JBL VTX Series User Manual
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Summary of Contents for JBL VTX Series
- Page 1 VTX A8 | User Manual...
- Page 2 VTX A8 | User Manual GENERAL INFORMATION VTX A8 - User Manual Document Number: 1000337283 Version: A - EN Distribution Date: 08/25/2018 Copyright © 2018 by HARMAN International; all rights reserved JBL PROFESSIONAL 8500 Balboa Blvd Northridge, CA 91329...
- Page 3 Thank you for purchasing JBL VTX Series products Of all the achievements JBL has made over the years, the VTX Series stands as a milestone in the practical application of creative engineering. The next generation in line arrays, VTX heralds a new era in performance, system integration and user friendliness.
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Page 4: Table Of Contents
VTX A8 | User Manual T ABLE OF CONTENTS 1 - DECLARATION OF CONFORMITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 - SAFETY . - Page 5 VTX A8 | User Manual 8.2 - B18 on Crown I-Tech 12000HD ............... . 22 8.2 - B18 on I-Tech 4x3500HD .
- Page 6 VTX A8 | User Manual 16.2 - VTX B18 ..................39 17 - CONTACT INFORMATION .
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Page 7: Declaration Of Conformity
STANDARD DESCRIPTION TEST AGENCY Applies to machinery and lays down essential 2006/42/EC health and safety requirements Tested at JBL Professional MACHINE DIRECTIVE ISO12100 Applies to loudspeaker and lays down essential 2014/35/EC health and safety requirements. Tested at JBL Professional... -
Page 8: Safety
VTX A8 | User Manual 2 - SAFETY Before using a JBL VTX Series system, please review the following for important information on safety and protection of your investment. 2.1 - SAFETY INSTRUCTIONS Read these instructions Keep these instructions Heed all warnings... -
Page 9: Inspection And Maintenance
For all other hardware and fittings, refer to the hardware manufacturer’s inspection and maintenance guidelines for process . 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 10: Symbols
VTX A8 | User Manual 2.6 - SYMBOLS The following set of symbols are used in this document: CAUTION: This symbol gives notice of a potential risk of harm to the individual or the equipment. Instruction marked with this symbol must be strictly followed. TIP: This symbol gives notice of helpful, relevant information about the topic. -
Page 11: System Components
VTX A8 | User Manual 3 - SYSTEM COMPONENTS VTX A8 VTX B18 VTX S28 VTX G28 Fault Menu/Exit Thermal 1 2 3 4 Power Clip Prev Bridge 1/2 Bridge 3/4 Data DRIVECORE SERIES Signal Next Ready Fault Fault Thermal Thermal Power Bridge 1/2... -
Page 12: Compatible Accessories
VTX A8 | User Manual 4 - COMPA TIBLE ACCESSORIES All listed accessories are compatible with the VTX A8 and in some case the VTX B18. For B18 specific accessories refer to the VTX B18 User and Rigging manuals found at www.JBLpro.com. 4.1 - VTX A8 AF - ARRA Y FRAME •... -
Page 13: Vtx A8 Sb - Suspension Bar
VTX A8 | User Manual 4.4 - VTX A8 SB - SUSPENSION BAR • Compatible with VTX A8 and VTX B18 • Maximum Limit: 24 x VTX A8 / 16 x VTX B18 • Used for pull-back applications • Shackle Size: 5/8” 4.5 - VTX A8 VT - VERTICAL TRANSPORTER •... -
Page 14: Vtx Nl824 - Breakout Cable
TIP: For B18 specific accessories refer to the VTX B18 User and Rigging manuals found at www.JBLpro.com. 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 15: Software
5.2 - ARRA Y LINK JBL Array Link is a mobile companion app that works in conjunc- tion with JBL’s LAC software to assist with deploying JBL VTX Series systems. Array Link uses a QR code system to transfer all mechanical array information from the main LAC application to a mobile phone. -
Page 16: Introduction
