User`s Guide - JBL Professional
Contents
1. Input Connectors Input connection modes Dimensions H x W x D Net Weight Optional Accessories 1 IEC filtered noise with 6 dB crest factor 2 hours 2 Calculated based on power rating and sensitivity 15 bass reflex subwoofer 35Hz 250Hz 40Hz 250Hz HP Butterworth 24 dB octave 45 Hz LP Linkwitz Riley 48 dB octave 80 120Hz 800 W 1600 W 3200W 2dB at 45Hz Q 2 5 126 dB SPL 91 dB SPL 1 x JBL 2265G 1 250 mm 15 in Differential Drive woofer 4 Ohms Tunings available at www jblpro com 15 mm 18 mm multi ply birch plywood Top mounted M20 threaded socket for optional pole SS4 BK Integrated flying hardware for use with array frame VRX SMAF Optional M10 eyebolt kit Integrated steel handle with backing cup Black DuraFlex finish Powder coated black 18 gauge perforated steel with acoustical transparent black foam backing 2x Neutrik Speakon NL 4 Switchable 1 1 or 2 2 496 mm x 420 mm x 597 mm 19 5 in x 16 5 in x 23 5 in 26 kg 57 Ib SS4 BK Adjustable heavy duty pole M20 thread to 35 mm pole mount WK 4S Caster kit VRX SMAF Array Frame Eyebolt Kit Part 229 00009 01 3 White version does not include pole mount feature 4 White version uses JBL Pro White Duraflex Finish 5 White version grille is powdercoated white with acoustically transparent white cloth backing Serial No JBL PROFESSIONAL Northridge CA USA Made2. finish It is a symmetrical 30 wedge design with four non slip rubber feet per side enabling convenient left and right applications of adjacent monitors The transducers are protected by an attractive 16 gauge CNC machined steel grille which is internally lined with acoustically transparent foam to provide additional transducer protection DIMENSIONAL DRAWING FOR VRX915M Dimensions in mm inches 12 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 Maximum SPL System Sensitivity 1w 1m LF Driver HF Driver Nominal Impedance Active Tunings Enclosure Transport Finish Grille Input Connectors Dimensions H x W x D Net Weight 15 Two way Stage Monitor 60 Hz 20 kHz 70 Hz 20 kHz 50 x 90 nominal Passive Bi amp 1 1 kHz Passive Full Range 800 W 1600 W 3200 W 2 hrs Bi amp LF 800 W 1600 W 3200 W 2 hrs Bi amp HF 75 W 150 W 300 W 2 hrs 127 dB SPL continuous 133 dB SPL peak 98 dB SPL 1 x JBL 2265H 380 mm 15 in Differential Drive woofer 8 Ohms 1 x JBL 2452H 100 mm 4 0 inch diameter voice coil 38 mm 1 5 inch exit neodymium magnet compression driver 8 Ohms 8 Ohms Full Range Passive Settings available at http Awww jblpro com
3. Dimensions in mm inches R 1325 52 2 SPECIFICATIONS VRX932LA 1 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 100 x 15 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 Continuous Program Peak Bi amp LF 800 W 1600 W 3200 W Bi amp HF 75 W 150 W 300 W System Maximum SPL 130 dB SPL peak passive LF 130 dB HF 139 dB System Sensitivity 1w 1m 95 dB SPL passive mode LF 95 dB HF 114 dB LF Driver 1 x JBL 2262H 305 mm 12 in Differential Drive woofer with neodymium magnet and dual voice coils HF Driver 3 x JBL 2408J 38 mm 1 5 in voice coil neodymium magnet compression driver Nominal Impedance Passive 8 ohm Bi amp LF 8 ohms Bi amp HF 8 ohms Active Tunings Tunings available at www jblpro com Enclosure 18 mm 11 ply birch plywood Suspension Mounting Suspension requires optional VRX AF line array frame kit Dual angle 36 mm pole socket 10 mm eyebolt Finish Black DuraFlex finish Grille Powder coated black 16 gauge perforated steel with acoustically transparent foam Input Connectors Neutrik Speakon NL 4 x2 Dimensions H x W x D 349 mm x 597 mm x 376 mm 13 75 in x 23 5 i
4. 10 Use only with a cart stand bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use 2 Keep these instructions caution when moving the cart apparatus combination to avoid injury from tip over 3 Heed all warnings i Refer all servicing to qualified service personnel 4 Follow all instructions Servicing is required when an apparatus has been damaged in any way such as power cord or plug 5 Do not use this apparatus near water is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has 6 Clean only with a dry cloth been exposed to rain or moisture does not T operate normally or has been dropped 7 Do not block any ventilation openings Install in accordance with manufacturer s instructions 12 To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus that produce heat 1 ie Hearing damage prolonged exposure to excessive SPL the loudspeaker is easily capable of generating sound pressure levels 9 Only use attachments accessories specified by the manufacturer SPL sufficient to cause permanent hearing damage to performers production crew and audience members Caution should be taken to avoid prolonged exposuro SPL in excess of 90 dB PATENTS VRX series products are manufactured
