JBL VTX Series User Manual
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Summary of Contents for JBL VTX Series
- Page 1 VTX A12 | User Manual...
- Page 2 VTX A12 | User Manual GENERAL INFORMATION VTX A12 - User Manual Document Number: 1000297494 Version: D - EN Distribution Date: December 3, 2020 Copyright © 2020 by HARMAN International; all rights reserved JBL PROFESSIONAL 8500 Balboa Blvd Northridge, CA 91329...
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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 A12 | User Manual T ABLE OF CONTENTS 1 - DECLARATION OF CONFORMITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 - SAFETY . - Page 5 VTX A12 | User Manual 10 - SUBWOOFER OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 10.1 SUB/LF Preset Options .
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Page 6: 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 MACHINERY DIRECTIVE ISO12100 Applies to loudspeaker and lays down essential 2014/35/EC health and safety requirements. Tested at JBL Professional... -
Page 7: Safety
11. Contact JBL Professional for advanced servicing issues. 12. CAUTION - DO NOT PERFORM ANY SERVICING UNLESS YOU ARE QUALIFIED TO DO SO. -
Page 8: 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 9: Symbols
VTX A12 | User 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 10: System Components
VTX A12 | User Manual 3 - SYSTEM COMPONENTS VTX A12 / VTX A12W VTX B28 VTX S28 VTX G28 Fault Fault Thermal Thermal Power Bridge 1/2 Clip Clip Bridge 3/4 Data Menu/Exit Prev Next Signal Signal Ready Ready Fault Menu/Exit Thermal 1 2 3 4... -
Page 11: Compatible Accessories
Used for suspending VTX A12 enclosures • Support for up to (18) VTX A12 • Lightweight design 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 12: Vtx A12 Vt - Vertical Transporter
VTX A12 | User Manual 4.4 VTX A12 VT - VERTICAL TRANSPORTER • Vertical Transport cart for four VTX A12 enclosures • Truck pack-friendly dimensions • Hard top included for easy stacking and transportation • Built-in stacking features for easy storage •... -
Page 13: Vtx A12 Bp - Base Plate
VTX A12 | User Manual 4.8 VTX A12 BP - BASE PLA TE • Enables ground stacking VTX A12 arrays • Universal M20 threaded pole mount • Attaches directly to VTX B28 subwoofer enclosure • Array angles selectable between -15 degrees and +5 degrees •... -
Page 14: Software
5.2 ARRA Y LINK Array Link is a mobile companion app that works in conjunction with LAC-3 software to assist in deployment of VTX Series sys- tems. Array Link uses a QR code system to transfer all mechani- cal array information from the main LAC-3 application to a mobile phone. -
Page 15: Introduction
6.1 VTX A12/VTX A12W JBL VTX A12 is a complete tour sound solution for mid- to large-sized touring applications and high-end fixed installations. VTX A12 was designed from scratch to address the unique challenges of rental companies, FOH engineers, and tour sound production crews. -
Page 16: Vtx A12 Vs Vtx A12W
VTX A12 | User Manual 6.2 VTX A12 VS VTX A12W The A12 is available in standard and wide-coverage versions. The A12 offers 90-degree horizontal coverage, while the A12W offers 120-degree horizontal coverage. The A12 and A12W are acoustically and mechanically compatible, and can be used to create homog- enous or combination arrays. -
Page 17: Connections
VTX A12 | User Manual 7 - CONNECTIONS The VTX A12 is equipped with two Neutrik NL8 speakON connectors, which are wired in parallel, so that one can be used to receive input while the other acts as a through connection for daisy-chaining cabinets. The NL8 connectors are installed upside down, so that the NL8 locking pin position can be seen from under the array. -
Page 18: System Amplification
Standard A12 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 www.jblpro.com, and are always bundled in the latest version of JBL’s Performance Manager control software. -
Page 19: Using The A12 With Crown I-Tech 12000Hd
Channel 2 A12 LF TIP: Other channel assignments can be implemented when using two-channel Crown I-Tech HD amplifiers. Use JBL’s Per- formance Manager control software to assign speaker presets. CAUTION: Make sure the total number of VTX A12 enclosures per circuit/amplifier does not exceed the recom- mended maximum . -