6.1 - VTX A8 The VTX A8 is a next-generation line array element that delivers JBL Professional’s flagship VTX A Series technology in a compact solu- tion for small to mid-size rental and installed applications. The VTX A8 was designed to solve the diverse sound reinforcement needs of production companies, rental houses, theaters, houses of worship, as well as production applications requiring front fills, side arrays or other auxiliary support for larger-scale VTX systems. -
Page 17: Vtx B18
Stream™ double-flared exponential low-frequency port design to improve airflow and reduce audible turbulence, even at maximum excursion. The B18 shares the industrial design of the JBL’s VTX A-Series products and has the same width and suspension hardware as the VTX A8, allowing the two products to be used together in a variety of flown or ground-stacked configurations. The VTX B18 can be deployed in omni-directional or cardioid configurations, in arrays of up to 16 enclosures. -
Page 18: Connections
7 - CONNECTIONS The JBL VTX A8 is equipped with two Neutrik NL4 SpeakON connectors. Both NL4 connectors are wired in parallel and can be used as the system input or as a through connection for daisy-chaining multiple cabinets together. The NL4 connectors are installed upside down so that the NL4 locking pin position can be seen from under the array. -
Page 19: A8 Internal Wiring
VTX A8 | User Manual 7.1 - A8 INTERNAL WIRING Passive Network MF / HF 7.1 - B18 INTERNAL WIRING FRONT NL4 REAR PANEL NL4 Pin Selection Switch... -
Page 20: System Amplification & Wiring
Standard JBL presets are available for both the Crown I-Tech 4x3500HD and Crown I-Tech 12000HD. The most up-to-date presets are available for download from the www.jblpro.com website and are always bundled in the latest version of JBL’s Performance Manager control software. -
Page 21: A8 On Crown I-Tech 4X3500Hd And Nl8 Cables
SPL capabilities. Circuits of 2 cabinets can be used when higher circuiting resolution is necessary. The example below illustrates how to connect 3 x VTX A8 cabinets to a 2-channel I-Tech HD amplifier using a standard 4-contactor NL4 cable. Amplifier Rear Panel NL4 Cable Crown I-TECH HD JBL VTX A8 Amplifier Channels Channel 1 A8 LF Channel 2... -
Page 22: B18 On Crown I-Tech 12000Hd
NL4 Cable Crown I-TECH HD JBL VTX B18 CAUTION: In this configuration, only the Channel-1 NL4 connector can be used on the I-Tech 12000HD amplifier. The Channel-1 NL4 connector is wired to both Channel-1 and Channel-2 were Channel-2 includes only Channel-2. -
Page 23: B18 On I-Tech 4X3500Hd
VTX A8 | User Manual 8.2 - B18 ON I-TECH 4X3500HD When using Crown Audio I-Tech 4x3500HD amplifiers, up to four VTX B18 (1 x per circuit) subwoofers can be powered per amplifier. Based on the B18 component resource requirements, this allows for optimum power-to-transducer ratio without compromising the maximum SPL capabilities of the system. -
Page 24: Vtx A8 Preset Library
TIP: The VTX A8 presets provide a well-balanced tonal starting point for a given array size. The Array Size Compensation filter found in the JBL Line Array Control Panel (LACP) can be used to further fine-tune the tonal balance of an array for a... -
Page 25: Subwoofer Options
VTX A8 | User Manual 10 - SUBWOOFER OPTIONS VTX A8 presets are designed for a 3:2 minimum cabinet ratio when used with the VTX B18, and a 3:1 ratio for when used with dual-18” subwoofers line the VTX G28 or VTX S28 . The minimum recommended ratios provide sufficient headroom for both the subwoofers and the full-range cabinets to reach MAX SPL (limiters) at the same time, while maintaining a minimum of 10dB SUB to TOP low-frequency contour. -
Page 26: Time Alignment
VTX A8 | User Manual 10.4 - TIME ALIGNMENT The VTX A8 presets provide proper system summation with companion VTX subwoofers (all models) under physically coupled config- urations (stacked or suspended) and when used with corresponding B18, G28, S28 and S25 presets. This pre-alignment is done at the factory, allowing any VTX subwoofer to be used with any VTX loudspeaker without needing specific subwoofer presets for each system and configuration. -
