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JBL VRX900 manual

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Table of contents for the manual

  • Page 1

    User ’ s Guide VRX932LA VRX932LA-WH VRX918S VRX918S-WH VRX915M VRX928LA VRX915S VRX-AF VRX-SMAF[...]

  • Page 2

    CONTENTS Important Safety Instructions 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water . 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Install in accordance with manufacturer ’s instructions. 8. Do not install near any hea[...]

  • Page 3

    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 multiple enclosures may be arrayed with no discontinuity in the vertical coverage pattern. As a result, the [...]

  • Page 4

    SPECIFIC A TIONS VRX932LA - 12", T wo-W ay , Line-array Loudspeaker System System T ype: 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 [...]

  • Page 5

    INTRODUCTION TO THE VRX928LA 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 lar[...]

  • Page 6

    SPECIFIC A TIONS VRX928LA - 8", T wo-way , Llne-array Speaker System T ype: 8" two way , line array loudspeaker system Frequency Range (-10 dB): 70Hz -20kHz Frequency Response (±3 dB): 87Hz - 19kHz Coverage Pattern: 100º x 15º nominal (horizontal x vertical), single unit Crossover Modes: Bi-amp / passive, externally switch-able Crossov[...]

  • Page 7

    546 mm (21.5 in) 464 mm (18.25 in) 298 mm (11.75 in) 38 mm (1.5 in) 457 mm (18.0 in) 235 mm (9.25 in) 489 mm (19.25 in) 508 mm (20.0 in) 56 mm (2.2 in) 45 mm (1.8 in) 51 mm (2.0 in) 406 mm (16.0 in) 610 mm (24.0 in) 8 mm (0.3 in) 508 mm (20.0 in) 597 mm (23.5 in) 750 mm (29.5 in) 254 mm (10.0 in) 44 mm (1.75 in) 60 mm (2.37 in) 79 mm (3.13 in) 7 IN[...]

  • Page 8

    SPECIFIC A TIONS VRX918S - 18" Subwoofer System T ype: Frequency Range (-10 dB) : Frequency Response (±3 dB) : Input Connection Modes: Recommended Crossover: Power Rating (Continuous / Program / Peak): Maximum SPL : Sensitivity (1w @ 1m): LF Driver: Nominal Impedance: Active T unings: Mounting : Suspension / Mounting: Enclosure: Finish : Gril[...]

  • Page 9

    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[...]

  • Page 10

    SPECIFIC A TIONS VRX915S - 15", Bass-reflex Subwoofer System T ype: 15” bass reflex subwoofer Frequency Range (-10 dB): 35Hz -250Hz Frequency Response (±3 dB): 40Hz - 250Hz Recommended Hi-Pass Filter: HP: Butterworth 24 dB/octave, 45 Hz LP: Linkwitz-Riley 48 dB/octave, 80 – 120Hz Power Rating 1 : (Continuous / Program / Peak) 800 W / 1600[...]

  • Page 11

    11 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 Dif ferential Drive ® woofer handles 800 watts (continuous) and delivers accurate and precis[...]

  • Page 12

    SPECIFIC A TIONS VRX915M - 15” T wo-Way Stage Monitor System T ype: 15" T wo-way Stage Monitor Frequency Range (-10 dB): 60 Hz - 20 kHz Frequency Response (±3 dB): 70 Hz - 20 kHz Coverage Pattern: 50° x 90° nominal Crossover Modes: Passive / Bi-amp Crossover Frequency: 1.1 kHz Power Rating: Passive Full-Range 800 W / 1600 W / 3200 W , 2 h[...]

  • Page 13

    13 INTRODUCTION TO THE VRX-AF The VRX-AF is an array frame designed to be used for suspension of the VRX932LA and VRX918S loudspeaker systems. The optional array frame kit includes the following items: • 1 x center frame • 2 x side arms • 4 x quick release pins • 2 x drop levers • 2 x 3/8 ˝ shackles Working Load Limit The VRX-AF , VRX932[...]

  • Page 14

    INTRODUCTION TO THE VRX-SMAF 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 x frame • 2 x quick release pins • 2 x drop levers • 2 x 3/8 " shackles Working Load Limit The working load limit depends upon the[...]

  • Page 15

    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 VR[...]

  • Page 16

    Bi-Amplified System In a bi-amplified system, array shading is accomplished by connecting separate amplifier channels to the HF section of each VRX932LA/VRX928LA. In larger arrays, a single amplifier channel may be used for two adjacent loudspeakers. Array shading is then accomplished by adjusting the gain of the HF amplifier channels. For extremel[...]

  • Page 17

    DEPLO YING THE SY STEM The VRX932LA/VRX928LA are flexible speaker systems that can be deployed in ground-supported or suspended applications. The following information will help you set up your VRX932LA/VRX928LA system safely and effectively . POLE AND TRIPOD SAFETY WARNINGS! When using stands or poles, be sure to observe the following precautions:[...]

  • Page 18

    Dual VRX932LA/VRX928LA Unlike most conventional speakers, the VRX932LA/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. This will tilt the lower of the two speakers at a 15° down-angle (providing coverage of the n[...]

  • Page 19

    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. Prior to suspending the system, an expert, trained and experienced in f[...]

  • Page 20

    Maximum Array Size There are three variations of the VRX array frame. The VRX-AF supersedes the VRX932AF-LA. The VRX-SMAF is solely intended for use with the VRX928LA and VRX915S. Before suspending a VRX array , determine which version of the array frame you have and consult the table below to determine the maximum number of speakers that may be sa[...]

  • Page 21

    Ground-Stacked, Upward Firing Arrays Applications such as covering stadium bleachers from the playing field may be addressed by installing the VRX932LA-AF/ VRX-AF/ VRX-SMAF array frame to the bottom of the array . Up to four VRX932LA/VRX928LA loudspeakers may be locked together and ground stacked using the VRX array frame kit, as shown. [W arning: [...]

  • Page 22

    Please visit www .jblpro.com/tunings for latest versions of our recommended system tunings or call customer service at T oll Free 1-800-852-5776. SY STEM PROCESSOR TUNINGS 22 NO TES[...]

  • Page 23

    JBL W ARRANTY AND CONT ACTS Mailing Address: JBL Professional 8500 Balboa Blvd. Northridge, CA 91329 USA Shipping Address: JBL Professional 8370 Balboa Blvd., Dock D Northridge, CA 91329 USA (Do not return product to this address without first obtaining prior authorization from JBL) Customer Service: Monday through Friday 8:00am - 5:00pm Pacific St[...]

  • Page 24

    JBL Professional 8500 Balboa Blvd. Northridge, CA 91329 USA Part Number: 353551-005 03/2007[...]