Page 20: Vtx A12 Preset Library
The VTX A12 presets provide a well-balanced tonal starting point for a given array size. The Array Size Compensation filter in the JBL Line Array Control Panel (LACP) can be used to further fine-tune tonal balance for a given array size... -
Page 21: Subwoofer Options
VTX A12 | User Manual 10 - SUBWOOFER OPTIONS VTX A12 presets are designed for a 3:2 minimum ratio of A12 cabinets to VTX B28 or S28/G28 subwoofers. The 3:2 ratio provides suffi- cient headroom for both the subwoofers and the A12s to reach their MAX SPL (i.e. limiter threshold) at the same time, while maintaining a minimum of 10 dB subwoofer to full-range low frequency contour. -
Page 22: Preset Example 1
VTX A12 | User Manual 10.2 PRESET EXAMPLE 1 A12 Full-range or 80 Hz A12 Full-range or 80 Hz VTX B28 60 Hz or 80 Hz VTX B28 60 Hz or 80 Hz 10.3 PRESET EXAMPLE 2 VTX B28 80 VTX B28 80 VTX A12 80 VTX A12 80... -
Page 23: Time Alignment
VTX A12 | User Manual 10.4 TIME ALIGNMENT The VTX A12 presets provide proper system summation with companion VTX subwoofers in physically coupled configurations (stacked or suspended), and when used with corresponding subwoofer presets. This pre-alignment is done at the factory, allowing any VTX sub- woofer to be used with any VTX loudspeaker without the need for subwoofer presets specific to each system and configuration. -
Page 24: Frequency Response
The frequency response of a line array is determined by many factors, including the array size (number of boxes), array curvature (cab- inet-to-cabinet angles) and listening distance. JBL factory presets are designed to create a well-balanced tonal starting point for given array conditions. -
Page 25: Line Array Control Panel
VTX A12 | User Manual 12 - LINE ARRA Y CONTROL PANEL The JBL Line Array Control Panel (LACP) was designed to tailor the tonal balance of a line array with its five adjustable DSP filters. Each filter serves a specific purpose and accelerates the system tuning process. -
Page 26: Filter 1 - Array Size Compensation
VTX A12 | 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 or shape differ from that for which the factory preset was designed. Filter 1 is automatically applied globally to provide uniform LF adjustments to all cabinets in the array. -
Page 27: Example Using Lacp
VTX A12 | User Manual 12.6 EXAMPLE USING LACP This example is for a 12-cabinet VTX A12 array. The standard A12 preset is used, with the Array Size Compensation filter set to –3 dB to offset 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 28: Testing Vtx A12
VTX A12 | User Manual 13 - TESTING VTX A12 Speakers need to be periodically checked and maintained to assure long-term performance and reliability. While the VTX A12 is designed for the utmost reliability, it is important to confirm that the system is operating within specified tolerances to ensure optimal performance for years to come. -
Page 29: Using Performance Manager
VTX A12 | User Manual 13.2 USING PERFORMANCE MANAGER When in the field, the Test System Mode in Performance Manager can be used to test an A12 system. This test method is quick and especially useful for determining whether all the speaker cables, including cabinet-to-cabinet NL8 jumpers, are properly functioning. To perform the test, Performance Manager uses the I-Tech HD’s built-in noise generator, in conjunction with the amplifier’s current draw and voltage-sensing capabilities, to generate a nominal load impedance reading for each amplifier output channel. -
Page 30: 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 31: Vtx A12W 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 32: Acoustic Measurements
VTX A12 | User Manual 15 - ACOUSTIC MEASUREMENTS 15.1 VTX A12 FREQUENCY RESPONSE BEAMWIDTH -180 1000 10000 20000 1000 20000 Frequency (Hz) Frequency (Hz) VTX A12 FL VTX A12 FL 80 VTX A12 Phase Horizontal Beamwidth 15.2 VTX A12W FREQUENCY RESPONSE BEAMWIDTH -180... -
Page 33: Dimensions
VTX A12 | User Manual 16 - DIMENSIONS 1091 mm (43 in) 330 mm (13 in) 1117 mm (44 in) 203 mm (7.9 in) 165 mm (6.5 in) 10.00° 493 mm (19.4 in) -
Page 34: Contacts 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...
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