VTX is the D2 Dual Driver, a device that JBL says improves the sound and performance of high frequencies, reportedly overcoming the limitations of conventional compression driver technology.

JBL’s patented Radiation Boundary Integrator combines the high frequency and mid-range sections of the VTX V25 so the transition across each band is reporetdly seamless. A patent-pending, tuned resonant absorption chamber (TRAC) is integrated into the waveguide itself in an effort to eliminate throat-related cancellations due to back pressure from the mid-range section.

The VTX Series features Crown Audio VRack DSP and amplification. VRack is a touring rack fitted with three Crown I-Tech HD Series power amplifiers, power input panel, and custom-engineered input/output panels that is available in two configurations: VRack 12000 and VRack 4 x 3500 are loaded with three IT 12000HD and three IT 4 x 3500HD amplifiers, respectively. VRack ensures compatibility for cross rental between VTX Network Partners since VRack is supplied with all components installed and internally connected.

The workflow format of the Performance Manager interface guides the system designer through the complete system design, configuration and control process. Using Harman’s JBL HiQnet Performance Manager control software and with reference to measured spatial response, circuit level gain and JBL Line Array Control Panel tapering adjustments are performed as a first step in system tuning with the VTX V25. Once SPL and frequency response has been optimized on a circuit level, global equalization can then be applied to the entire array to compensate for room-related effects. This patented approach to system tuning has been specifically designed into the workflow of Performance Manager.

Harman
www.harman.com