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VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 4 INTRODUCTION TO THE VRX932LA-1 The VRX932LA-1 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 multiple 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.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 5 SPECIFICATIONS VRX932LA-1 - 12", TWO-WAY, LINE-ARRAY LOUDSPEAKER SYSTEM System Type: Frequency Range (-10 dB): Frequency Response (±3 dB): Coverage Pattern: Crossover Modes: Crossover Frequency: Power Rating (Continuous 1 / Program / Peak): 12" two-way, line array loudspeaker system 57 Hz - 20 kHz 75 Hz - 20 kHz 100º x 15º nominal (horizontal x vertical) Bi-amp / passive, externally switchable 1.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 6 INTRODUCTION TO THE VRX928LALA The VRX928LA – the smaller version of the VRX932LA is a light-weight, compact, 8", two-way line-array speaker system designed for use in arrays of up to six units. VRX928LA is the ideal choice when line-array performance is needed but the venue size doesn't call for the very long-throw characteristics of larger line-arrays. The VRX928LA offers all the same features as the VRX932LA.
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VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 8 INTRODUCTION TO THE VRX918S The VRX918S is a compact, single, 18" direct radiating subwoofer intended for use in suspended arrays or ground-supported applications. The suspension system is designed for full compatibility with the VRX932LA-1 line-array speaker system and the VRX-AF array frame. NOTE: The VRX918S-WH is designed for fixed installation situations where white loudspeakers are required to match existing decor.
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VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 10 INTRODUCTION TO THE VRX915S The VRX915S a very compact single 15" direct radiating subwoofer is intended as companion subwoofer for the VRX928LA. The suspension system is designed for full compatibility with the VRX928LA Line Array System and with the VRX-SMAF array frame. The M20 mounting plate allows for utilization of the adjustable pole mount SS4-BK.
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VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 12 INTRODUCTION TO THE VRX915M The VRX915M is a dedicated, compact and lightweight, 15", two way touring-class floor monitor, with only a 375 mm (14.75 in) stage height and JBL’s latest neodymium-magnet transducers. A 380 mm (15 in) 2265H patented Differential Drive® woofer handles 800 watts (continuous) and delivers accurate and precise low frequency reproduction.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 13 SPECIFICATIONS VRX915M - 15” TWO-WAY STAGE MONITOR System Type: Frequency Range (-10 dB): Frequency Response (±3 dB): Coverage Pattern: Crossover Modes: Crossover Frequency: Power Rating: (Continuous / Program / Peak) 15" Two-way Stage Monitor 60 Hz - 20 kHz 70 Hz - 20 kHz 50° x 90° nominal Passive / Bi-amp 1.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 14 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.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 15 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-1/VRX928LA.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 16 DEPLOYING THE SYSTEM All of the information in this section for VRX932LA-1 also applies to previous VRX932LA systems. The VRX932LA-1/VRX928LA is a flexible speaker system that can be deployed in ground-supported or suspended applications. The following information will help you set up your VRX932LA-1/VRX928LA system safely and effectively.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 17 All of the information in this section for VRX932LA-1 also applies to previous VRX932LA systems. DUAL VRX932LA-1/VRX928LA Unlike most conventional speakers, the VRX932LA-1/ VRX928LA is designed so that a pair of speakers may be safely mounted onto a pole or tripod stand. For most applications, the forward socket of the dual angle pole socket will be used.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 18 SUSPENSION SAFETY WARNINGS! All of the information in this section for VRX932LA-1 also applies to previous VRX932LA systems. 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 Maximum Load Limit before the array is suspended. Never exceed the maximum recommended load ratings.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 19 All of the information in this section for VRX932LA-1 also applies to previous VRX932LA systems. MAXIMUM ARRAY SIZE There are three variations of the VRX array frame. The VRX-AF supersedes the VRX932LA-AF. The VRX-SMAF is solely intended for use with the VRX928LA and VRX915S.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 20 All of the information in this section for VRX932LA-1 also applies to previous VRX932LA systems. SUSPENSION IN PERMANENT INSTALLATIONS For permanent installation applications a VRX array may be suspended using M10 eyebolts. Only load-rated, forged shoulder eyebolts are to be used. A kit consisting of three (3) forged shoulder eyebolts is available from JBL Professional as part number 229-00009-01.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 21 INTRODUCTION TO THE VRX-AF The VRX-AF is an array frame designed to be used for suspension of the VRX932LA-1 and VRX918S loudspeaker systems.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 22 INTRODUCTION TO THE VRX-SMAFMAF The VRX-SMAF is an array frame designed to be used for suspension of the VRX928LA and VRX915S loudspeaker systems. The optional array frame kit includes the following items: • • • • 1 2 2 2 x x x x frame quick release pins drop levers 3/8" shackles WORKING LOAD LIMIT The working load limit depends upon the configuration of array frame and speakers being suspended.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 23 JBL WARRANTY AND INFORMATION The JBL Warranty on professional loudspeaker products (except for enclosures) remains in effect for five years from the date of the first consumer purchase. JBL amplifiers are warranted for three years from the date of original purchase. Enclosures and all other JBL products are warranted for two years from the date of original purchase.
VRXpassive_UG_081808 copy.qxp Part Number: 353551-008 8/18/08 11:37 AM 08/2008 Page 24 JBL Professional 8500 Balboa Blvd.
