JBL VT4888 user manual

User manual for the device JBL VT4888

Device: JBL VT4888
Category: Car Speaker
Manufacturer: JBL
Size: 0.96 MB
Added : 3/9/2014
Number of pages: 20
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Abstracts of contents
Summary of the content on the page No. 1




Array Applications Manual

For models VT4889, VT4888, VT4887, VT4881, VT4880





Summary of the content on the page No. 2

TABLE OF CONTENTS PAGE GENERAL AMPLIFICATION NOTES & REQUIREMENTS…………………. 3 SUBWOOFER WIRING NOTES………………………………………………… 4 STANDARD AMPLIFICATION RACK LIMITER SETTINGS NOTES …………….……………………………..…….. 5 VT4887 & VT4881 TRANSDUCER COMPLEMENT.………………………………….…….. 5 AMPLIFIER CONFIGURATION OPTIONS VT4887 & VT4881 ARRAY WIRING……………………………………………. 7 VT4888 TRANSDUCER COMPLEMENT………………………………………… 8 AMPLIFIER CONFIGURATION OPTIONS VT4888 ARRAY WIRING………………………………………………………

Summary of the content on the page No. 3

GENERAL AMPLIFICATION NOTES & REQUIREMENTS • For the purpose of this discussion: Crown MA series amplifiers are used below. HF indicates High Frequency drivers, MF indicates Mid Frequency drivers, LF indicates Low Frequency drivers and VLF stands for Very Low Frequency drivers (subwoofers). • Equivalent amplifiers can be used as substitutions. • Users should observe differences in input sensitivity and maximum available power at a given impedance load. • Users may choose to use t

Summary of the content on the page No. 4

NOTES ON SUBWOOFER WIRING • VT4880: Users may choose to wire both 2258 (18”) components in parallel to one (1) channel of a MA-3600 or MA-5002 for (4) ohms load. In this case each amplifier channel drives one VT4880. If two VT4880 are wired in parallel, the load is two ohms and there will be no amplifier power headroom. • VT4881: Users may choose to wire both coils in a single 2256G component in parallel to one (1) channel of a MA-3600 or MA-5002 for (4) ohms load. In this case

Summary of the content on the page No. 5

NOTES REGARDING LIMITER SETTINGS • The recommended limiter threshold settings provide 3 dB of headroom before the component or bandpass peak voltage is reached. • The component or bandpass peak voltage is 6 dB above the voltage used at continuous maximum power. • These settings assume the use of a Crown MA-5002 in stereo mode with input sensitivity of 1.4V for a voltage gain of 37 dB. Amplifier limiter and Offset Integration switches are set to the off position. • If a different

Summary of the content on the page No. 6

Amplifier Configurations: 4 x VT4887 & 2 VT4881 / 3 MA- 5002 Amplifier Power Power Bandpass Nominal Limiter Amplifier Speakon NL8 Rating at Available to Peak Driving Impedance Threshold Channel Terminals Nominal each Voltage at Pins dBu Impedance Bandpass Vac 4 x 2407H Ch 1. Pins 4± & 8 x 2104H 4Ω 1800W 900W 54V -3 MA-5002VZ Ch2. 4 x 2407H Pins 4± & 8 x 2104H 4Ω 1800W 900W 54V -3 Ch 1. Pins 3± 4 x 2168J 1800W 900W 134V 4 4Ω MA-5002VZ Ch2. Pins

Summary of the content on the page No. 7

JBL Ver Tec VT4887 wit h VT4881 Power Ampl ifier configur at ions - 4 +2 Box Arr ay VT4881 NL8 Jumper Cable VT4887 NL8 Cr Cro ow wn n SINGLE MA MA- -5 5002V 002VZ Z Cable CH-2 CH-1 Pin 4 ± Pin 3 ± Crown 2Ω 2Ω 4887-LF 4887-MF/HF MA-5002VZ (2) MA-5002VZ CH-1 CH-1 Crown Power Amplifiers Pin 2± Pin 1± 4Ω 4 Ω MA-5002VZ 4881-VLF 4881-VLF IMPORTANT NOTES: All wiring configurations shown above use 8-conductor speaker cables terminated with Neutrik NL8 "Speakons". Ensure that each conductor in the cable