5. any overhead object The following performance standards should be provided to the Professional Engineer for design purposes Uniform Building Code as applicable Municipal Building Code as applicable and Seismic Code as applicable The installation of the hardware and method of attachment must be carried out in the manner specified by the Professional Engineer Improper installation may result in damage injury or death JBL is not responsible for the application of its products for any purpose or the misuse of this information for any purpose Furthermore JBL is not responsible for the abuse of its products caused by avoiding compliance with inspection and maintenance procedures or any other abuse 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 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 safely suspended The subwoofers must always be at the top of the array VRX AF Array Frame VRX AF ARRAY FRAME The following table defines the maximum number of speakers that may be suspended using the VRX AF frame A minimum design factor of 7 1 is maintained for all speaker configurations at or below those
6. indicated in the table Maximum number of VRX918S in array 6 5 4 3 2 1 0 Maximum number of VRX932LA 1 in array 0 1 2 3 4 5 6 VRX932LA AF Array Frame VRX932LA AF ARRAY FRAME The following table defines the maximum number of speakers that may be suspended using the VRX932LA AF frame A minimum design factor of 7 1 is maintained for all speaker configurations at or below those indicated in the table Maximum number of VRX918S in array 4 3 2 1 0 Maximum number of VRX932LA 1 in array 1 2 3 4 5 VRX SMAF Array Frame VRX SMAF ARRAY FRAME The following table defines the maximum number of speakers that may be suspended using the VRX SMAF array frame A minimum design factor of 7 1 is maintained for all speaker configurations at or below those indicated in the table Maximum number of VRX915S in array 4 3 2 2 2 0 Maximum number of VRX928LA in array 0 2 3 4 5 6 The VRX subwoofers must always be on top of the array INSTALLING THE ARRAY FRAME The array frame is attached to the internal rigging of the VRX900 system using the provided Quick Release Pins WARNING Do not use any substitute for these pins 1 Begin by attaching the two side arms A to either side of the center frame Use a pair of the provided Quick Release Pins B to attach the arms to the frame Note Side arms should be attached with the rubber bumper facing up and away fro
7. 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 warranty service is required WHAT DOES THE JBL WARRANTY COVER Except as specified below your JBL Warranty covers all defects in material and workmanship The following are not covered Damage caused by accident misuse abuse product modification or neglect damage occurring during shipment damage resulting from failure to follow instructions contained in your Instruction Manual damage resulting from the performance of repairs by someone not authorized by JBL claims based upon any misrepresentations by the seller any JBL product on which the serial number has been defaced modified or removed WHO PAYS FOR WHAT JBL will pay all labor and material expenses for all repairs covered by this warranty Please be sure to save the original shipping cartons because a charge will be made if replacement cartons are requested Payment of shipping charges is discussed in the next section of this warranty HOW TO OBTAIN WARRANTY PERFORMANCE If your JBL product ever needs service write or telephone us at JBL Incorporated Attn Customer Service Department 8500 Balboa Boulevard PO Box 2200 Northridge California 91329 818 893 8411 We may direct you to an authorized JBL Service Agency or ask you to send your unit to the factory for repair Eit
