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VTX A12 

| User Manual

2.5  ARE YOU NEW TO RIGGING? 

If you are new to rigging, you should:

•  Know the rules for safe rigging.
•  Attend a safe rigging seminar.
•  Meet and establish a relationship with a licensed mechanical or structural engineer. Get in the habit of asking them questions in-

stead of assuming their answers. Learn from what they tell you.

•  Research and understand the codes, practices and requirements of the venues where you intend to operate your sound system.

2.4  IMPORTANT SAFETY WARNING 

The information in this section has been assembled from recognized engineering data and is intended for informational purposes only. 
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.

All information presented herein is based upon materials and practices common to North America and may not directly apply to other 
countries because of differing material dimensions, specifications, and/or local regulations. Users in other countries should consult with 
appropriate engineering and regulatory authorities for specific guidelines.

Correct use of all included hardware is required for secure system suspension. Careful calculations should always be performed to 
ensure that all components are used within their working load limits before the array is suspended. Never exceed the maximum recom-
mended load ratings.

Before suspending any speaker system, always inspect all components (enclosure, rigging frames, pins, eyebolts, track fittings, etc.) for 
cracks, deformations, corrosion, or missing/loose/damaged parts that could reduce strength and safety of the array. Do not suspend 
the speaker until the proper corrective action has been taken. Use only load-rated hardware when suspending JBL suspendable loud-
speaker models.

2.6  INSPECTION AND MAINTENANCE 

Suspension systems are comprised of mechanical devices and, as such, require regular inspection and routine maintenance to ensure 
proper functionality. Before suspending or pole mounting any speaker system, always inspect all components (enclosure, suspension 
frames or brackets, pins, eyebolts, etc.) for cracks, deformations, corrosion, or missing/loose/damaged parts that could reduce strength 
and safety of the array. Do not suspend or pole mount a speaker until the proper corrective action has been taken.

Installed systems should be inspected at least once a year. The inspection must include a visual survey of all corners and load-bearing 
surfaces for signs of cracking, water damage, delamination, or any other condition that may decrease the strength of the loudspeaker 
enclosure.

Accessory suspension hardware provided with or for VTX systems must be inspected for fatigue at least once a year or as required by 
local ordinance. The inspection must include a visual survey of the material for signs of corrosion, bending, or any other condition that 
may decrease the strength of the fastener. Additionally, any eyebolts must be checked for possible spin-out of the enclosure.

For all other hardware and fittings, refer to the hardware manufacturer’s inspection and maintenance guidelines for process .

Summary of Contents for VTX Series

Page 1: ...VTX A12 User Manual...

Page 2: ...AL 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 Blv...

Page 3: ...sister companies VTX loudspeakers marry custom transducer design and in house manufacture breakthrough technologies and a com prehensive system approach to deliver a premium experience for all who com...

Page 4: ...12 VT Vertical Transporter 12 4 5 VTX A12 VT CVR Soft Cover 12 4 6 VTX A12 VT GND Ground Stack Accessory 12 4 7 VTX Delta Delta Plate 12 4 8 VTX A12 BP Base Plate 13 5 SOFTWARE 14 5 1 Line Array Calcu...

Page 5: ...lter 2 Atmospheric Absorption Compensation 26 12 4 Filter 3 HF Throw Distance Compensation 26 12 5 Filters 4 5 User PEQ 1 2 26 12 6 Example using LACP 27 13 TESTING VTX A12 28 13 1 Using a DMM Digital...

Page 6: ...l declare under our sole responsibility that the product to which this declaration relates is in conformity with the following standards STANDARD DESCRIPTION TEST AGENCY 2006 42 EC MACHINERY DIRECTIVE...

Page 7: ...amage The loudspeaker is easily capable of generating sound pressure levels SPL sufficient to cause permanent hearing damage to performers production crew and audience members Caution should be taken...

Page 8: ...aximum recom mended load ratings Before suspending any speaker system always inspect all components enclosure rigging frames pins eyebolts track fittings etc for cracks deformations corrosion or missi...

Page 9: ...llowed for proper installation and use of the product TOOLS REQUIRED This symbol gives notice of tools that must be used for proper installation and use of the product JBL is not responsible for the a...

Page 10: ...HD Amplifiers Crown V Rack Menu Exit Prev Next Power Bridge 1 2 Bridge 3 4 Data DRIVECORE SERIES Fault Thermal Clip 10 20 Signal Ready 1 2 3 4 Fault Thermal Clip 10 20 Signal Ready 1 Power Bridge 1 2...

Page 11: ...geometry dependent Three 5 8 inch shackles included Lightweight design 4 COMPA TIBLE ACCESSORIES All listed accessories are compatible with both the VTX A12 and A12W For more information on the access...

