Page 2 - Table of Contents
Electro-Voice EVF/EVH User Manual Table of Contents Rigging-Safety Warning ........................................................................................................................................................................................... 3 1.0 Introduction .....................
Page 3 - Rigging-Safety Warning
Electro-Voice EVF/EVH 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 EVF and EVH loudspeaker systems. It is intended to familiarize the reader with standard rigging ha...
Page 4 - EVF; The; pression driver for the ND2B medium-format driver.
Electro-Voice EVF/EVH User Manual 1.0 Introduction The Electro-Voice EVF series is a group of compact two-way front-loaded full-range systems, available with 12- or 15-inch woofers, augmented by low-frequency and subwoofer systems. EVF full-range sys- tems are available in two versions. The “S” vers...
Page 8 - Key suspension point dimensions as shown in figure above
Electro-Voice EVF/EVH User Manual 1.0 Introduction (cont’) Figure 1h: Key suspension point dimensions for EVF or EVH loudspeakers as indicated in table below Figure 1g: Key dimensions for washers and eyebolts included with each loudspeaker Washer (x4) Eyebolt (x4) End View Side View Rear View Table ...
Page 9 - Finishes and Colors Available
Electro-Voice EVF/EVH User Manual 1.0 Introduction (cont’) 1.1 Finishes and Colors Available The standard EVF/EVH indoor versions are finished in tough EVCoat™. In addition, all models are available in two levels of weather resistance, indicated by letters following the coverage-pattern numbers. The...
Page 10 - Accessories for EVF and EVH Systems; this cover is supplied with the weather-resistant versions.
Electro-Voice EVF/EVH User Manual 2.0 Tool List Listed below are the tools required to prepare EVF and EVH systems for installation: 1. 3/16-inch flat-blade screwdriver (for attaching signal wires to input-panel connectors). 2. Phillips #2 screwdriver (for grille removal to rotate waveguides, remova...
Page 11 - General Aiming and Placement Guidelines; distance from it doubles, according to the formula:; Directivity Break Frequency Defined; ) and is inversely proportional to
Electro-Voice EVF/EVH User Manual 3.0 Designing an EVF/EVH Cluster 3.1 General Aiming and Placement Guidelines Loudspeakers should be “pointed at the people” and away from reflective room surfaces. Since people are excellent absorbers of sound and room surfaces are often not, this practice insures n...
Page 12 - also “blasting out” the front rows.
Electro-Voice EVF/EVH User Manual 3.0 Designing an EVF/EVH Cluster (cont’) 3.3 More on Coverage Patterns, Multiple Coverage Patterns, the Need for Clusters of Loud- speakers and How Far a Single Cluster Can “Reach” into a Venue The coverage patterns or angles mentioned previously are defined where l...
Page 14 - Multiple-Source Interference in Clusters; Directivity Break Frequency Defined, above.
Electro-Voice EVF/EVH User Manual 14 3.5 Multiple-Source Interference in Clusters Whenever two or more sources serve a single venue, some seats will receive strong signals from multiple sources. Consider two EVF-1122S/64 60° x 40° systems clustered side by side with their axes 60° apart to form a 12...
Page 15 - about 20° on either side of the cluster axis.; NORMALIZED
Electro-Voice EVF/EVH User Manual 15 Figure 5: Typical response off the array axis of the two loudspeakers shown in Figure 4, showing cancellations due to arrival-time differences This effect is shown in the frequency-response of Figure 5. Given the dimensions of the typical compact loudspeaker syst...
Page 16 - nates their audibility. Figure 7 shows this effect at 8,000 Hz.; Reducing Multiple-Source Interference
Electro-Voice EVF/EVH User Manual 16 At higher frequencies, the interference patterns become more densely packed, which essentially elimi- nates their audibility. Figure 7 shows this effect at 8,000 Hz. 3.51 Reducing Multiple-Source Interference Multiple-source interference cannot be eliminated but ...
Page 17 - by separating them with a subwoofer (see text for more details)
Electro-Voice EVF/EVH User Manual 17 One clustering technique that accomplishes this separation without putting a physical space between two full-range systems is putting a low-frequency or subwoofer system between two full-range systems. Such a cluster is shown in Figure 9, assembled with the optio...
Page 19 - Preparing EVF and EVH Systems for Installation; Recommended Preflight Procedures; Unpack all loudspeakers in the shop.; Passive/Biamp Crossover Configuration; tated 90° with respect to the EVF view of Figure 11.)
Electro-Voice EVF/EVH User Manual 19 4.0 Preparing EVF and EVH Systems 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 p...