8. system 70Hz 20kHz 87Hz 19kHz 100 x 15 nominal horizontal x vertical single unit Bi amp passive externally switch able 2 0 KHz 400 W 800 W 1600 W Bi amp LF 400 W 800 W 1600 W Bi amp HF 30 W 60 W 120 W two drivers 122dB SPL passive mode LF 122 dB HF 128 dB 90 dB SPL passive mode LF 90 dB HF 108 dB 1 x JBL 2168H 1 200 mm 8 in Differential Drive woofer 2 x JBL 2414H 25 mm 1 0 in neodymium compression driver Passive 8 Ohms Bi amp LF 8 Ohms Bi amp HF 16 Ohms Tunings available at www jblpro com 15 mm 25 mm multi ply birch plywood Dual 36mm pole socket included Suspension requires optional VRX SMAF line array frame kit or 10 mm eyebolt Integrated handle with backing cup Black DuraFlex finish Powder coated black 18 gauge perforated steel with acoustical transparent black foam backing 2x Neutrik Speakon NL 4 230 mm x 419 mm x 267 mm 9 in x 16 5 in x 10 5 in 12 7 kg 28 lb VRX SMAF Suspension array frame SS2 BK Tripod speaker stand Eyebolt Kit Part 229 00009 01 FUNCTIONAL BLOCK DIAGRAM NL4 INPUT gt 2 gt o INPUT 5 PASSIVE BI AMP MODE MODE NL4 t LPA NL4 1 gt INPUT 1 sS 7 J INPUT he o ao 2 INTRODUCTION TO THE VRX918S The VRX918S is a compact single 18 direct radiating subwoofer intended for use in Suspended arrays or ground supported applic
9. 748 760 FREQUENCY RESPONSE Medium Throw 0 dB WARNING Do not attempt to suspend unless you have read and fully understood all instructions Follow all applicable local ordinances Attachment of the loudspeaker to supporting structure should be referred to a qualified professional Single Mid Long Throw Throw Array Configuration Selector HF Output Level Equipped with Differential Drive Transducer Technology U S PATENT 5 748 760 Long Throw 3 dB WARNING Do not attempt to suspend unless you have read and fully understood all instructions Follow all applicable local ordinances Attachment of the loudspeaker to supporting structure should be referred to a qualified professional Single sneak n Mid Long Short Throw Throw Throw l E Array Configuration Selector HF Output Level Equipped with Differential Drive Transducer Technology U S PATENT 5 748 760 The frequency response graph represents measurements from a single typical VRX900LA speaker applying the three different ACS settings 3dB OdB 3qB 110 HF 3dB 100 HF 0dB a I HF 3dB om 2 90 Cc 2 lt 80 7 vo 1000 10000 20000 Frequency Hz 14 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 sp
10. 8 shackles WORKING LOAD LIMIT The working load limit depends upon the configuration of array frame and speakers being suspended Please refer to the DEPLOYING THE SYSTEM section of this user guide for maximum allowable load limits when using the VRX SMAF frame The VRX SMAF array frame has been specifically designed to work only with the VRX928LA and VRX915S speakers Use of the array frames in any manner other than as described in this manual could result in damage to the frame and pose a risk of injury or death DIMENSIONAL DRAWINGS FOR VRX SMAF 457 18 0 2 0 Z 203 I a 25 8 0 51 1 0 oy oo i 51 0 75 eo 51 a 43 J g F i z Li 424 lt 10 T 16 7 0 389 Dimensions in mm inches 22 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 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 products
11. 915S or SRX718S subwoofers Do not mount VRX932LA 1 cabinets on top of the compact VRX915S subwoofer SINGLE VRX932LA 1 VRX928LA A single VRX932LA 1 may be used on a tripod stand JBL SS2 BK or on a pole JBL SS4 BkK over its companion subwoofer the VRX918S or the SRX718S The use of a subwoofer is recommended for applications requiring more low frequency power and extension Usually the Array Configuration Selector ACS switches on the input panel should be set to the Short Throw 3 dB position when a single speaker is used A single VRX928LA may be used on a tripod stand JBL SS2 Bk or on a pole JBL SS4 Bk over its compact companion subwoofer the VRX915S or the L larger VRX918S SRX718S subwoofer models The VRX932LA 1 VRX928LA includes a dual angle 36 mm pole mount socket By selecting the appropriate pole socket and adjusting the height of the tripod or pole optimum coverage may be achieved Ideally the audience should not be able to see either he bottom or the top surfaces of the speaker This will insure that all listeners are within the included coverage angle of the loud speaker The rear pole socket will position the speaker with the baffle 2 5 to the floor while the forward socket will position the speaker with the baffle angled down by 15 System illustration shows the available JBL SS2 BK tripod stand NOTE VRX932LA 1WH VRX928LA WH does not include pole mount features and is designed specifica
