JBL VRX-AF manuale d’uso

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. Before Y ou Begin 7 Section 3. Introduction to The VRX932LAP 8 Section 4. Introduction to The [...]

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. Install in accordance with the manufacturer's instructions. 8. Do not install near any heat [...]

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. NO USER SERVICEABLE P AR TS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. W A TCH FOR THESE SYMBOLS The lightning bolt triangle is used to alert the user to the risk of electr[...]

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 Professional Use, Part 1: Emissions EN 55103-1:1997 Magnetic Field Emissions-Annex A @ 10 cm and 1 M EN 55022:2003 Limits and Methods of Measurement of R[...]

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. Keep loudspeakers out of extended or intense direct sunli[...]

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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: 100º x 15º nominal Maximum Peak Output, SPL 1 136 dB SPL at 1m LF Driver: 1 x JBL 2262FF 305 mm (12 in) dual voice coil Differential Drive ® woof[...]

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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 mm (18 in) dual voice coil Differential Drive ® woofer with neodymium-magnet Bandpass Nominal Impedance: LF: 2 x 2 ohms DPC-2 Internal Amplification [...]

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 technology to a combination of comprehensive digital signal processing and advanced amplifier technology , perfectly matched to the enclosures to deliver s[...]

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. The system requires appropriate AC power . CAUTION: In compliance with safety agency criteria and proper system operation, it is critical that the sys- tem installer obser[...]

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. Before you set up your VRX900 Powered series speaker for[...]

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. 8. POWER Blue LED - located near voltage select switch, illuminates when AC power is applied and [...]

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.F . T ransducers). 1 1. AC LINE INPUT Blue Neutrik PowerCon ® NAC3MP A A-type air[...]

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. CONTROLS 1. AUDIO OUT T wo-position push-button DSP preset selection switch, enables an 80Hz Hi-Pass filter (graph 1) or direct loop th[...]

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. CONNECT ORS[...]

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 . In a simple system consisting of three VR[...]

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.qxp 9/21/07 5:05 PM Page 20[...]

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 . POLE AND TRIPOD SAFETY WARNINGS! When using stands or poles, be sure to observe the following[...]

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. For most applications, the forward socket of the dual angle pole socket will be used. This will tilt the lower of the two speakers at a 15° down-angle (providing coverage of the near listeners[...]

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. Prior to suspending the system, an expert, trained and experienced in f[...]

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. 1. Begin by attaching the two side arms (A) to either [...]

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. W ARNING: Do not ground stack more than fo[...]

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. The optional array frame kit includes the following items: • 1 x center frame • 2 x side arms • 4 x quick release pins • 2 x drop levers • 2 x 3/8" shackles WORKING LOAD LIMIT Th[...]

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., Dock D Northridge, CA 91329 USA (Do not return product to this address without first obtaining prior authorization from JBL) CUST OMER SERVICE: Monday through Friday 8:00am - 5:00pm Pac[...]

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[...]