Flown Systems; Standalone Rigging With Dv-Bump Or Dv-Bump2 - L-Acoustics dV-DOSC Operator's Manual

4.2 FLOWN SYSTEMS

Standalone Rigging with dV-BUMP or dV-BUMP2

Flying a dV-DOSC array is fast and easy. When properly prepared and organized, handling time can be
significantly reduced in comparison with conventional systems. Installation is optimum when 2-3
people are available although it is possible for a single person to fly dV-DOSC.
Preliminary Preparations:
All geometrical data for installing the array (i.e., trim height, bottom enclosure elevation, inter-
enclosure angles) has been pre-calculated using ARRAY2004 or SOUNDVISION
Two independent rigging points are available, directly in line and with the desired pan angle for the
array as determined using ARRAY2004 (ISOCONTOUR sheet) or SOUNDVISION
Alternatively, a single point hang can be performed using the points available on the central
spreader bar section of dV-BUMP / dV-BUMP2 or the rear extension bar
Access is available beneath the flying points, i.e., a flat surface where it is possible to assemble dV-
DOSC enclosures
Given the above conditions:
The first step is to unpack and organize all dV-DOSC enclosures and rigging hardware at the flying
location. As a reference for cabinet orientation, the front grill logos should all be in the correct
orientation and the bottom rigging tabs facing down once the system is flown.
Line up all dV-DOSC enclosures in their flight cases (3 per case). Mate the bottom rigging tabs from
the first group of 3 cabinets with the top locator slots of the next group of cabinets. Repeat until all
dV-DOSC flight cases are physically lined up.
Physically connect the fronts of all dV-DOSC enclosures by attaching the front points using dV-PIN25.
The entire assembly will then be physically linked, similar to how V-DOSC is attached using rotating
legs and U-pins (except the attachment points are at the front in this case).
Place dV-BUMP or dV-BUMP2 at the top of the array, oriented so that the rear extension bar slot is
facing upwards. If desired, attach the extension bar to dV-BUMP using an 18 mm shackle at pick point
hole number 8 on the central spreader bar section. The extension bar allows the use of two motors
for tilt adjustment or single point hangs of up to 12 enclosures from the 8 additional points available on
the extension bar. Note: 12 enclosures, tightly wrapped at 7.5 degrees provide 90 degree coverage
focussed from vertical to horizontal when the rearmost pick point of the extension bar is used. If the
extension bar is not used, 8 pick point positions are available on the central spreader bar section of
dV-BUMP or dV-BUMP2 for single point hangs and up to 24 dV-DOSC can be flown.
NOTE: Hole #8 is used to secure the extension bar. Therefore, for 2 motor hangs off holes 0
and 16, three 18 mm shackles are required.
Pre-attach dV-ANGLE P1 at the 3.75 degree (middle hole) position to the two rear points on dV-
BUMP or dV-BUMP2 using dV-PIN25. Pre-attach dV-ANGLE P1 at the 7.5 degree (smallest gap)
position to the front points on dV-BUMP or dV-BUMP2. As a reference, the ball/tab end of all four
dV-ANGLE bars should be facing outwards.
Note: The 3.75 degree angle between the rear of the top enclosure and dV-BUMP is necessary to
compensate for the trapezoidal angle of dV-DOSC (the actual site angle of the enclosure which is
perpendicular to the front of the enclosure). Using a 3.75 degree angle at the rear allows focus to be verified
with a laser attached to dV-BUMP since this will be parallel to the site angle of the top enclosure.
The next step is to attach dV-BUMP or dV-BUMP2 to the top enclosure by mating the pre-attached
dV-ANGLE bars to the locating slots of the top enclosure. Use four dV-PIN25 to physically connect
dV-BUMP or dV-BUMP2 to the top enclosure.
dV-DOSC dV-SUB Manual V3.0 June 2005
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