12. V RX 9 3 2CL4LCA 1 V RX 9 3 2 LA 1 W H V RX 9 1 8 8 User s Guide VRX928LA WH PROFESSIONAL CONTENTS Introduction to the VRX932LA 1 4 VRX932LA 1 Specifications 5 Introduction to the VRX928LA 6 VRX928LA Specifications 7 Introduction to the VRX918S 8 VRX918S Specifications 9 Introduction to the VRX915S 10 VRX915S Specifications 11 Introduction to the VRX915M 12 VRX915M Specifications 13 Amplitude Shading 14 15 System Processor Tunings 15 Deploying the System 16 17 Suspension Safety Warnings 18 20 Introduction to the VRX AF 21 Introduction to the VRX SMAF 22 JBL Warranty and Information 23 IMPORTANT SAFETY INSTRUCTIONS The VRX Series loudspeakers covered by this manual are not intended for fixed installation in outdoor or high moisture environments Moisture can damage the speaker cone and surround and cause corrosion of electrical contacts and metal parts Avoid exposing the speakers to direct moisture Keep speakers out of extended or intense direct sunlight The driver suspension will prematurely dry out and finished surfaces may be degraded by long term exposure to intense ultra violet UV light The VRX Series speakers can generate considerable energy When placed on a slippery surface such as polished wood or linoleum the speaker may move due to its acoustical energy output Precautions should be taken to assure that the speaker does not fall off a stage or table on which it is placed 1 Read these instructions
13. and sold under U S patents 5 748 760 6 112 847 6 394 223 6 847 726 6 774 510 D483 743 6 768 806 and D483 744 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 Array coverage may be adjusted by means of the Array Configuration Selector ACS a feature that provides amplitude shading see page 14 amp 15 when the system is used in passive mode Integral rigging hardware a dual angle pole socket and an accessory array frame provide for a variety of mounting and suspension options VRX932LA and VRX932LA 1 are completely interchangeable and can be used together When operated in passive mode frequency response characteristics are exactly the same and both can be used in the same array NOTE The VRX932LA 1WH is designed for fixed install situations where white loudspeakers are required to match existing decor White versions therefore do not have handles feet or pole mount features DIMENSIONAL DRAWINGS FOR VRX932LA 1 349 13 75
14. anically secured to each other using the integral rigging frame and supplied quick release pins See the diagram below for details Safe combinations are VRX918S with VRX932LA VRX932LA 1 VRX932LA WH VRX932LA 1WH VRX915S with VRX928LA VRX928LA WH WARNING Only the correct quick release pins supplied by JBL are to be used 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 Prior to suspending the system an expert trained and experienced in flying speaker systems should be consulted Research and understand the codes practices and requirements in the venues where you intend to operate your sound system INSPECTION amp MAINTENANCE Before suspending or pole mounting any speaker system always inspect all components enclosure rigging frames pins eyebolts track fittings etc for cracks deformations corrosion missing loose or damaged parts that could reduce strength and safety of the array Do not suspend or pole mount the speaker until the proper corrective action has been taken Installed systems should be inspected at least annually The inspection shall inc
15. ations 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 White versions therefore do not have handles feet or pole mount features DIMENSIONAL DRAWINGS FOR VRX918S 8 A D a ES 56 489 2 2 gt k 19 25 gt Dimensions in mm inches SPECIFICATION S VRX918S 18 BASS REFLEX SUBWOOFER System Type 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 Tunings Mounting Suspension Mounting Enclosure Finish 4 Grille 5 Input Connectors Dimensions H x W x D Net Weight Optional Accessories 1 IEC filtered noise with 6 dB crest factor 2 hours 18 bass reflex subwoofer 31 Hz 220 Hz 34 Hz 220 Hz Switchable 1 1 or 2 2 High pass Butterworth 18 dB oct 31 Hz Low pass Linkwitz Riley 48 dB oct 80 Hz 800 W 1600 W 3200 W 130 dB SPL peak 95 dB SPL 1 x JBL 2268H 457 mm 18 in Differential Drive woofer 8 ohms Use SRX718S tunings Optional VRX AF line array frame kit or 10mm eyebolt Part 229 00009 01 Top mo
