User manual ELECTRO-VOICE X-ARRAY INSTALL XI FLYING MANUAL

[. . . ] THE X-ARRAYTM INSTALL SYSTEM X-Array InstallTM - Xi LOUDSPEAKER SYSTEM FLYING MANUAL TABLE OF CONTENTS I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. 1 The Flying Xi Loudspeaker Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BASIC XI RIGGING PRIMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] There are a number of attachment points allowing for a wide variety of angles. Although the center of gravity is slightly different for each of the systems, the balancing concept is the same. The further the top attachment point is towards the back of the cabinet, the greater the downward angle, as shown in Figure 2. 5. As the attachment point is moved forward, the cabinet will have less downward angle and, at the furthest point forward, will have an upward tilt. This principle holds true when hanging any of the Xi systems in either rigging orientation (rigging track on the top and bottom, or on the sides). X-Array InstallTM Loudspeaker Systems Flying Manual Figure 2. 5--Balancing the Xi Loudspeaker Systems Figure 2. 5a--Rigging Hardware on the Top and Bottom of the Enclosures Figure 2. 6--Interaction Between Flown Cabinets Figure 2. 6a--Adding a Bottom Cabinet Affects the Top Cabinet Figure 2. 5b--Rigging Hardware on the Sides of the Enclosures Figure 2. 6b--After Readjusting the Top Cabinet Vertical arrays are constructed by hanging Xi systems from one another in succession. Both the curvature of the array and the angles of the individual cabinets are controlled by the rigging attachment positions. The shape of the array curve is determined by the position on the lower track of an already hanging cabinet from which the next cabinet is hung, the further back the attachment point is on the upper box, the further back the lower cabinet is shifted and, hence, the greater the curvature of the array. The goal is to have the back, top and bottom edges to adjacent cabinets in alignment. Hanging one cabinet from another affects the angle of the first. This is best demonstrated in an example. In Figure 2. 6a, one Xi enclosure is hung so that it points straight ahead and a second is added below. The addition of the second enclosure causes the top cabinet to point upward. Shifting the upper attachment point of the first cabinet back, as shown in Figure 2. 6b, counteracts the additional load and results in the upper cabinet pointing straight ahead again. Note that this change has no affect on the angle of the lower cabinet. Additional Xi enclosures may be hung in succession in this fashion, creating a tall vertical line array (as long as the working-loadlimit of all of the mechanical components are not exceeded and a sufficient safety factor is maintained throughout the array). With the Xi loudspeaker systems oriented with the rigging track on the top and bottom of the cabinets, a short rigging strap is used between the cabinets to minimize the spacing between the systems. Typically, the LS-3B is used for this task. If, however, Xi enclosures having different dimensions are hung 8 from one another (an Xi-1122 suspended beneath an Xi-1191, for example), a longer strap would be required to accommodate the different distances In width between the rigging tracks. In this instance, the LS-1 B could be employed. Another option would be to use two RS-1B double-stud swivel-ring fittings linked with a threaded-chain connector or a carabiner snap hook. (The RS-2B single-stud-ring fittings could be used in lighter-weight applications. ) With the Xi loudspeaker systems oriented with the rigging track on the sides at the cabinets, a longer rigging strap is required between the cabinets to minimize the spacing between the systems. Typically, the LS-1B is used for this task. [. . . ] Custom Rigging Strap Assemblies: Custom wirerope or webbing rigging strap assemblies that use the New Haven NH32102-2 and NH8192-2S fittings may be ordered. Sound Manufacturing, Inc. , 3336 Primera Ave. , Hollywood, CA 90068, USA, 213-850-5042. General Rigging Supplies: A wide variety of standard and specialty rigging hardware components for both touring and permanent-installation applications is available. Sound Manufacturing, Inc. , 3336 Primera Ave. , Hollywood, CA 90068 USA, 213-850-5042 or ATM Fly-wareTM, 2100 S. [. . . ]