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JBL VTX B18 Series, Руководство пользователя

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36

VTX B

18

 

| User Manual

15 - SPECIFICATIONS

15.1 - VTX B18

SYSTEM

Frequency Range (-10 dB):

28 Hz - 80 Hz (Preset: VTX B18 80)

Coverage Pattern Options

1

: 

Omni-directional or Cardioid 

System Input Power Rating

2

:

1300W Continuous (IEC/100 hour)

Maximum Peak Output

3

:

135dB (Preset: VTX B18 80)

 System Amplification:

Crown Audio I-Tech 12000HD

Crown Audio I-Tech 4x3500HD

Required Amplifier Channels:

1-channel

Number of Cabinets per Circuit

IT-12000HD:

IT-4x3500HD:

2 x VTX B18

1 x VTX B18

System Impedance

4

:

8 ohms

TRANSDUCERS

 

Low Frequency :

1 x JBL 2288H, 18in diameter, dual 4in diameter voice coil, neodymium Differential Drive   

ENCLOSURE

Construction :

18mm and 15mm ,11-ply Baltic birch plywood, Black DuraFlex

TM

 finish, integral recessed handles

 

  

IP Rating

5

 :

IP55 (IEC 60529) 

 

  

Suspension :

Captive suspension plates, quick-release pins, spring-loaded mechanism

 

Grill :

Powder-coated 14-guage hex-perforated steel with acoustically transparent black cloth backing

Connectors 

Type :

Pin Assignments :

Neutrik® SpeakON® NL-4 (2x at the rear and 2x at the front)

Selectable between Pins 1 ± and Pins 2 ± 

Dimensions (H x W x D) :

551.68mm x 761.29mm x 736.6mm

21.72in x 29.97in x 29.0in  

Net Weight :

68 kg (150 lbs)

Footnotes:

1: Based on speaker preset selection and cabinet orientation/configuration. 

2: IEC Standard: IEC shaped noise with 6dB crest factor based on nominal impedance and a duration of 100 hours. Continuous is defined as 2x RMS.

3: Peak, unweighted SPL, measured under 

half-space

 conditions at 1 meter using broadband pink noise with a 12dB crest factor and specified preset.

4: Nominal impedance within the stated frequency range of the product. Minimum impedance is 5.6Ω is 150Hz.  

5: Front face at 0 degree or greater down angle to allow the cabinet to drain water. Suspension components fully weather rated for indoor or covered outdoor conditions where humidity is nominally under 50% and not local 

to bodies of corrosive materials.

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.

Содержание VTX B18 Series

Страница 1: ...VTX B18 User Manual...

Страница 2: ...ERAL INFORMATION VTX B18 User Manual Document Number 1000337285 Version B EN Distribution Date 01 05 2019 Copyright 2018 by HARMAN International all rights reserved JBL PROFESSIONAL 8500 Balboa Blvd N...

Страница 3: ...ineering support the human factor and technical tools that are key to the proper specification and configuration of the VTX system in any venue anywhere in the world The VTX Series is a result of JBL...

Страница 4: ...5 VTX B18 VT Vertical Transporter 12 4 6 VTX B18 VT CVR Soft Cover 12 4 7 VTX B18 ACC Accessory Cover and Casterboard 12 4 8 VTX RC500 Rotating Clamp 13 5 SOFTWARE 14 5 1 Line Array Calculator 3 TM 1...

Страница 5: ...SPL Differences 28 12 FLOWN CARDIOID CONFIGURATIONS 29 12 1 Array Configurations 29 13 CARDIOID PRESETS IN PERFORMANCE MANAGER 31 13 ELECTRONIC DELAY STEERING EDS 32 13 1 EDS Example No Delays 32 13 2...

Страница 6: ...tional 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 MACHINE DIRECT...

Страница 7: ...excessive SPL can cause hearing damage the loudspeaker is easily capable of generating sound pres sure levels SPL sufficient to cause permanent hearing damage to performers production crew and audienc...

Страница 8: ...d maintenance procedures or any other abuse Prior to suspending the system an expert trained and experienced in suspending speaker systems should inspect all parts and com ponents All information pres...

Страница 9: ...ment Instruction marked with this symbol must be strictly followed TIP This symbol gives notice of helpful relevant information about the topic INSTRUCTIONS This symbol gives notice of instructions th...

Страница 10: ...rs Crown Audio 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 Bridg...

Страница 11: ...VTX B18 0 5 pick point resolution Built in storage position for extension bar Includes 1 x VTX A8 AF EB extension bar Support for 3rd party laser inclinometers Compatible shackle size 5 8 Extension Ba...

Страница 12: ...esting purposes Clear see through pocket for shipping label Handle cutouts for easy transportation Heavy duty industrial grade zippers 4 7 VTX B18 ACC ACCESSORY COVER AND CASTERBOARD Front face dolly...

Страница 13: ...lways 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 Universal truss pipe clamp adapter Wo...

Страница 14: ...oftware 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 All relevant riggi...