16. eaker at 0 dB and the bottom speaker 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 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 extremely precise control over system performance it may also be desirable to dedicate an individual system controller output to each HF amplifier channel SYSTEM PROCESSOR TUNINGS Please note that when operated in bi amp mode the VRX932LA 1 requires a unique DSP preset that is different from the preset required for bi amplified operation of the VRX932LA When operated in bi amp mode VRX932LA and VRX932LA 1 performance is fully compatible provided that the correct preset is used for processing the respective models Please visit www jblpro com tunings for latest versions of our recommended system tunings or call customer service at Toll Free 1 800 852 5776 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 POLE AND TRIPOD SAFETY WARNINGS When us
17. er frame e 2x side arms e 4 x quick release pins e 2 x drop levers 2 x 3 8 shackles WORKING LOAD LIMIT The VRX AF VRX932LA AF and VRX SMAF array frames have been precisely engineered to work together with the VRX line of speakers as a system The working load limit depends upon the configuration of array frame and speakers being suspended Please refer to the DEPLOYING THE SYSTEM section of this user guide for maximum allowable load limits when using the VRX AF VRX SMAF or VRX932LA AF frame Use of the array frames in any manner other than as described in this manual could result in damage to the frame and pose a risk of injury or death DIMENSIONAL DRAWINGS FOR VRX AF 635 j 445 25 0 f D 17 5 51 oan an 2 0 t t Le L h u 13 eo 7 oe 25 65 65 65 65 330 25 d5 1 0 2 5 2 5 2 5 2 5 13 0 1 0 j y ry O C 292 11 5 a e 117 10 4 6 0 4 o 4 Y i 7 i 610 l 24 0 ep Dimensions in mm inches O e y 21 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 e 1x frame 2 x quick release pins 2 x drop levers 2 x 3
18. her way you ll need to present the original bill of sale to establish the date of purchase Please do not ship your JBL product to the factory without prior authorization If transportation of your JBL product presents any unusual difficulties please advise us and we may make special arrangements with you Otherwise you are responsible for transporting your product for repair or arranging for its transportation and for payment of any initial shipping charges However we will pay the return shipping charges if repairs are covered by the warranty MAILING ADDRESS OUTSIDE THE USA JBL Professional 8500 Balboa Blvd Contact the JBL Professional Distributor in your area A Northridge CA 91329 USA complete list of JBL Professional international distributors is provided at our U S A website www jblpro com SHIPPING ADDRESS JBL Professional PRODUCT REGISTRATION 8370 Balboa Blvd Dock D Northridge CA 91329 USA Register your product online at www jblpro com registration Do not return product to this address without first obtaining prior authorization from JBL CUSTOMER SERVICE ON THE WORLD WIDE WEB Monday through Friday 8 00am 5 00pm Pacific Standard Time In the U S A 800 8JBLPRO 800 852 5776 www jblproservice com www jblpro com 23 JBL JBL Professional PROFESSIONAL 8500 Balboa Blvd Part Number 853551 008 08 2008 Northridge CA 91329 USA H A Harman International Company
19. in USA VRX915S CE ALLERT 1 Low FREQ ac 40Ohms IN THRU NL4 inf IN THRU Z 2 3 6 2 WARNING Do not attempt to suspend unless you ad and fully understood all instructions 1 Follow all applicable local ordinances Attachment of eaker to supporting structure should be referred to a qualified professional 1 NL4 NL4 1 IN THRU 2 l 2 NL4 2 a UBL VRXQ00 Equipped with Technology US 8 INTERNAL CONNECTORS r 2 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 The 2452H 102 mm 4 in voice coil compression driver is coupled to a 50 x 90 aluminum horn to provide smooth and clear high frequency reproduction critical for high performance monitoring Bi amp or full range passive operation may be selected via a recessed high current switch mounted alongside the NL4 input connector in one of the handle cups An additional NL4 connector is mounted in the other handle cup for a convenient loop thru connection minimizing cable runs on stage The enclosure is constructed of top quality Baltic birch plywood and is coated in JBL s rugged DuraFlex
