Button Bar Knob
Front Rigging Tube
Hole in Rigging Tube for Locking Button
ELECTRO-VOICE®
Front Button Bar
Specifically, this means that when the enclosures are suspended, the back of the bottom enclosure will rotate down until the pin is stopped at the end of the slot in the swing arm. This one pin will not prevent the back corners of the enclosures from coming together. When landed, the enclosures will compress together until their back corners touch. The enclosures can be locked apart by inserting a second quick-release pin in the rear rigging holes directly above the first pin at the end of the swing arm as shown in Figure 5. With a second pin, the swing arm becomes immobile and the array becomes rigid so that when it is landed, the enclosures are locked at the selected angles.
Two quick-release pins on lanyards are attached to the rear rigging frame for pinning the swing arm. An XLC system can often be flown using only a single pin - the one that passes through the slot in the swing arm. The choice of whether to add the second pin is left to the user. This decision is often based on personal preferences regarding the technique of transferring the enclosures from the array to dollies for transport in touring applications. In some situations, however, the second pin is required. Two pins must always be used whenever a pull back is necessary to tilt the entire array downward more than gravity will allow. If a second pin is not used, the shape of the array will change as the pull back is applied. Another example where a second pin is required is when an array with a large vertical arc is created. Gravity may not allow all the enclosures to be angled apart as much as necessary. In this case, the second pin is necessary to hold the enclosures apart to achieve the desired array shape. If the user decides not to use the second pin to hold enclosures apart at the rear, the pin should be installed in the swing-arm transport hole to prevent it from dangling and catching on something or getting in the way. Using this hole, the swing arm may be pivoted down into the rigging slot on the frame and pinned into its fully retracted position for transport.
Rear Swing Arm
Quick-Release Pins to | | Top Spring-Loaded |
| Locking Button |
Lock Swing Arm in Rear | |
Swing-Arm Slot | |
Rigging Slot | |
| Bottom Spring- |
| |
| XLC Enclosure | Loaded Locking |
| Button |
| |
Swing-Arm | | |
Transport Hole | | Hole in Rigging |
| |
| | Tube for Locking |
| | Button |
Rear Rigging Slot | | |
Holes in Rigging Slot to Pin the Swing Arm from the Box Below
Figure 3a:
XLC Rigging Hardware