Page 12: ...height Zero gravity angle set hinge system Range 15 to 5 degrees Connects to the VTX A12 VT 4 7 VTX DEL T A DEL T A PLA TE Universal delta plate accessory for VTX systems Support for up to 24 VTX encl...

Page 13: ...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 Two part lightweight design Support...

Page 14: ...ftware 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 All relevant rigg...

Page 15: ...lec tion of angles while components are on the ground once the system is suspended the mechanism automatically locks cab inet angles in the designated positions Set angles simply by pulling and placin...

Page 16: ...tening distance from an array decreas es so does its coverage width Depending on the venue geometry A12W speakers can be used at the bottom of an array for broad near field coverage The use of identic...

Page 17: ...connectors are installed upside down so that the NL8 locking pin position can be seen from under the array VTX A12 internal NL8 pinout NL8 Pin Pin 1 Pin 2 Pin 3 Pin 4 Transducers LF Left LF Right MF H...

Page 18: ...presets are available for download from www jblpro com and are always bundled in the latest version of JBL s Performance Manager control software 8 1 USING THE A12 WITH CROWN I TECH 4X3500HD A Crown I...

Page 19: ...1 A12 MF Channel 2 A12 HF Crown I Tech 12000HD JBL VTX A12 Amplifier 2 Channels Channel 1 A12 LF Channel 2 A12 LF 8 3 CROWN AUDIO V RACK VTX A12 systems are compatible with the Crown V Rack 12000HD a...

Page 20: ...used when subwoofers are available VTX A12 This is the standard VTX A12 preset for array use A high frequency shelving response is applied to offset LF MF array buildup for nominally focused arrays e...

Page 21: ...ystem down to 45 Hz and the VTX A12 80 80 Hz preset which extends the frequency response of the system down to 80 Hz The VTX A12 full range preset is used when the system is operated without subwoofer...

Page 22: ...r Manual 10 3 PRESET EXAMPLE 2 VTX A12 80 VTX A12 80 VTX B28 80 VTX B28 80 VTX A8 FL 80 VTX B28 80 10 2 PRESET EXAMPLE 1 A12 Full range or 80 Hz VTX B28 60 Hz or 80 Hz A12 Full range or 80 Hz VTX B28...

Page 23: ...t delay should be added as needed to account for physical path length differences between suspended A12 arrays and ground stacked subwoofers If no acoustic measurement system is available delay values...

Page 24: ...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 For ex...

Page 25: ...is enables realistic and accurate DSP adjustments After creating the circuit groups click the LACP button under the DSP column Global filters like Filters 1 and 2 are automatically applied to all circ...

Page 26: ...above 1kHz 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 a...

Page 27: ...F Throw Distance compensation filter Filter 3 on the bottom circuit can apply HF attenuation to correct for proximity differences Simple adjustments to the LACP filters can get an A12 system to a very...

Page 28: ...et a DMM to the resistance setting and place the probes across the 1 2 3 and 4 leads Record the values indicated on the DMM for each pair of leads and refer to the chart below to either confirm correc...

Page 29: ...sure all speakers are muted Switch the Noise Generator to the ON position and set the level to a value between 30 dB and 10 dB Values lower than 30 dB may not be sufficient to trigger a reading Unmute...

Page 30: ...z 18 kHz Varies with array size and configuration System Input Power Rating1 LF MF HF 2x 800W Continuous IEC 100 hour 400W Continuous IEC 100 hour 150W Continuous IEC 100 hour Maximum Peak Output 146...

Page 31: ...Varies with array size and configuration System Input Power Rating1 LF MF HF 2x 800W Continuous IEC 100 hour 400W Continuous IEC 100 hour 150W Continuous IEC 100 hour Maximum Peak Output 146 dB Preset...

Page 32: ...y Hz 10 100 360 6 dB Beamwidth degrees VTX A12 FL VTX A12 FL 80 VTX A12 Phase BEAMWIDTH Horizontal Beamwidth 15 1 VTX A12 15 2 VTX A12W FREQUENCY RESPONSE 20 100 1000 10000 20000 Frequency Hz 20 10 0...

Page 33: ...33 VTX A12 User Manual 16 DIMENSIONS 1091 mm 43 in 1117 mm 44 in 330 mm 13 in 203 mm 7 9 in 10 00 493 mm 19 4 in 165 mm 6 5 in...

Page 34: ...n Dist Shenzhen 518067 China 400 166 7806 www harman com China HARMAN Professional India Prestige Technology Park Jupiter 2A Block 4th Floor Marathahalli Ring Road Bangalore 560103 India 1 800 208 888...

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