20. ing stands or poles be sure to observe the following precautions e 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 manufacturer Be certain that the surface on which the system is to be stacked is flat stable and solid e Route cables so that performers production crew and audience will not trip and topple the speakers Inspect the stand or pole and associated hardware before each use and do not use equipment with worn damaged or missing parts Do not attempt to place more than two VRX932LA 1 VRX928LA loudspeakers on a stand or pole When mounting two VRX932LA 1 VRX928LA speakers on a pole or tripod integral rigging hardware must be used to secure the speakers to each other e Always be cautious when deploying the system outdoors Unexpected winds may topple a system It may be necessary to place additional weight i e sandbags on the base of the stand to improve stability Avoid attaching banners or similar items to any part of a speaker system Such attachments could act as a sail and topple the system e Unless you are confident that you can handle the weight of the speaker ask another person to help you get it onto the tripod stand or pole One or two VRX932LA 1 VRX928LA cabinets may be mounted onto either a JBL SS2 BK tripod stand or with the SS4 BK adjustable pole mount to their companion VRX918S VRX
21. ixed install situations where white loudspeakers are required to match existing decor White versions therefore do not have handles feet or pole mount features DIMENSIONAL DRAWINGS FOR VRX928LA 419 16 5 E O O 209 8 3 J Peri ao e jz Dimensions in mm inches SPECIFICATIONS VRX928LA 8 TWO WAY LINE ARRAY SPEAKER System Type Frequency Range 10 dB Frequency Response 3 dB Coverage Pattern Crossover Modes Crossover Frequency Power Rating Continuous Program Peak System Maximum SPL System Sensitivity 1 W 1m LF Driver HF Driver Nominal Impedance Active Tunings Enclosure Suspension Mounting Transport Finish Grille Input Connectors Dimensions H x W x D Net Weight Optional Accessories 1 IEC filtered noise with 6 dB crest factor 2 hours 2 Calculated based on power rating and sensitivity 3 White version does not include pole mount feature 4 White version uses JBL Pro White Duraflex Finish 5 White version grille is powdercoated white with acoustically transparent white cloth backing LONG THROW e 3 dB 0dB MID THROW NL4 1 E SHORT THROW 2 2 8 two way line array loudspeaker
22. lly for fixed installations 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 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 or the top surfaces of the two speaker array Usually the Array Configuration Selector ACS switches on the lower speaker s input panel q should be set to the Short Throw 3 dB position while the upper speaker will be set to either Short Throw 3 dB or Mid Throw 0 dB Place the speakers on the pole or tripod one at a time Be sure to lock the two speakers together using the integral rigging hardware see below System illustration shows available JBL SS4 BK speaker pole and SRX718S subwoofers Do not stack more than two VRX932LA 1 VRX928LA speakers on a pole LOCKING 2 VRX932LA 1 VRX932LA 1WH VRX928LA VRX928LA WH LOUDSPEAKERS TOGETHER Any time two or more VRX932LA 1 VRX928LAs are arrayed together they must be mech
23. lude a visual survey of all corners and load bearing surfaces for signs of cracking water damage de lamination or any other condition that may decrease the strength of the loudspeaker enclosure Accessory rigging hardware provided with or for the JBL VRX932LA 1 VRX932LA WH VRX928LA or VRX918S VRX915S loudspeaker must be inspected for fatigue at least annually or as required by local ordinance For all other hardware and fittings refer to the hardware manufacturer s inspection and maintenance guidelines for process ARE YOU NEW TO RIGGING If you are new to rigging you should do the following Read and study JBL Technical Note Volume 1 Number 14 Basic Principles for Suspending Loudspeaker Systems available at http Avww jblpro com