Page 27: Configuration Examples
VTX A8 | User Manual 11 - CONFIGURA TION EXAMPLES 11.1 - SMALL SIZE A8 SYSTEM 11.2 - MEDIUM SIZE A8 SYSTEM... -
Page 28: Large Size A8 System
VTX A8 | User Manual 11.2 - LARGE SIZE A8 SYSTEM 11.2 - LARGE A8 - A12 SYSTEM... -
Page 29: Frequency Response
The frequency response of a line array is determined by many factors, including the array size (number of boxes), array curvature (box- to-box angles) and the listening distance. JBL factory presets are designed to create a well-balanced tonal starting point for given array conditions. -
Page 30: Line Array Control Panel
12.1 - ACCESSING LACP LACP filters can be modeled in JBL’s Line Array Calculator and then imported into JBL’s Performance Manager for application to actual devices. To access LACP within the Line Array Calculator, first create circuit groups by using the included grouping feature. The created groups should represent the actual array amplification. -
Page 31: Filter 1 - Array Size Compensation
VTX A8 | User Manual 12.2 - FIL TER 1 - ARRA Y SIZE COMPENSA TION Filter 1 is used to correct for LF/MF buildup when the array size/shape differ from that for which the factory preset was designed. LF adjustments should be applied to all cabinets within the array;... -
Page 32: Example Using Lacp
VTX A8 | User Manual 12.6 - EXAMPLE USING LACP This example is for a 12-cabinet VTX A8 array. The standard A8 preset is used with the Array Size Compensation filter set to –3dB to off- set LF buildup and achieve a flatter frequency response. As seen from the illustration below, Array Size Compensation is globally applied to all array circuits. -
Page 33: Testing Vtx A8
VTX A8 | User Manual 13 - TESTING VTX A8 Speakers need to be periodically checked and maintained in order to assure long-term performance and reliability, and the VTX A8 is no exception. While the system is designed for utmost reliability, it is important to confirm that the system is operating within specified tolerances to ensure optimal performance for years to come. -
Page 34: Testing Individual Components
VTX A8 | User Manual 13.1 - TESTING INDIVIDUAL COMPONENTS Testing the individual sections of an A8 enclosure requires removing the input panel and bypassing the passive network. To do that first remove the 10 x T15 screws holding the panel, and then slide the input panel out of the A8 enclosure. Once the panel has been removed, disconnected the Molex connector from the board as illustrated below. -
Page 35: Using Performance Manager
VTX A8 | User Manual 13.2 - USING PERFORMANCE MANAGER When in the field, the Test System Mode in the Performance Manager software can be used to test an A8 system. This test method is quick and especially useful for determining whether all the speaker cables, including cabinet-to-cabinet NL jumpers, are properly functioning. -
Page 36: 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 37: Vtx B18
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 38: Acoustic Measurements
VTX A8 | User Manual 15 - ACOUSTIC MEASUREMENTS 15.1 - VTX A8 FREQUENCY RESPONSE BEAMWIDTH -180 1000 10000 20000 1000 10000 20000 Frequency (Hz) Frequency (Hz) Horizontal Beamwidth (-6dB) VTX A8 FL VTX A8 FL 80 VTX A8 Phase 15.2 - VTX B18 FREQUENCY RESPONSE 1000... -
Page 39: Dimensions
VTX A8 | User Manual 16 - DIMENSIONS 16.1 - VTX A8 226.60mm (8.92”) 761.29 mm (29.97”) 375.16mm (14.77”) 16.2 - VTX B18 546.0mm (21.5”) 736.6mm (29.0”) 761.29 mm (29.97”) - Page 40 Jupiter 2A Block, 4 Floor Marathahalli Ring Road Bangalore 560103, India +918049365905 www.harman.com Professional Contacts, Outside the USA: 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...