JBL VTX Series Rigging Manual
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JBL VTX Series Rigging Manual

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VTX B28 | Rigging Manual

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  • Page 1 VTX B28 | Rigging Manual...
  • Page 2 VTX B28 | Rigging Manual GENERAL INFORMATION VTX B28 - Rigging Manual Document Number: 1000346380 Version: A - EN Distribution Date: July 13, 2020 Copyright © 2020 by HARMAN International; all rights reserved JBL PROFESSIONAL 8500 Balboa Blvd Northridge, CA 91329...

  • Page 3: Line Array Calculator

    Thank you for purchasing JBL VTX Series products In more than 75 years of JBL innovations, the VTX Series stands apart as a milestone in the practical application of cre- ative engineering. VTX products herald the next generation in line array loudspeaker systems: a new era in performance, system integration and user friendliness.

  • Page 4: Table Of Contents

    VTX B28 | Rigging Manual T ABLE OF CONTENTS 1 - SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1 Safety Instructions .
  • Page 5 VTX B28 | Rigging Manual 9.2 Suspending B28 Arrays ................31 9.3 Disassembling Arrays .

  • Page 6: Safety

    11. Contact JBL Professional for advanced servicing issues. 12. CAUTION - DO NOT PERFORM ANY SERVICING UNLESS YOU ARE QUALIFIED TO DO SO.

  • Page 7: Important Safety Warning

    None of the information in this section should be used without first obtaining competent advice with respect to applicability to a given circumstance. None of the information presented herein is intended as a representation or warranty on the part of JBL. Anyone making use of this information assumes all liability arising from such use.

  • Page 8: Symbols

    VTX B28 | Rigging Manual 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.

  • Page 9: Mechanical Limits

    DGUV regulation 17 (BGV-C1) for a minimum safety factor of 4:1. Minimum safety factor requirements for suspended arrays are often set by local regulations. Use the JBL Line Array Calculator software to check mechanical limits and ensure compliance with local regulations.

  • Page 10: System Components

    VTX B28 GND | Ground Stack VTX A12 VT GND | Ground Stack CAUTION: Always use components and accessories specified and approved by JBL Professional . When a cart is used, use caution when moving the cart to avoid injury from tip-over .

  • Page 11: Software

    4.1 LINE ARRA Y CALCULA TOR 3 Line Array Calculator 3 acoustical prediction software is used for the design and mechanical validation of VTX series line array systems. Using LAC-3 is a three-step process. First, venue dimensions are defined using either X/Y/Z coordinates or the fast distance/angle method.

  • Page 12: Array Link

    4.2 ARRA Y LINK JBL Array Link is a mobile companion app that works with LAC-3 software to assist technicians deploying VTX Series systems in the field. Array Link uses a QR code to directly transfer mechanical data in real time from an array design created in LAC-3 to a mobile phone running iOS®...

  • Page 13: Ground-Stacked Arrays In Lac-3

    This message is presented when the specified array design exceeds the mechanical limits set by the JBL team for the speakers or selected accessories. Array designs that trigger this message should not be used under any conditions, as they can lead to hardware damage and/or injury.

  • Page 14: Rigging System

    VTX B28 | Rigging Manual 5 - RIGGING SYSTEM The B28 uses a simple two-point rigging system capable of suspending arrays of up to 16 B28 enclosures. Rigging components are hidden behind the wooden side panels, and the link bars are deployed by a spring-loaded mechanism. A unique, all-captive locking system secures cabinets together using a set of levers and sliding pins.

  • Page 15: The Rigging Mechanism

    VTX B28 | Rigging Manual 5.2 THE RIGGING MECHANISM The B28 rigging system consists of two main mechanisms, one at the top (A) and one at the bottom of the enclosure (B). The mechanism at the top extends the link bar for connection to another cabinet. The lower mechanism locks B28 subwoofers together. •...
  • Page 16 VTX B28 | Rigging Manual When cabinets are stacked together, the top of the link bar is not accessible. In this situation, the bar is lowered using a finger notch on the side of the cabinet. • The lower mechanism secures B28 cabinets together. The mechanism is controlled by the RED lever, which moves a pin through the link bar of the cabinet below.

  • Page 17: Connecting Cabinets Together

    VTX B28 | Rigging Manual 5.3 CONNECTING CABINETS TOGETHER STEPS: • Stack the cabinets. • Open the LOCK of the top B28. • Extend the link bar. • Close the lock. CAUTION: Always ensure that locks are fully seated and that both sides of the B28 rigging are deployed and en- gaged before lifting .

  • Page 18: Locked And Unlocked Example

    VTX B28 | Rigging Manual 5.4 LOCKED AND UNLOCKED EXAMPLE UNLOCKED LOCKING PIN LOCKED...

