dV-DOSC dV-SUB Manual V3.0 June 2005 109
Stacking dV-DOSC on top of dV-SUBS
There are two options for stacking dV-DOSC: with, or without dV-BUMP.
Procedure 1: Stacking without dV-BUMP
When stacking on stages or risers, reduced downwards tilt requirements for the stacked dV-DOSC
system may allow for the direct installation of dV-DOSC on top of dV-SUB without use of dV-BUMP.
Similarly, for stacked field level distributed systems, systems are normally oriented upwards and
downwards tilt is not required.
For stacking without dV-BUMP, two dV-ANGLESD (sub to dV-DOSC) angles are used for the front
attachment points and two dV-ANGLESDP (sub to dV, positive tilt) are used for the rear attachment
points of the first dV-DOSC. The dV-ANGLESDP angle bar provides tilt angles of 0 (dV-DOSC flat
with respect to dV-SUB- furthest hole position), 1.75 (intermediate) and 3.75 degrees (tightly
wrapped - minimum hole position).
Note: For additional upwards tilt, the dV-ANGLESD and dV-ANGLESDP can be reversed (i.e., dV-
ANGLESDP installed at the front, dVANGLE-SD at the rear).
Before stacking dV-DOSC, build the dV-SUB stack and physically secure the enclosures using dV-
ANGLESS angles between cabinets (and/or a ratchet strap around the entire stack). Physically securing
dV-SUBs will provide extra stability during the dV-DOSC stacking procedure and will also prevent
subs from moving during the show.
With reference to the photo sequence that follows, pre-attach 2 x dV-ANGLESD at the front of the
top dV-SUB and 2 x dV-ANGLESDP at the rear using 4 x dV-PIN25. The closest holes on these angle
bars are used for stacked applications and the ''fat'' part of the angle bars is oriented towards the
center of dV-SUB in order to mate properly with the dV-DOSC rigging panels.
Figure 79: dV-ANGLESD, dV-ANGLESDP angle bars
The first dV-DOSC is inverted and placed in position by mating the rigging recesses on the dV-DOSC
rigging panels with the pre-attached dV-ANGLESD and dV-ANGLESDP angle bars. Secure the front
two attachment points using 2 x dV-PIN25 then raise the dV-DOSC at the rear and select the desired
tilt angle on dV-ANGLESDP (0, 1.75 or or 3.75 degrees), again securing the two rear points using 2 x
dV-PIN25. Continue to build the stack by pre-attaching dV-ANGLE P1 or P2, pre-selecting the
desired tilt angle and securing with dV-PIN25 before installing additional dV-DOSC enclosures.
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