Instruction/ maintenance manual of the product VRX-AF JBL
Go to page of 28
User ’ s Guide VRX932LAP VRX918SP VRX-AF VRX_Powered_UsersGuid#C77E6.qxp 9/21/07 5:05 PM Page 1.
2 VRX_Powered_UsersGuid#C77E6.qxp 9/21/07 5:05 PM Page 2.
3 P A TENTS VRX series products are manufactured and sold under U.S. patents 5,748,760; 6,1 12,847; 6,394,223; 6,847,726; 6,774,510; D483,743; and 6,768,806. CONTENTS Section 1. Safety Instructions 4 JBL DrivePack ® Declaration of Conformity 6 Section 2.
4 IMPORT ANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water . 6. Clean only with dry cloth. 7. Do not block any ventilation openings.
5 THIS APP ARA TUS CONT AINS POTENTIALL Y LETHAL VOL T AGES. TO PREVENT ELECTRIC SHOCK OR HAZARD, DO NOT REMOVE DRIVEP ACK CHASSIS, INPUT MODULE OR AC INPUT COVERS.
6 SAFETY AND EMC COMPLIANCE SPECIFICA TIONS EN 55103-1:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual land Entertainment Lighting Control Apparatus for Pro.
7 The VRX Series loudspeakers covered by this manual are not intended for fixed installation in outdoor or high moisture environments. Moisture can damage the speaker cone and surround and cause corrosion of electrical contacts and metal parts. Avoid exposing the speakers to direct moisture.
8.
9 VRX932LAP - 12", POWERED TWO-WA Y , LINE-ARRA Y LOUDSPEAKER SYSTEM FUNCTIONAL BLOCK DIAGRAM Frequency Range (-10 dB): 57 Hz - 20 kHz Frequency Response (±3 dB): 75 Hz - 20 kHz Coverage Pattern.
10.
11 VRX918SP - 18" POWERED SUBWOOFER Frequency Range (-10 dB): 31 Hz - 180 Hz Frequency Response (±3 dB): 34 Hz - 120 Hz Maximum Peak Output, SPL1: 126 dB SPL at 1m LF Driver: 1 x JBL 2268FF 457 .
12 INTRODUCTION T O THE JBL DRIVEP ACK ® DPC-2 INTEGRA TED AUDIO SYSTEM JBL DrivePack equipped loudspeakers are a family of fully integrated audio systems, coupling industry-leading loudspeaker techn.
13 AC POWER REQUIREMENTS JBL DrivePack DPC-2 systems are equipped with a DPC-2 multi-channel Dual-Bridged T echnology™ power amplifier and loudspeaker specific DSP electronics.
14 Line V oltage Selection: DrivePack DPC-2 amplifier models feature a user-configurable dual-voltage international power supply and is easily set to the appropriate local AC Power Mains voltage supply . A 2-way slide switch is provided to select 100-120V AC or 200-240V AC operation, 50/60Hz.
INDICA T ORS 6. PEAK Red LED, detects excessive input signal. Reduce the input level if this LED lights excessively . The LED illuminates when overload is detected. 7. SIG Green LED, detects input signal, illuminates above the threshold set at -70 dBu.
16 CONNECT ORS 9. Audio In F-XLR Active 20K Ohm Balanced, 10K Ohm Unbalanced. Pin 2 Hot (Positive voltage produces outward cone motion of L.F . Transducers). 10. Audio Out M-XLR Passive Audio Pass-through. Pin 2 Hot (Positive voltage produces outward cone motion of L.
The VRX918SP input panel features analog audio inputs and sophisticated onboard digital signal processing technology . Precision Bandpass limiting and automatic self-protection functions ensure maximum performance.
18 INDICA T ORS 6. PEAK Red LED, detects excessive input signal. The LED illuminates when overload at any point is detected. 7. SIG Green LED, detects input signal, illuminates above the threshold set at -70 dBu. 8. POWER Blue LED - located near voltage select switch, illuminates when AC power is applied and unit is ready for operation.
AMPLITUDE SHADING AMPLITUDE SHADING Amplitude shading is a technique that allows the coverage pattern of a loudspeaker array to be shaped by adjusting the relative acoustic output of some of the devices in the array . Most often, array shading involves only the mid and high-frequency sections of the array .
20 ARRA Y CONFIGURA TION SELECT OR (ACS) Below is an example of applying the ACS in a three-speaker array . In this particular configuration, the ACS on the top speaker is set at +3 dB, the middle speaker at 0 dB, and the bottom speaker -3 dB. VRX_Powered_UsersGuid#C77E6.
SECTION 6: DEPLO YING THE SY STEM The VRX932LAP/VRX918SP are flexible speaker systems that can be deployed in ground-supported or suspended applications. The following information will help you set up your VRX932LAP/VRX918SP system safely and effectively .
22 DUAL VRX932LAP Unlike most conventional speakers, the VRX932LAP is designed so that a pair of speakers may be safely mounted onto a pole or tripod stand.
Correct use of all rigging hardware is required for secure system suspension. Careful calculations should always be performed to ensure that all components are used within their Maximum Load Limit before the array is suspended. Never exceed the maximum recommended load ratings.
W ARNING: Do not use the older VRX932LA-AF array frame to suspend powered VRX932LAP or VRX918SP systems INST ALLING THE ARRA Y FRAME The array frame is attached to the internal rigging of the VRX900 system using the provided Quick Release Pins W ARNING: Do not use any substitute for these pins.
25 GROUND-ST ACKED , UPWARD FIRING ARRA YS Applications such as covering stadium bleachers from the playing field may be addressed by installing the array frames to the bottom of the array . Up to four VRX932LAP loudspeakers may be locked together and ground stacked using the VRX array frame kit, as shown.
26 SECTION 8 : INTRODUCTION T O THE VRX-AF The VRX-AF is an array frame designed to be used for suspension of the VRX932LAPand VRX918SP loudspeaker systems.
27 JBL W ARRANTY AND INFORMA TION MAILING ADDRESS: JBL Professional 8500 Balboa Blvd. Northridge, CA 91329 USA SHIPPING ADDRESS: JBL Professional 8370 Balboa Blvd.
JBL Professional 8500 Balboa Blvd. Northridge, CA 91329 USA Part Number: 364536-001 09/2007 VRX_Powered_UsersGuid#C77E6.qxp 9/21/07 5:05 PM Page 28.
An important point after buying a device JBL VRX-AF (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought JBL VRX-AF yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data JBL VRX-AF - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JBL VRX-AF you will learn all the available features of the product, as well as information on its operation. The information that you get JBL VRX-AF will certainly help you make a decision on the purchase.
If you already are a holder of JBL VRX-AF, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JBL VRX-AF.
However, one of the most important roles played by the user manual is to help in solving problems with JBL VRX-AF. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JBL VRX-AF along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