Page 21 - Digital Signal Processing; range due to the effects of having a sealed enclosure.
Electro-Voice EVF/EVH User Manual 21 4.0 Preparing EVF and EVH Systems for Installation (cont’) Figure 12: An EVH hard foam waveguide contour being removed for reorientation 4.5 Digital Signal Processing 4.51 Full-Range Systems in Passive Mode For full-range systems in the passive mode, the internal...
Page 22 - Operate on a Single Power-Amplifier Channel
Electro-Voice EVF/EVH User Manual 22 4.0 Preparing EVF and EVH Systems for Installation (cont’) 4.52 Using the EVF-1121S and EVF-1151S Low-Frequency Systems in Full-Range Clusters that Operate on a Single Power-Amplifier Channel The EVF-1121S and EVF-1151S low-frequency systems have integral passive...
Page 23 - EVF and EVH Rigging System
Electro-Voice EVF/EVH User Manual 23 5.0 EVF and EVH Rigging System 5.1 Introduction 5.11 The Flying EV-Innovation (EV-I) Loudspeaker System All EVH and EVF loudspeaker systems incorporate heavy-duty M10-1.5 threaded attachment points on each enclosure. These attachment points work in conjunction wi...
Page 26 - Important Details that Apply to the VRK and HRK Rigging Kits; of the appropriate arrow direction and letter.
Electro-Voice EVF/EVH User Manual 26 5.12 Important Details that Apply to the VRK and HRK Rigging Kits Both the VRK and HRK kits include all necessary mounting hardware (as shown in Figures 14 and 15). Additionally, the VRK kits include a set of low-profile stabilizer bars to both simplify alignment...
Page 27 - IN ORDER TO SUSPEND A SySTEM OR CLUSTER FROM THE TOP.
Electro-Voice EVF/EVH User Manual 27 5.21 Anatomy of an EVF or EVH Flying System Using M10 Eyebolts 5.211 Eyebolt Application Warnings NO EyEBOLT SHOULD BE MOUNTED IN THE SIDES OF ANy EVF OR EVH ENCLOSURE IN ORDER TO SUSPEND A SySTEM OR CLUSTER FROM THE TOP. 5.0 EVF and EVH Rigging System (cont’) Fi...
Page 29 - A MAXIMUM OF TWO ENCLOSURES IS ALLOWED WITH ALL-EyEBOLT CLUSTERS.
Electro-Voice EVF/EVH User Manual 29 5.213 All-Eyebolt Clusters A basic two-cabinet flying system is shown in Figures 19 and 20, illustrating the components necessary to make a typical two-system horizontal or vertical cluster using M10 eyebolts. Secure cabinets to the building structure with user-s...
Page 31 - VRK Kits and Vertically Rigged Clusters; construct this cluster:
Electro-Voice EVF/EVH User Manual 31 Figure 21a: Basic three-enclosure vertical hang of an EVF subwoofer on top and two EVF full-range systems below, using one each VRK-1 and VRK-2 kits (optional acces- sories) and four eyebolts (supplied with systems), using a moderate trim angle 5.0 EVF and EVH Ri...
Page 32 - HRK Kits and Horizontally Rigged Clusters; of the rigging plate. Tie plates are identified in Figure 22.
Electro-Voice EVF/EVH User Manual 32 5.0 EVF and EVH Rigging System (cont’) 5.23 HRK Kits and Horizontally Rigged Clusters The main difference between the HRK and the VRK rigging kits is the addition of a tie plate in the center of the rigging plate. Tie plates are identified in Figure 22. MAIN SUSP...
Page 35 - Assembly Instructions for VRK and HRK kits; ready to attach the VRK kits to the loudspeakers.
Electro-Voice EVF/EVH User Manual 35 5.0 EVF and EVH Rigging System (cont’) 5.24 Assembly Instructions for VRK and HRK kits Both the VRK and HRK rigging kits share the same mounting hole positions and letter designations. Tables 5, 6, and 7 apply to both the VRK and HRK kits. The only difference bet...
Page 37 - Rigging-Strength Ratings and Safety Factors; Working Load Limit and Safety-Factor Definitions; applied to a mechanical component or system.; CAUTIONS for Working Load Limits and Safety Factors; safety factor be maintained for the EVF and EVH loudspeakers.
Electro-Voice EVF/EVH User Manual 37 6.0 Rigging-Strength Ratings and Safety Factors 6.1 Working Load Limit and Safety-Factor Definitions The structural ratings for all of the EVF and EVH rigging components and complete loudspeaker sys- tems are based on test results in which parts were stressed to ...