Страница 15: ...rear input panel allows for selecting between channel 1 or 2 of the NL4 cable minimizing cable requirements VTX BUILD QUALITY The VTX B18 adopts the VTX A Series signature full face grille de sign whi...

Страница 16: ...n can be seen from under the array Front NL4 Connectors IN OUT A channel selection switch is available at the rear of the B18 which allows for selecting between Pin 1 and Pin 2 of the NL4 connector ca...

Страница 17: ...B18 VT CVR a reinforced protective cover is available to cover and protect the subwoofers during transportation The other option is using the VTX B18 ACC accessory kit which includes a front face doll...

Страница 18: ...llips screws holding the bracket 8 1 ROT A TING THE DOLL Y T ABS FOR USE WITH THE ACC DOLL Y There are two dolly tabs available at the front of the B18 that are used to secure the front face ACC dolly...

Страница 19: ...of the brackets and reinstall the Phillips screws Reconnect the MolexTM connector and secure the grill 3 4 4 3 TOOLS REQUIRED A 4mm HEX key is required to remove the four M6 screws holding the grill o...

Страница 20: ...rk in conjunction with the standard B18 60 preset and used to drive rear facing B18 cabinets in cardioid configurations VTX B18 80 The 80Hz preset mode extends the upper frequency response of the B18...

Страница 21: ...ubwoofers 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 syste...

Страница 22: ...et for cardioid using JBL Performance Manager software application Up to two forward or two rear facing B18s can be used per amplifier channel When 4 conductor NL4 cables are used the B18 channel sele...

Страница 23: ...allows for optimum power to transducer ratio without compromising the maximum SPL capabilities of the system The example below illustrates how to connect 4 x VTX B18 cabinets to a 4 channel I Tech HD...

Страница 24: ...ectors are used for wiring the rear facing B18 subwoofers A B A B A B A B Channel Selection Switch CAUTION Suspending this system should only be done by qualified persons following safe rigging practi...

Страница 25: ...ctional subwoofers involves stage noise and specifically reducing ex cessive low frequency energy from reaching the stage Other reasons could include avoiding over energizing a room with low frequency...

Страница 26: ...ion and higher ratios lower rejection Below are demonstrations of difference curves showing the front to back difference for the two most common B18 cardioid configura tions 2 1and 3 1 The 2 1 is idea...

Страница 27: ...ction directly behind the array As a minimum a distance of 1 5 meters 4 9 between stacks should be allowed 1 5m 4 9 min 11 3 MINIMUM SPACE FROM A W ALL When cardioid subwoofer stacks are placed in fro...

Страница 28: ...r facing subwoofers not only reject sound at the back of an array but also positively contribute to the sound pressure at the front of the array The contribution is not at the same rate as if all subw...

Страница 29: ...e and aiming None symmetric arrangements can be created but should always be modeled in LAC III first to ensure that the cancellation part of the array falls outside any of the audience areas The exam...

Страница 30: ...ofer at the bottom of an array is the least effective Rear facing subwoofers can be placed at the top of an array to keep energy off the ceiling 0 10 20 30 40 50 60 70 80 0 20 40 60 80 100 120 140 160...

Страница 31: ...and F FRONT switch buttons to reverse the orientation Switch the Device View back to Bandpass view 1 2 3 4 Once the orientation has been selected Performance Manager assigns the appropriate correspon...

Страница 32: ...onsists of three B18 enclosures with the bottom B18 facing backwards to create a 2 1 cardioid configuration The center to center spacing of the array was calculated at 2 5m 8 2 which makes the total l...

Страница 33: ...erate delay values for each B18 cluster and electronically alter the coverage of the array The goal is the electronically curve the array for a predetermine angle and open the coverage of the array Th...

Страница 34: ...his test is ap propriate for individual boxes and not groups With the B18 speaker unplugged from any amplifiers set a DMM to the resistance setting and place the probes across the Pin1 and Pin 2 leads...

Страница 35: ...Test System Mode and make sure all the speakers are muted Switch the Noise Generator to the ON position and change the level to a value between 30dB and 10dB Values lower than 30dB may not be suffici...

Страница 36: ...Pins 2 Dimensions H x W x D 551 68mm x 761 29mm x 736 6mm 21 72in x 29 97in x 29 0in Net Weight 68 kg 150 lbs Footnotes 1 Based on speaker preset selection and cabinet orientation configuration 2 IEC...

Страница 37: ...7 VTX B18 User Manual 16 ACOUSTIC MEASUREMENTS FREQUENCY RESPONSE 20 100 1000 10000 20000 Frequency Hz 30 20 10 0 10 SPL dB VTX B18 60 VTX B18 80 17 DIMENSIONS 736 6mm 29 0 761 29 mm 29 97 546 0mm 21...

Страница 38: ...w jblpro com HARMAN USA Technical Support Monday Friday 8 00am 5 00pm 1 844 776 4899 hprotechsupportusa harman com www harman com Harman Professional London Harman Westside Hemel Hempstead HP3 9TD Lon...

Страница 39: ......

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