User manual ELECTRO-VOICE 15BX

[. . . ] The rear rigging consists of four pieces of track that run side to side. Two pieces of track are at the top and two pieces are at the bottom. Special hinges are installed into these tracks to attach one enclosure to another. Internal to the enclosure are four aluminum bars that run top to bottom between the rigging tracks to minimize the stress on the wooden enclosures. [. . . ] At the front of the X-Line enclosures are two aluminum extrusions with tracks that run top to bottom. Rigging straps may be attached at different positions along the track, effective adjusting the space between enclosures at the front. External Rigging Hardware The X-Line loudspeaker systems utilize separate pieces of rigging hardware, shown in Figure 2, to link one enclosure to another or to attach the top enclosure to the grid. To attach one enclosure to another, two Xvhl linking hinges are used at the back and two Xvsl linking straps are used at the front. The Xvhl linking hinges are solid hinges that allow the enclosures to hinge at their adjacent rear corners. The Xvsl linking straps consist of two special fittings connected by a chain. The fittings on the linking straps can be installed at different positions along the enclosure front rigging track. By attaching at different positions, the amount of space between the enclosures can be adjusted in 1° increments. The Xvhg grid hinges are flexible hinges that secure the rear of the top enclosure to the grid. When used with the "A-A" length, even-numbered angles result (0°, 2°, 4°, 6°, etc. ) when changing the attachment position of the linking strap along the track, while odd-numbered angles result (1°, 3°, 5°, 7°, etc. ) when used with the "B-B" length. When planning angle adjustments between boxes, the shape of the enclosure must be taken into account. Two rectangular enclosures (either Xvls or Xsub) can be pulled up tight with their sides parallel, a 0° relative angle between the enclosures (i. e. , both are facing straight ahead). When two trapezoidal enclosures (Xvlt only) are pulled up tight with their sides parallel, a 5° relative angle exists between the enclosures (because the enclosure shape is a 5° wedge). When a trapezoidal enclosure (Xvlt) and rectangular enclosure (either Xvls or Xsub) are pulled up tight with their sides parallel, a 3° relative angle exists between the enclosures. To facilitate array design, Table 1 shows all of the possible combinations of rigging attachment locations and linking strap lengths. Rigging an Array Using Boxes with Bottom Dollies Two dollies are available for transporting the X-Line loudspeaker systems. The actual array rigging technique will vary depending on which dolly is used. A "Bottom Dolly" can be used with the rectangular loudspeaker enclosures (either Xvls or Xsub). [. . . ] The actual array rigging technique will vary depending on which dolly is used. A "Bottom Dolly" can be used with the rectangular loudspeaker enclosures (either Xvls or Xsub). Up to four loudspeaker systems can be stacked on top of a single bottom dolly. The loudspeakers all are sitting upright, just like they would be arrayed. [. . . ]