  • Page 19: Transportation Options

    VTX B28 | Rigging Manual 6 - TRANSPORT A TION OPTIONS B28 subwoofers can be transported singly or in stacks. The VTX B28 VT Vertical Transporter cart allows transporting stacks of up to four B28 subwoofers. When stacked in blocks of two, three, or four, B28 cabinets can be transported in either front-firing or cardioid configurations.

  • Page 20: Rotating The Dolly Tabs For Use With The Acc Dolly

    VTX B28 | Rigging Manual 6.1 ROT A TING THE DOLL Y T ABS FOR USE WITH THE ACC DOLL Y Two dolly tabs at the front of the B28 are used to secure the front-face ACC dolly board to the B28. The tabs are retractable and ship from the factory in the retracted position inside the B28.

  • Page 21: Vtx B28 Acc Dolly Overview

    VTX B28 | Rigging Manual 7 - VTX B28 ACC DOLL Y OVERVIEW The VTX B28 ACC dolly board features two beveled, recessed, rotating cams (one on each side), which are used to attach the dolly board to a B28 cabinet. The dolly board self-seats onto the B28 mounting tabs, and the rotating cams secure the dolly onto the B28. CAM MECHANISM: UNLOCKED CAM MECHANISM: LOCKED TIP: The rotating cam mechanism can be released using your feet while B18 cabinets are face down.

  • Page 22: Attaching The Vtx B28 Acc Dolly

    VTX B28 | Rigging Manual 7.1 A TT ACHING THE VTX B28 ACC DOLL Y STEPS: • Flip one of the two cam mechanisms to the locked position. • Slide the ACC dolly board onto the B28 from either side. •...

  • Page 23: Stacking The Acc Dolly Boards

    VTX B28 | Rigging Manual 7.2 ST ACKING THE ACC DOLL Y BOARDS VTX B28 ACC dollies can be stacked together for storage. The dolly’s handles and wheel wells were designed to allow stacking without having to touch or manually turn the wheels. When the ACC is held by the handle near its edge, gravity orients the wheels downward. Alignment arrows are located near one edge on both the top and bottom of the ACC to identify the correct orientation.

  • Page 24: Truck Packing With Acc

    VTX B28 | Rigging Manual 7.3 TRUCK PACKING WITH ACC OPTION 1: On end, four across. OPTION 2: On wheels, four across, stacked two high. 2286 mm (90.00 in)

  • Page 25: The Vertical Transporter

    VTX B28 | Rigging Manual 8 - THE VERTICAL TRANSPORTER The VTX B28 VT Vertical Transporter is a robust, lightweight cart solution for vertically transporting up to four VTX B28 enclosures. The VTX B28 VT is constructed of aluminum and steel parts and measures 57 inches (1448 mm) wide and 32 inches (813 mm) deep. Stacks of two, three, or four B28 cabinets can be transported while stacked in either front-firing or cardioid configurations.

  • Page 26: Installing Vtx B28 Cabinets On The Vt

    VTX B28 | Rigging Manual 8.2 INST ALLING VTX B28 CABINETS ON THE VT The VT includes corner guides that align and center the cabinet on the cart. This makes it very easy to land a B28 array on a VT without guesswork or needing to relocate the cabinets once landed.

  • Page 27: Vtx B28 Vt Cvr

    VTX B28 | Rigging Manual 8.3 VTX B28 VT CVR The VTX B28 VT CVR is a heavy-duty soft cover designed to work with the VTX B28 VT Vertical Transporter. The B28 VT CVR is sized to cover three or four VTX B28 enclosures and features two industrial-rated zippers for easy and reliable deployment. The cover includes input-panel flaps, allowing VTX B28 enclosures to be tested without having to remove the cover.

  • Page 28: Stacking The Vtx B28 Vt

    VTX B28 | Rigging Manual 8.4 ST ACKING THE VTX B28 VT VTX B28 VT carts can be stacked for storage. STEPS: • Rotate the VT wheels inward to point towards the opposite end of the cart. • Line up the wheels to seat into the wheel wells of the VT below it. •...

  • Page 29: Truck Packing With Vt

    VTX B28 | Rigging Manual 8.5 TRUCK PACKING WITH VT 2434 mm (96 in)

  • Page 30: The Vtx B28 Suspension Bar

    VTX B28 | Rigging Manual 9 - THE VTX B28 SUSPENSION BAR The VTX B28 SB is a lightweight suspension bar for use as an array frame when hanging VTX B28 subwoofer arrays. The suspension bar connects directly to the B28 left and right rigging bars and includes support for both single-point and dual-point configurations. Up to 16 VTX B28 cabinets can be suspended, and two 5/8-inch shackles are included.