Summary of the content on the page No. 8

VT4888 Transducer Complement: Nominal Nominal Speakon AES Power 100 Peak Power Recommended Per Impedance Impedance Model NL8 HR Rating per Rating per Power per box per per Terminals Transducer Transducer Passband transducer Passband HF 2431H Pins 4± x 2 8Ω 16Ω 75W 300W 300W MF 2106H Pins 3± x 4 8Ω 8Ω 100W 400W 800W LF 2262H Pins 1± & 2± x 2 8Ω 8Ω + 8Ω 700W 2800W 2500W Amplifier Configurations: 4 VT4888 / 3 MA-5002VZ Amplifier Power Bandpass Nominal Power Available Limiter Ampli

Summary of the content on the page No. 9

Amplifier Configurations: 6 VT4888 / 4 MA-5002VZ Amplifier Power Bandpass Nominal Power Available Limiter Amplifier Speakon NL8 Rating at Peak Driving Impedance to each Threshold Channel Terminals Nominal Voltage at Pins Component dBu Impedance Vac Ch 1. Pins 4± 6 x 2431H 5.7Ω 1300W 216W 56V -3 MA-5002VZ Ch2. Pins 4± 6 x 2431H 5.7Ω 1300W 216W 56V -3 Ch 1. Pins 3± 12 x 2106H 2.7Ω 2000W 167W 112V 3 MA-5002VZ Ch2. Pins 3± 12 x 2106H 2.7Ω 2000W 167W 112V 3 C

Summary of the content on the page No. 10

JBL VERTEC VT4888 Line Arr ay Power Ampl ifier configur at ions - 4 Box Arr ay NL8 Jumper Cable NL8 Jumper Cable NL8 Jumper Cable NL8 Jumper Cable Pin 4 ± Crown Pin 4 ± 8Ω 8Ω MA-5002VZ Pin 4 ± Crown Pin 4 ± 8Ω 8Ω MA-5002VZ Pin 3 ± Pin 3 ± Crown 4Ω 4Ω MA-5002VZ Pin 3 ± Crown Pin 3 ± 4Ω 4Ω MA-5002VZ Pin 2 ± Crown Pin 2 ± 4Ω 4Ω MA-5002VZ Pin 1&2 ± Crown Pin 1&2 ± 2Ω 2Ω MA-5002VZ Pin 1 ± Pin 1 ± Crown 4Ω 4Ω MA-5002VZ 3 x Power Amplifiers 4 x Power Amplifiers OR (2Ω Load on LF Passband) (recommended)

Summary of the content on the page No. 11

VT4889 Transducer Complement: Nominal Nominal AES Power Peak Power Recommended Speakon NL8 Per Impedance Impedance Model 100 HR Rating Rating per Power per Terminals box per per per Transducer Transducer Passband Transducer Passband HF 2435H Pins 4± x 3 5.3Ω 16Ω 75W 300W 300W MF 2250H Pins 3± x 4 8Ω 8Ω 300W 1200W 1200W LF 2255H Pins 1± & 2± x 2 8Ω 8Ω + 8Ω 600W 2400W 800W + 800W Amplifier Configurations: 4 VT4889 / 3 MA-5002VZ Amplifier Power Bandpass Nominal Power Available Limi

Summary of the content on the page No. 12

Amplifier Configurations: 6 VT4889 / 4 MA-5002VZ Amplifier Power Bandpass Nominal Power Available Limiter Amplifier Speakon NL8 Rating at Peak Driving Impedance to each Threshold Channel Terminals Nominal Voltage at Pins Component dBu Impedance Vac Ch 1. Pins 4± 9 x 2435H 5.7Ω 1300W 145W 100V 2.5 MA-5002VZ Ch2. Pins 4± 9 x 2435H 5.7Ω 1300W 145W 100V 2.5 Ch 1. Pins 3± 12 x 2250H 2.7Ω 2000W 167W 150V 2.5 MA-5002VZ Ch2. Pins 3± 12 x 2250H 2.7Ω 2000W 167W

