Manuel d'utilisation / d'entretien du produit VRX918SP du fabricant JBL
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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.
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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.
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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.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté JBL VRX918SP c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du JBL VRX918SP - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation JBL VRX918SP, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le JBL VRX918SP va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le JBL VRX918SP, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du JBL VRX918SP.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le JBL VRX918SP. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei JBL VRX918SP ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
