Electro-Voice EVA-2082S/126 manuale d’uso

Electro-V oice® EV A Series User Manual EV A Series User Manual EV A-2082S/906 EV A-2082S/920 EV A-2082S/126 EV A-2082S/1220[...]

Electro-V oice® EV A Series User Manual T able of Contents Rigging-Safety W arning .................................................................................................................................................... 3 1.0 Introduction ..................................................................................................[...]

Electro-V oice® EV A Series User Manual Rigging-Safety Warning 3 This document details general rigging practices appropriate to the entertainment industry , as they would apply to the rigging of Electro-V oice EV A loudspeaker systems. It is intended to familiarize the reader with standard rigging hardware and techniques for suspending EV A loudsp[...]

Electro-V oice® EV A Series User Manual 1.0 Introduction The Electro-V oice® EV A (Expandable V ertical Array) loudspeaker systems or line-array modules represent an important step in line-array technology for small- and medium-scale fixed-installation sound reinforce- ment. The four models are designed to significantly simplify the physical asse[...]

Electro-V oice® EV A Series User Manual 5 1.0 Introduction (cont’) Up to eight paralleled modules can be driven from a single amplifier channel capable of driving a 2.3-ohm nominal impedance if at least two of the modules have the optional EV A-AM attenuation modules installed. All EV A modules contain two vertically stacked EVS2008 8-inch (203 [...]

Electro-V oice® EV A Series User Manual 6 1.0 Introduction (cont’) Figure 1a: EV A-2082S/906 or EV A-2082S/126 dimensioned views Figure 1b: EV A-2082S/920 or EV A-2082S/1220 dimensioned views Bottom View Front View T op View Left View Right View Rear View Spreader Bar Attach Holes Bottom View Front View T op View Left View Right View Rear View S[...]

Electro-V oice® EV A Series User Manual 7 2.0 T ool List Listed below are the tools required to assemble an EV A array: 1. Phillips #2 screwdriver (for attaching cosmetic end panels) . 2. 6-mm Allen (hex) wrench (for attaching tie plates and assembling grids) . 3. 3/16-inch flat-blade screwdriver (for attaching signal wires to input-panel connecto[...]

Electro-V oice® EV A Series User Manual 8 3.0 Designing an EV A Array (cont’) 3.3 Determining EV A Array Configuration with EV ADA™ (EV A Design Assistant) Software EV ADA™ is Excel-spreadsheet-based software for determining optimum array configurations for a given venue and trim heights. The latest version of EV ADA is downloadable from the[...]

Electro-V oice® EV A Series User Manual 9 3.0 Designing an EV A Array (cont’) Figure 4 shows the EV ADA Main tab, where the array is built and its performance evaluated in the three frequency bands mentioned above. This tab is full of information and things to enter: 1. In the top middle of the view is where the number of suspension points (one [...]

Electro-V oice® EV A Series User Manual 10 3.0 Designing an EV A Array (cont’) Producing the most uniform front-to-back coverage is an iterative process. In general, it will be found that: 1. The top-most module will be aimed above the last-row heads. This may appear to aim ar- ray output at the back wall, which if reflective could produce audib[...]

Electro-V oice® EV A Series User Manual Figure 5: EV ADA TM Picture tab 3.0 Designing an EV A Array (cont’) Figure 5 shows the Picture tab of the EV ADA spreadsheet, with a side view of the array and its suspen- sion. The array is drawn to scale, in feet or meters as selected in the Units tab on the V enue page (English or metric, respectively) [...]

Electro-V oice® EV A Series User Manual 3.0 Designing an EV A Array (cont’) Figure 6 shows the Report tab of the EV ADA spreadsheet, showing such details as hang points (in this example, pinholes 18 and 0 on the extended grid) , type of hang point (main or pullback) , load (lb) , mod- ules in the array and their vertical aiming angles (note that[...]

Electro-V oice® EV A Series User Manual 3.0 Designing an EV A Array (cont’) The Cable Loss tab allows the user to enter the combined impedance of an EV A array and the length and gauge (A WG) of the wire feeding it, in order to calculate the level lost (dB) in the cable feeding the array . See Figure 7. Figure 7: EV ADA TM Cable Loss tab, calcul[...]

Electro-V oice® EV A Series User Manual 14 3.0 Designing an EV A Array (cont’) 3.4 Other Design Examples 3.41 Dealing with the Relatively High Low-Frequency V ariation of Short Arrays The example of Figure 4 is a three-module array addressing a flat floor from a trim height of 23 ft, with the first row 10 ft away from the array and the last row [...]

Electro-V oice® EV A Series User Manual 15 3.0 Designing an EV A Array (cont’) 3.42 A Five-Module Array Example Figure 9 shows another, five-module array in an 80-ft-deep venue with the front row five ft from the ar- ray and whose floor begins to rise about halfway back. The three frequencies not only track very well but nearly all of the venue [...]

Electro-V oice® EV A Series User Manual 16 3.0 Designing an EV A Array (cont’) Figure 10: A eight-module EV A example in a large theater with two balconies (see text above for more details) 3.43 An Eight-Module Example Figure 10 shows an eight-module array in a large theater with two balconies. Note that this array cannot be driven from one ampl[...]

Electro-V oice® EV A Series User Manual 17 4.0 Preparing EV A Modules for Installation 4.1 Recommended Preflight Procedures For any installed sound system, certain checks made at the installer’s place of business can prevent ex- pensive on-site delays. A short-list follows, and sets the stage for proper array performance: 1. Unpack all loudspeak[...]