Summary of the content on the page No. 13

JBL Ver Tec VT4889 Line Arr ay Power Ampl ifier configur at ions - 4 Box Arr ay NL8 Jumper Cable NL8 Jumper Cable NL8 Jumper Cable NL8 Jumper Cable Pin 4 ± Crown Pin 4 ± 8Ω 8Ω MA-5002VZ Pin 4 ± Crown Pin 4 ± 8Ω 8Ω MA-5002VZ Pin 3 ± Pin 3 ± Crown 4Ω 4Ω MA-5002VZ Pin 3 ± Crown Pin 3 ± 4Ω 4Ω MA-5002VZ Pin 2 ± Crown Pin 2 ± 4Ω 4Ω MA-5002VZ Pin 1&2 ± Crown Pin 1&2 ± 2Ω 2Ω MA-5002VZ Pin 1 ± Pin 1 ± Crown 4Ω 4Ω MA-5002VZ 3 x Power Amplifiers 4 x Power Amplifiers OR (2Ω Load on LF Passband) (recommended

Summary of the content on the page No. 14

VERTEC SYSTEMS SUSPENSION HARDWARE & ASSEMBLY NOTES Arrays of similar VERTEC Model • Each VERTEC model uses the matching model of Array Frame (VT488X-AF) or Short Frame (VT488X-SF) to create clusters of the same model. • These same frames can also be used to ground stack the various systems. Arrays of Combined VERTEC Models • Clusters of combined models (i.e. VT4887s attached under a VT4889) use ADAPTER FRAMES to interconnect the various models. • These frames are t

Summary of the content on the page No. 15

VERTEC SYSTEMS SUSPENSION FRAMES & HINGE BARS VERTEC FRAME NOTES HINGE MODEL MODELS Part # 336892-001 VT4889 VT4889-AF Standard long frame. 16 VT4889 @ 7:1 DF* (4889 FRONT HINGE) VT4889-SF Standard short frame. 16 VT4889 @ 7:1 DF 339693-001 VT4800-UA Universal frame to hang any model to any model. (4889 REAR HINGE) VT4800-DA Adapter frame to hang 4 VT4887 under VT4889 339644-001 (4889 REAR HINGE FOR UA ADAPTER) 336892-001 VT4880 VT4889-AF Standard long fram

Summary of the content on the page No. 16

VERTEC VT4888, VT4887, VT4881 SYSTEMS: SUSPENSION FRAMES Page 16

Summary of the content on the page No. 17

VERTEC SYSTEMS: SUSPENSION HINGE BARS \ High-grade steel alloy hinge bars are used to couple adjacent boxes together. There are several different types. To ensure ease and proper inter-connection, make certain that the correct hinge bar model is matched to the appropriate Array Frame or Short Frame as well as the correct VERTEC model. Page 17

Summary of the content on the page No. 18

VT4889 with VT4887 attached using VT4800-DA Page 18

Summary of the content on the page No. 19

TYPICAL 8-BOX HANGING ARRAY The VT4889 full size, the VT4888 mid size, and VT4887 compact line array elements can be suspended from either the “AF” (long) or “SF” (short) array frame. Shown here, eight VT4887 suspended from a VT4887-AF array frame. Page 19

Summary of the content on the page No. 20

VERTEC SUPPORT TEAM DIRECTOR, TOUR SOUND APPLICATIONS ENGINEERS David Scheirman NORTH AMERICA Office phone: (818) 895-3458 Jay Fullmer, Applications Engineer Pager: (888) 861-1622 Office phone: (818) 895-3473 Email address: dscheirm@harman.com Mobile phone: (818) 324-8265 Email address: jfullmer@harman.com TOUR SOUND PRODUCT MANAGER Raul Gonzalez EUROPE Office phone: (818) 830-8749 Mark Bailey, Market Development Engineer Mobile phone: (818) 802-9176 Office phone:


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