Page 2 - Table of Contents; Determining EVA Array Configuration with EVADA
Electro-Voice® EVA Series User Manual Table of Contents Rigging-Safety Warning ....................................................................................................................................................31.0 Introduction ..........................................................
Page 3 - Rigging-Safety Warning
Electro-Voice® EVA 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-Voice EVA loudspeaker systems. It is intended to familiarize the reader with standard rigging hardwa...
Page 5 - bottom suspension for extreme down angles in large arrays.; Consult EVADA software; optional second spreader bars for the standard and extended
Electro-Voice® EVA 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 EVA-AM attenuation modules installed. All EVA modules contain ...
Page 7 - Listed below are the tools required to assemble an EVA array:; Designing an EVA Array; Applications for Which EVA Arrays Are Most Appropriate
Electro-Voice® EVA Series User Manual 7 2.0 Tool List Listed below are the tools required to assemble an EVA 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 att...
Page 8 - EVADA; Venue tab, where room information is entered
Electro-Voice® EVA Series User Manual 8 3.0 Designing an EVA Array (cont’) 3.3 Determining EVA Array Configuration with EVADA™ (EVA Design Assistant) Software EVADA™ is Excel-spreadsheet-based software for determining optimum array configurations for a given venue and trim heights. The latest versio...
Page 11 - Picture tab
Electro-Voice® EVA Series User Manual Figure 5: EVADA TM Picture tab 3.0 Designing an EVA Array (cont’) Figure 5 shows the Picture tab of the EVADA 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 Venue...
Page 12 - Report tab, with many physical array details
Electro-Voice® EVA Series User Manual 3.0 Designing an EVA Array (cont’) Figure 6 shows the Report tab of the EVADA 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 ...
Page 13 - The Notes tab is a place to enter comments on the particular design.
Electro-Voice® EVA Series User Manual 3.0 Designing an EVA Array (cont’) The Cable Loss tab allows the user to enter the combined impedance of an EVA array and the length and gauge (AWG) of the wire feeding it, in order to calculate the level lost (dB) in the cable feeding the array. See Figure 7. F...
Page 14 - Other Design Examples; A three-module EVA example of Figure 4, modified to improve the
Electro-Voice® EVA Series User Manual 14 3.0 Designing an EVA Array (cont’) 3.4 Other Design Examples 3.41 Dealing with the Relatively High Low-Frequency Variation 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 ...
Page 16 - A eight-module EVA example in a large theater with two balconies
Electro-Voice® EVA Series User Manual 16 3.0 Designing an EVA Array (cont’) Figure 10: A eight-module EVA 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 tha...
Page 17 - Preparing EVA Modules for Installation; Recommended Preflight Procedures; Unpack all loudspeakers in the shop.; Module Configuration
Electro-Voice® EVA Series User Manual 17 4.0 Preparing EVA 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...
Page 19 - EVA input panel removed, showing green PC board and the four bosses
Electro-Voice® EVA Series User Manual Figure 12: EVA input panel removed, showing green PC board and the four bosses to which the optional EVA-AM attenuation module will be attached Figure 13: EVA input panel with EVA-AM installed showing connector plug-in 4.0 Preparing EVA Modules for Installation ...
Page 20 - EVA Rigging System; Overview of the EVA Flying System; Typical EVA flying system
Electro-Voice® EVA Series User Manual 5.0 EVA Rigging System 5.1 Overview of the EVA Flying System The external rigging parts supplied with each EVA 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 s...
Page 21 - Deciding Which Grid Configuration to Use with an EVA Array; EVA-SG grid (down angle of the array is determined by
Electro-Voice® EVA Series User Manual 5.0 EVA Rigging System (cont’) While 80-90% of EVA applications will be accommodated with arrays of three or four modules. Up to eight EVA modules may be suspended together up to a combined maximum loudspeaker column weight of 720 lbs. 5.2 Deciding Which Grid Co...
Page 22 - EVA-SG standard grid with optional; Extended Grid with or without Second Spreader Bar
Electro-Voice® EVA Series User Manual 5.0 EVA Rigging System (cont’) A second spreader bar, EVA-GXB, is available. The second spreader bar is used when two front-to-back pickup points are desired/required. Figure 16 shows an EVA-SG grid with a second spreader bar. When two spreader bars are used, on...
Page 23 - Use of Two Standard Grids; For overall down angles of
Electro-Voice® EVA Series User Manual 23 5.0 EVA Rigging System (cont’) 5.23 Use of Two Standard Grids Two EVA-SG standard grids may also be used with an EVA 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...
Page 24 - Assembling and Flying an EVA Array; Fully tighten all eight M10 screws.
Electro-Voice® EVA Series User Manual 5.0 EVA Rigging System (cont’) 5.3 Assembling and Flying an EVA Array On each end of an EVA 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 EVA-SG standard grid or an EVA...
Page 25 - Rigging-Strength Ratings and Safety Factors; Working-Load Limit and Safety Factor Definitions
Electro-Voice® EVA 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 EVA rigging components and complete loudspeaker systems are based on test results in which parts were stressed to failur...
Page 26 - Structural Rating Overview; at any elevation (tilt) angle available
Electro-Voice® EVA 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. To make EVA systems both safe and easy to use, Electro-Voice en...
Page 27 - Simplified Structural-Rating Guidelines; Angled forces acting on rigging components and enclosures.
Electro-Voice® EVA 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 EVA loudspeakers are shown in Figure 19. These guidelines were determined based on the: 1. Vertical elevation p...
Page 28 - Never exceed; Do not use EVA-EG grids; EVA arrays (angle shown exaggerated for illustration purposes)
Electro-Voice® EVA Series User Manual 28 WHEN APPLYING THE STRUCTURAL RATING GUIDELINES TO ANY EVA LOUDSPEAKER SYSTEM SUSPENDED OVERHEAD, THE USER MUST OBEY THE FOLLOWING RULES: 1. Never exceed 720 lb (327 kg) total column weight of suspended loudspeakers, accesso- ries and cabling. (Typically 8 EVA...
Page 31 - Rigging Inspections and Precautions; Prior to each use, inspect the enclosures for any cracks,; Miscellaneous Mechanical Components:; Prior to each use, inspect all mechanical components
Electro-Voice® EVA Series User Manual 31 7.0 Rigging Inspections and Precautions Electro-Voice EVA 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 enclosu...
Page 34 - Notes