Electro-V oice® EV A Series User Manual 4.0 Preparing EV A Modules for Installation (cont’) T o attenuate the top HF element, remove the switch card by drawing it toward you using the central finger hole. (The switch can also be removed with the end of a flat-blade screwdriver, by placing the blade end in the switch hole and using the adjacent e[...]

Electro-V oice® EV A Series User Manual Figure 12: EV A input panel removed, showing green PC board and the four bosses to which the optional EV A-AM attenuation module will be attached Figure 13: EV A input panel with EV A-AM installed showing connector plug-in 4.0 Preparing EV A Modules for Installation (cont’) 19[...]

Electro-V oice® EV A Series User Manual 5.0 EV A Rigging System 5.1 Overview of the EV A Flying System The external rigging parts supplied with each EV A line-array module attach to metal parts internal to each module, so that a finished array places no stress on the wooden enclosure parts. The rigging simplification inherent in the EV A modules i[...]

Electro-V oice® EV A Series User Manual 5.0 EV A Rigging System (cont’) While 80-90% of EV A applications will be accommodated with arrays of three or four modules. Up to eight EV A modules may be suspended together up to a combined maximum loudspeaker column weight of 720 lbs. 5.2 Deciding Which Grid Configuration to Use with an EV A Array 5.21[...]

Electro-V oice® EV A Series User Manual 5.0 EV A Rigging System (cont’) A second spreader bar, EV A-GXB, is available. The second spreader bar is used when two front-to-back pickup points are desired/required. Figure 16 shows an EV A-SG grid with a second spreader bar. When two spreader bars are used, one is attached to the extreme front hole po[...]

Electro-V oice® EV A Series User Manual 23 5.0 EV A Rigging System (cont’) 5.23 Use of T wo Standard Grids T wo EV A-SG standard grids may also be used with an EV A array , one attached to the upper module and the other attached to the lower module, acting as a pull-up grid. This is a way to achieve extreme down angles, such as might be encounte[...]

Electro-V oice® EV A Series User Manual 5.0 EV A Rigging System (cont’) 5.3 Assembling and Flying an EV A Array On each end of an EV A module are a pair of upper and lower connection points that accept the supplied M10 flathead bolts to either (1) attach the side arms of an EV A-SG standard grid or an EV A-EG extended grid to the top of the uppe[...]

Electro-V oice® EV A Series User Manual 25 6.0 Rigging-Strength Ratings and Safety Factors 6.1 Working-Load Limit and Safety Factor Definitions The structural ratings for all of the EV A rigging components and complete loudspeaker systems are based on test results in which parts were stressed to failure. Manufacturers typically present the structu[...]

Electro-V oice® EV A Series User Manual 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.2 Structural Rating Overview Designing a safe structural array is ordinarily a very complex process best left to experienced profession- als. T o make EV A systems both safe and easy to use, Electro-V oice engineers have chosen to treat EV A arrays [...]

Electro-V oice® EV A Series User Manual 27 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.3 Simplified Structural-Rating Guidelines The simplified structural-rating guidelines for EV A loudspeakers are shown in Figure 19. These guidelines were determined based on the: 1. V ertical elevation possible with EV A-SG and EV A-EG grids. 2. [...]

Electro-V oice® EV A Series User Manual 28 WHEN APPL YING THE STRUCTURAL RA TING GUIDELINES T O ANY EV A L OUDSPEAKER S Y STEM SUSPENDED OVERHEAD, THE USER MUST OBEY THE FOLL OWING RULES: 1. Never exceed 720 lb (327 kg) total column weight of suspended loudspeakers, accesso- ries and cabling. (T ypically 8 EV A 2082S modules) 2. If a second grid i[...]

Electro-V oice® EV A Series User Manual 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 29 Figure 21: Side-to-side angular pull structural-rating guidelines for EV A spreader bars Figure 22: Front-to-back angular pull structural-rating guidelines for EV A spreader bars[...]

Electro-V oice® EV A Series User Manual 30 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.4 Electro-V oice Structural-Analysis Procedures Electro-V oice maintains a structural pull-test facility in Burnsville, Minnesota USA which includes load cells with digital-electronic display and recording. The load cells are calibrated annually [...]

Electro-V oice® EV A Series User Manual 31 7.0 Rigging Inspections and Precautions Electro-V oice EV A Loudspeaker Systems: Prior to each use, inspect the enclosures for any cracks, deformations or missing or damaged components that could reduce enclosure strength. Inspect the tie plates between enclosures for cracks, corrosion or other deformatio[...]

Electro-V oice® EV A Series User Manual 32 8.0 References 8.1 Rigging (printed) [1] W .E. Rossnagel, L.R. Higgins & J.A . MacDonald, Handbook of Rigging for Construction and Industrial Operations, McGraw-Hill Book Company , New Y ork, NY , USA (1988) . [2] H. Donovan, Entertainment Rigging, http://www .riggingbooksandprograms.com, Rigging Semi[...]

Electro-V oice® EV A Series User Manual 33 8.0 References (cont’) 8.3 Rigging (Web sites) [1] http://www .rigging.net [2] http://www .cmworks.com/ [3] http://catalog.thecrosbygroup.com/maininterface.htm[...]

Electro-V oice® EV A Series User Manual 34 Notes[...]

Electro-V oice® EV A Series User Manual 35 Notes[...]

Electro-V oice® EV A Series User Manual 12000 Portland Avenue South, Burnsville, MN 55337 Phone: 952/884-4051, Fax: 952/884-0043 w w w .electrovoice.com © Bosch Communications Systems 12/2008 Part Number LIT000350 Rev 1 U.S.A. and Canada only. For customer orders, contact Customer Service at: 800/392-3497 Fax: 800/955-6831 Europe, Africa, and Mid[...]