Page 38 - Structural Rating Overview; so that the cluster maintains an 8:1 safety factor.
Electro-Voice EVF/EVH User Manual 38 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.2 Structural Rating Overview Designing a safe structural cluster is usually a very complex process best left to experienced profession- als. Since the EVH and EVF rigging options allow the user to configur...
Page 39 - LIMITS FOR ALL-EYEBOLT CLUSTERS ONLY; Limitations for vertical all-eyebolt clusters
Electro-Voice EVF/EVH User Manual 39 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.3 All-Eyebolt Structural Ratings The guidelines for simplified all-eyebolt structural ratings cover the following information: 1. Maximum number of enclosures. 2. Maximum weight of the cluster. 3. WLL for ...
Page 40 - Working Load Limits for Eyebolts; main suspension lines.
Electro-Voice EVF/EVH User Manual 0 50 100 150 200 250 300 350 400 450 500 550 600 650 0 10 20 30 40 50 60 70 80 90 Angle (Degrees) Working Load Limit (lb) 0 23 45 68 91 113 136 159 181 204 227 249 272 295 Working Load Limit (kg) 575 lb (261 kg) @ 0° 262 lb (119 kg) @ 30° 185 lb (84 kg) @ 60° 171 lb...
Page 42 - VRK Rigging Structural Ratings for Vertical Clusters; Maximum length of the cluster.
Electro-Voice EVF/EVH User Manual 42 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.4 VRK Rigging Structural Ratings for Vertical Clusters The guidelines for simplified vertical structural ratings cover the following information: 1. Maximum length of the cluster. 2. Maximum weight of the ...
Page 43 - VERTICAL CLUSTERS ARE LISTED IN TABLE 10.; LIMITS FOR VERTICAL CLUSTERS ONLY
Electro-Voice EVF/EVH User Manual 43 6.0 Rigging-Strength Ratings and Safety Factors (cont’) THE MAXIMUM LOAD, MAXIMUM LENGTH AND EyEBOLT ANGLE RESTRICTIONS FOR VERTICAL CLUSTERS ARE LISTED IN TABLE 10. Table 10: Maximum load, maximum length and eyebolt angle restrictions for vertical clusters LIMIT...
Page 46 - HRK Rigging Structural Ratings for Horizontal Clusters; Maximum load and maximum height for horizontal clusters; LIMITS FOR HORIZONTAL CLUSTERS ONLY
Electro-Voice EVF/EVH User Manual 46 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.5 HRK Rigging Structural Ratings for Horizontal Clusters The guidelines for simplified horizontal structural ratings cover the following information: 1. Maximum height of the cluster. 2. Maximum weight of ...
Page 47 - Using Tie Plates as Main Load-Bearing Suspension; moderate trim angle as shown in Figure 31.
Electro-Voice EVF/EVH User Manual 47 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.51 Using Tie Plates as Main Load-Bearing Suspension Horizontal clusters are attached to the structure with the tie plates located on the rigging plates of the HRK kits. The tie plates have six holes that w...
Page 49 - Symmetry for Horizontal Clusters using HRK Kits; horizontal cluster using HRK horizontal
Electro-Voice EVF/EVH User Manual 49 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.53 Symmetry for Horizontal Clusters using HRK Kits The cluster’s center of gravity is centered under the two suspension points in a two-over-two cluster (see Figure 33a) or between the suspension points in...
Page 50 - Inner Connection Points; Box-to-Box internal connection points of a
Electro-Voice EVF/EVH User Manual 50 6.0 Rigging-Strength Ratings and Safety Factors (cont’) 6.54 Inner Connection Points For connection between the clusters (from bottom of top enclosure to the top of the bottom enclosure), both the front and rear rigging plates must be connected (see Figure 34). T...
Page 51 - Ratings for Outdoor Applications with Wind Loading; STRUCTURAL ENGINEER WHEN WINDS ARE ANTICIPATED.
Electro-Voice EVF/EVH User Manual 51 6.6 Ratings for Outdoor Applications with Wind Loading Special considerations must be made for outdoor venues where wind conditions could become a con- cern. High wind gusts can push the loudspeakers in a way that the suspension lines’ direction of force can beco...
Page 52 - Rigging Inspections and Precautions; Electro-Voice EVF and EVH Loudspeaker Systems:; Prior to each use, inspect the enclosures for any; Miscellaneous Mechanical Components:; Prior to each use, inspect all mechanical components
Electro-Voice EVF/EVH User Manual 52 7.0 Rigging Inspections and Precautions Electro-Voice EVF and EVH 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 rigging plates, tie pl...
Page 54 - Notes