  • Page 31: Suspending B28 Arrays

    VTX B28 | Rigging Manual 9.2 SUSPENDING B28 ARRA YS Suspension of a B28 array begins with attaching the suspension bar to the first cabinet. The steps outlined over the next few pages assume the use of Vertical Transporters but similar steps are used to suspend arrays using the ACC accessory. To start the process, use the two RED levers near the top of the cabinet to extend the link bar of the first B28.
  • Page 32 VTX B28 | Rigging Manual Once the suspension bar is securely attached, the array is ready for suspension. Next open the LOCK of the very last B28 to release the VT. This will allow for the VT to remain on the ground after lifting. The VT can be released after the fact but it is easier and safer to release the VT ahead of time.
  • Page 33 VTX B28 | Rigging Manual The next step is to connect the flown array to additional B28 stacks on the ground. Lift the flown array high enough to allow a stack to be placed under the array. Once aligned, lower the flown array onto the stack. The two skids under the B28 will align the arrays. If the cabinets are not perfectly aligned, gently push the flown array for alignment.

  • Page 34: Disassembling Arrays

    VTX B28 | Rigging Manual 9.3 DISASSEMBLING ARRA YS Disassembling B28 arrays starts by lowering the array onto the first VT. Always ensure that the LOCK of the last B28 is open before lowering the array. This enables the B28 to properly attach to the VT. Once the VT is attached, open the lock of the cabinet where you want to separate the arrays.
  • Page 35 VTX B28 | Rigging Manual STEPS: • Lift to separate the arrays. • Lower the link bar to the storage position. • Repeat until array is disassembled and attached to VTs.

  • Page 36: Suspension Bar Use Cases

    VTX B28 | Rigging Manual 9.4 SUSPENSION BAR USE CASES The VTX B28 Suspension Bar can be deployed in both dual-point and single-point configurations as illustrated below. The mechanical capacity of the suspension bar is the same for both configurations (16 B28) but a higher safety factor is realized in dual-point setups. Consult the LAC-3 software application for actual safety factors for a given array.

  • Page 37: The Vtx B28 Gnd

    VTX B28 | Rigging Manual 10 - THE VTX B28 GND The VTX B28 GND is an outrigger accessory that improves stability in ground stack configurations built on the VTX B28 subwoofer. The B28 GND connects directly to the B28’s integral rigging hardware and enlarges the base footprint of the stack. The B28 GND can be used with B28-only ground stacks of more than four enclosures, or when full-range VTX speakers are stacked on top of B28 subwoofers using one of the supported base plate accessories.

  • Page 38: Vtx B28 Gnd Examples

    VTX B28 | Rigging Manual 10.2 VTX B28 GND EXAMPLES Below are some examples showing the VTX B28 GND being used with supported base plates like the VTX A8 BP and VTX A12 BP. Base plates attach to the M20 mount plates at the top of the B28. For more information on installing base plates, refer to the Rigging Manuals for the appropriate systems.

  • Page 39: The Vtx A12 Vt Gnd

    VTX B28 | Rigging Manual 11 - THE VTX A12 VT GND The VTX A12 VT GND outrigger system works in conjunction with compatible Vertical Transporter carts to improve stability in ground stack configurations. The two outriggers extend in front of and behind the stack and connect to the VT using the included quick release pins.
  • Page 40 VTX B28 | Rigging Manual Once the outriggers are under the VT, remove the two quick release pins labeled FRONT and REAR VT Connection Points and attach the outriggers. The two QRPs in the storage positions should remain there; they are never used in this application . Once all the parts are together, the screw jacks are used to lift the stack off the ground.

  • Page 41: Vtx B28 Gnd + Vtx A12 Vt Gnd Examples

    . Note that calculations in LAC-3 always assume flat, even ground and ideal conditions . Always use good judgment and best practices to assemble arrays . JBL Profes- sional recommends that all ground stack arrays be secured to the ground, even when the configuration is shown...

  • Page 42: Using The M20 Pole Mount Attachment

    The B28 includes standard M20 pole mount plates for attaching extension rods such as the JBL SS5-BK or other JBL supported ac- cessories like base plates. This allows using the B28 subwoofer with a number of JBL full-range speakers like the VTX F12/F15 or VRX series products.

  • Page 43: Specifications

    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.

  • Page 44: Vtx B28 Acc

    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.

  • Page 45: Vtx B28 Vt

    2: Weight includes the VTX B28 VT only. Soft cover not included. 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...

  • Page 46: Vtx B28 Gnd

    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.

  • Page 47: Contact Information

    +1 (844) 776-4899 www.jblpro.com PROFESSIONAL CONT ACTS, OUTSIDE THE U.S.A.: Contact the JBL Professional Distributor in your area. A complete list of JBL Professional international distributors is provided at our U.S.A. website: www.jblpro.com HARMAN Professional EMEA HARMAN Professional APAC...
  • Page 48 VTX B28 | Rigging Manual...

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