pub technote tn_v1n14 pdf Know the rules for safe rigging Attend a safe rigging seminar such as that presented by professionals like Rigging Seminars www riggingseminars com or by Chain Motor Hoist manufacturers like Columbus McKinnon Corp manufacturers of the C M Lodestar Meet and establish a relationship with a licensed mechanical or structural engineer Get in the habit of asking them questions instead of guessing about their answers Learn from what they tell you e Meet and discuss this aspect of your business with your Insurance Agent ATTACHMENT TO STRUCTURES A licensed Professional Engineer must approve the placement and method of attachment to the structure prior to the installation of
24. m the center B A frame The center frame is installed with the rubber gasket toward the enclosure and the label right side up NOTE The arms of the VRX932LA AF and VRX AF are deliberately designed so as not to be interchangeable The arms of the VRX SMAF are already attached 2 Place the entire array frame on top of the VRX900 system and flip up the drop levers C found on both sides of the speaker to be received by the array frame arms 3 Once the drop levers on the speaker are received by the array frame use a pair of the provided Quick Release Pins D to attach the drop levers to the array frame B does not apply to VRX SMAF 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 Suspension of the VRX array must employ both top attachment points The VRX918S and VRX915S subwoofers must always be at the top of the array EYEBOLT SUSPENSION The following table defines the maximum number of speakers that may be suspended using the two M10 eyebolt attachment points provided on the cabinets A minimum design factor of 7 1 is maintained for all speaker configurations at or below
25. n x 14 8 in Net Weight 21 kg 46 Ib Optional Accessories VRX AF Suspension array frame SS2 BK Tripod speaker stand SS4 BK Adjustable Satellite Speaker Pole to be used with VRX918S and SRX718S only M10 Eyebolt Kit Part 229 00009 01 1 IEC filtered noise with 6 dB crest factor 2 hours 2 Calculated based on power rating and sensitivity 3 White version does not include pole mount feature 4 White version uses JBL Pro White Duraflex Finish 5 White version grille is powdercoated white with acoustically transparent white cloth backing FUNCTIONAL BLOCK DIAGRAM LONG THROW 0dB MID THROW 1 NL4 1 NLA 3 dB INPUT p INPUT SHORT THROW 2 BI AMP MODE PASSIVE MODE NL4 4 N4 4 INPUT INPUT 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 larger line arrays The VRX928LA offers all the same features as the VRX932LA As with the VRX932LA the Array Configuration Selector ACS makes it possible to distribute the sound more evenly over the entire audience area by reducing the output near the stage and increasing it for the far to reach rear areas See page 14 amp 15 NOTE The VRX928LA WH is designed for f
26. 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 VRX932LA 1 VRX928LAs the lower speaker which covers the nearest listeners may have its high frequency output reduced At the same time the upper speaker may have its high frequency output increased The overall sound power in the room is unchanged but the distribution of acoustic energy to the audience is far more uniform Amplitude shading of a VRX932LA 1 VRX928LA array may be accomplished in passive or bi amplified systems ARRAY CONFIGURATION SELECTOR ACS In passive mode the Array Configuration Selector may be used The 3 dB position will typically be used for the speaker s in an array that are covering the nearest listening area The 3 dB position will be used for the speaker s covering the more distant areas or to compensate for the low frequency build up resulting from mutual coupling of multiple woofers in an array Short Throw 3 dB WARNING Do not attempt to suspend unless you have read and fully understood all instructions Follow all applicable local ordinances Attachment of the loudspeaker to supporting structure should be referred to a qualified professional SG soe WD Mid Long Short Throw Throw Throw es ee Array Configuration Selector HF Output Level BI AMP PASSIVE Equipped with Differential Drive Transducer Technology U S PATENT 5
