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VRX932LA
User’s Guide
Part Number: 353551-001
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CONTENTS Introduction to the VRX932LA 3 Product Specifications 4 Amplitude Shading 5-6 System Processor Tunings 7 Deploying the System 8-11 JBL Professional Warranty and Contact Information 12 Important Safety Instructions 1. Read these instructions. The VRX932LA loudspeaker covered by this manual is not intended for fixed installation in outdoor or high 2. Keep these instructions. moisture environments. Moisture can damage the 3. Heed all warnings. speaker cone and surround and cause corrosion
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INTRODUCTION TO THE VRX932LA The VRX932LA is a two-way, line-array loudspeaker system intended for use in arrays of up to six enclosures. Three high-frequency drivers are mounted to the Constant Curvature waveguide which is designed so that multi- ple enclosures may be arrayed with no discontinuity in the vertical coverage pattern. As a result, the array will behave in much the same way as would a single loudspeaker. Array coverage may be adjusted by means of the Array Configuration Selector (AC
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SPECIFICATIONS VRX932LA - 12¨, two-way, line-array loudspeaker system System Type: 12" two-way, line array loudspeaker system Frequency Range (-10 dB): 57 Hz - 20 kHz Frequency Response (±3 dB): 75 Hz - 20 kHz Coverage Pattern: 100º x 15º nominal (horizontal x vertical) Crossover Modes: Bi-amp / passive, externally switchable Crossover Frequency: 1.2 kHz Power Rating Passive: 800 W / 1600 W / 3200 W (Continuous¹/ Program/ Peak): Bi-amp LF: 800 W / 1600 W / 3200 W Bi-amp HF: 75 W / 150 W / 300
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AMPLITUDE SHADING Amplitude Shading Amplitude shading is a technique that allows the coverage pattern of a loudspeaker array to be shaped by adjusting the relative acoustic output of some of the devices in the array. Most often, array shading involves only the mid and high-frequency sections of the array. In a simple system consisting of three VRX932LAs, the lower speaker (which covers the nearest listeners) may have its high-frequency output reduced. At the same time, the upper speaker may have
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Array Configuration Selector (ACS) Below is an example of applying the ACS in a three-speaker array. In this particular configuration, the ACS on the top speaker is set at +3 dB, the middle speaker at 0 dB, and the bottom speaker -3 dB. +3 dB 0 dB -3 dB Audience Bi-Amplified System In a bi-amplified system, array shading is accomplished by connecting separate amplifier channels to the HF section of each VRX932LA. In larger arrays, a single amplifier channel may be used for two adjacent loudspeak
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SYSTEM PROCESSOR TUNINGS The following table represents the JBL-approved tuning for the BSS366. If you have a processor for which VRX932LA settings have not been created, the table may be used as a starting point to set your processor. Keep in mind that various processors respond to settings in different ways, so some additional fine-tuning may be required. For updated tunings, or if you own a dbx DriveRack™ or BSS processor that does not include VRX932LA tunings, these may be downloaded from ht
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DEPLOYING THE SYSTEM The VRX932LA is a flexible speaker system that can be deployed in ground-supported or suspended applica- tions. The following information will help you set up your VRX932LA system safely and effectively. POLE AND TRIPOD SAFETY WARNINGS! When using stands or poles, be sure to observe the following precautions: • Check the stand or pole specification to be certain the device is designed to support the weight of the speaker. Observe all safety precautions specified by the manu
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Dual VRX932LA Unlike most conventional speakers, the VRX932LA is designed so that a pair of speak- ers may be safely mounted onto a pole or tripod stand. For most applications, the for- ward socket of the dual angle pole socket will be used. This will tilt the lower of the two speakers at a 15° down-angle (providing coverage of the near listeners) while the upper speaker will face straight out (covering the more distant areas). Ideally, the listeners should not be able to see either the bottom o
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SUSPENSION SAFETY WARNINGS! Correct use of all rigging hardware is required for secure system suspension. Careful calculations should always be performed to ensure that all components are used within their working load limits before the array is suspend- ed. Never exceed the maximum recommended load ratings. Prior to suspending the system, an expert, trained and experienced in flying speaker systems should be consulted. Inspection & Maintenance Before suspending or pole mounting any speaker syst
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Installing the Array Frame Suspension of the VRX932LA requires the VRX932LA-AF Array Frame [Warning: Do not use any substitute for VRX932LA-AF Array Frame]. This device is attached to the VRX932LA's integral rigging using the provided Quick Release Pins [Warning: Do not use any substitute for these pins]. Up to six (6) VRX932LA speakers may be suspended from a single array frame. 1. Begin by attaching the two side arms (A) to either side of the center frame. Use a pair of the provided Quick Rele
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JBL WARRANTY AND CONTACTS Who Is Protected by This Warranty? Your JBL Warranty protects the original owner and all subsequent owners so long as: A.) Your JBL product has been purchased in the Continental United States, Hawaii or Alaska. (This Warranty does not apply to JBL prod- ucts purchased elsewhere except for purchases by military outlets. Other purchasers should contact the local JBL distributor for warranty information.); and B.) The original dated bill of sale is presented whenever warr
