VTX A12
| Rigging Manual
31
9.6 - EXTENSION BAR AND FRAME ORIENTATION
There are three different positions that can be used to secure the Extension Bar to the Array Frame when preparing to suspend
an array. Note that the choice of physical attachment position must come from correct selection of the attachment position in the
LAC prediction. Depending on the frame orientation, the top enclosure of an array should be set to a specific angle to achieve the
proper frame-to-cabinet connections.
NORMAL
This is the standard attachment position for most suspend-
ed array configurations. It allows for a small amount of up-
tilt and the most amount of down-tilt when properly config-
ured. The Extension Bar hangs off the back of the Array
Frame, and additional shackle points are available for cable
strain relief off the back of the array.
REVERSE EXTENSION BAR
This attachment position can be used when the LAC predic-
tion indicates that more up-tilt is needed to reach the de-
sired array site angle. The Array Frame remains attached
to the array in the standard position, but the Extension Bar
is attached in reverse. The A, B and C attachment posi-
tions can still be used if a single-point suspended array is
necessary. This configuration provides additional up-tilt but
with a limited number of cabinets.
REVERSE EXTENSION BAR + REVERSE ARRAY FRAME
When both maximum up-tilt and maximum array weight
support is needed, the LAC prediction may dictate that this
attachment configuration should be used. The reversal of
the Extension Bar enables maximum up-tilt, while the rever-
sal of the Array Frame allows the system to support great-
er weight off the front motor point. These conditions are
generally found when larger arrays are pointed more up-
wards, such as long side hangs for stadiums or main hangs
for tall theaters.
PIN POSITION:
10°
PIN POSITION:
10°
PIN POSITION:
0 .25°
CAUTION:
Always refer to LAC to determine the safe Array Frame and Extension Bar orientation.