27. s 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 WARNING The VRX928LA is the only system intended for use with the VRX915S when utilizing the SS4 BK NOTE The VRX915S WH is designed for fixed install situations where white loudspeakers are required to match existing decor White versions therefore do not have handles feet or pole mount features DIMENSIONAL DRAWINGS FOR VRX915S 314 12 4 41 16 j Q D 318 12 5 478 18 8 597 23 5 O g O A e 6 r j tO of Dimensions in mm inches S SO 478 18 8 328 24 12 9 o iC o o 248 o o e o 43 9 8 1 7 500 13 496 19 7 19 5 43 o o o o 1 7 ce o o o o 10 SPECIFICATIONS VRX915S 15 BASS REFLEX SUBWOOFER System Type Frequency Range 10 dB Frequency Response 3 dB Recommended Hi Pass Filter Power Rating Continuous Program Peak Recommended EQ Maximum SPL Sensitivity 1 W 1m LF Driver Nominal Impedance Active Tunings Enclosure Suspension Mounting Transport Finish Grille
28. those indicated in the table Maximum number of VRX918S in array 5 4 3 2 Maximum number of VRX932LA 1 in array 0 2 4 5 6 Maximum number of VRX915S in array 4 3 2 2 Maximum number of VRX928LA in array 0 2 EYEBOLT SUSPENSION ARRAY FRAME SUSPENSION Not to exceed 60 H 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 1 VRX928LA loudspeakers may be locked together and ground stacked using the VRX array frame kit as shown WARNING Do not ground stack more than four VRX932LA 1 VRX928LA loudspeakers in one array When ground stacking VRX900LA loudspeakers use the VRX932LA AF VRX AF VRX SMAF array frame as the base as shown by attaching the loose drop levers included in the array frame kit to the lower rigging bar on the VRX900LA loudspeaker When stacking the loudspeakers together make sure each loudspeaker is locked together Be certain that the surface on which the system is to be stacked is flat stable and solid 20 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 The optional array frame kit includes the following items e 1x cent
29. tunings index htm Symmetrical stage monitor 15 18 mm Birch plywood 2x Integrated handle input cup Black DuraFlex finish Powder coated black 16 gauge perforated steel with acoustically transparent black screen backing Neutrik Speakon NL 4 x2 one on each end 629 mm x 432 mm x 324 mm 375 mm stage height 24 75 in x 17 in x 12 75 in 14 75 stage height 21 kg 46 0 Ib 1 IEC standard full bandwidth pink noise with 6 dB crest factor for specified period 2 Calculated based on power rating and sensitivity JBL continually engages in research related to product improvement Some materials production methods and design refinements are introduced into existing products without notice as a routine expression of that philosophy For this reason any current JBL product may differ in some respect from its published description but will always equal or exceed the original design specifications unless otherwise stated FUNCTIONAL BLOCK DIAGRAM YBL VRX900 PASSIVE JBL PROFESSIONAL Northridge CA USA Made in USA NL4 IN THRU PASSIVE MODE NL4 IN THRU BI AMP PASSIVE 1 LF 8W 1 IN 8W 2 HF 8W 2 N C 1 HIGH NL4 1 FREQ IN THRU 2 BI AMP LOW MODE FREQ NL4 1 IN THRU 2 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
30. unted M20 threaded socket for optional SS4 BK pole Rectangular 18 mm 13 ply birch plywood Black DuraFlex finish Powder coated 16 gauge perforated steel with acoustical transparent charcoal foam backing Neutrik Speakon NL 4 x2 508 mm x 597 mm x 749 mm 20 0 in x 23 5 in x 29 5 in 37 kg 81 Ib SRX718S CVR Pull over padded cover SS4 BK Adjustable heavy duty pole M20 thread to 35 mm pole mount WK 4S Caster kit VRX AF Array Frame Eyebolt Kit Part 229 00009 01 2 Calculated based on power rating and sensitivity 3 White version does not include pole mount feature 4 White version uses JBL Pro White Duraflex Finish 5 White version grille is powdercoated white with acoustically transparent white cloth backing WARNING Do not attempt to suspend unless you have read and Follow all applicable local cemas tachment the loudspeaker to support referred to a qualified professional NL4 1 NL4 2 VRX900 fully understood all instructions ting structure should be FUNCTIONAL BLOCK DIAGRAM LOW FREQ sli k als NL4 e alg IN THRU Elz 2 gt x15 e of 4 g i a ic lS i NL4 ez IN THRU Bla 2 ray tc i g i 5 2 z z INTERNAL CONNECTORS 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 i
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