Garmin EVA-2082S/906, EVA-2082S/126, EVA-2082S/920 user manual Five-Module Array Example

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3.0 Designing an EVA 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 is within ±3 dB front to back. This desirable situation is helped by not only the 3-dB attenuation of the top module but also by the array being longer than the three-module examples above (4.4 ft versus 7.3 ft).

Figure 9:

A five-module EVA example whose three predicted frequencies not only track well

front-to-back, but also fall mostly within the desired ±3 dB

Electro-Voice® EVA Series User Manual

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Contents EVA-2082S/906 EVA-2082S/920 EVA-2082S/126 EVA-2082S/1220 Table of Contents Rigging-Safety Warning Introduction For proper grid selection Introduction cont’EVA-2082S/906 or EVA-2082S/126 dimensioned views Typical Number of Arrays Tool ListDesigning an EVA Array Applications for Which EVA Arrays Are Most AppropriateDesigning an EVA Array cont’ Designing an EVA Array cont’ Designing an EVA Array cont’ Evadatm Picture tab Evadatm Report tab, with many physical array details Designing an EVA Array cont’ Designing an EVA Array cont’ Five-Module Array Example An Eight-Module Example Preparing EVA Modules for Installation Recommended Preflight ProceduresModule Configuration Preparing EVA Modules for Installation cont’ Preparing EVA Modules for Installation cont’ Overview of the EVA Flying System EVA Rigging SystemEVA Rigging System cont’ Extended Grid with or without Second Spreader Bar Use of Two Standard Grids Assembling and Flying an EVA Array Working-Load Limit and Safety Factor Definitions Rigging-Strength Ratings and Safety FactorsStructural Rating Overview Rigging-Strength Ratings and Safety Factors cont’Simplified Structural-Rating Guidelines Rigging-Strength Ratings and Safety Factors cont’ Rigging-Strength Ratings and Safety Factors cont’ Electro-Voice Structural-Analysis Procedures Rigging Inspections and Precautions References Rigging printedMechanical Engineering printed Rigging Web sites References cont’Page Page Electro-Voice