Stacking On Top Of V-Dosc - L-Acoustics dV-DOSC Operator's Manual

Stacking on top of V-DOSC

For dV-DOSC upfill applications, dV-BUMP is attached to the V-DOSC bumper to act as a stacking
platform using the same stacking procedures outlined above.
For stability reasons, the maximum number of dV-DOSC enclosures that can be stacked on top of V-
DOSC is 6. Typically, allowable trim height and chain motor clearance issues will be the determining
factors with respect to the number of cabinets that can be used.
Standard rigging procedures for V-DOSC are followed (please see the V-DOSC manual for complete
details). For the front motor point, bridling should be performed using the outer points on the V-
DOSC bumper in order to ensure that steel or motor chain does not interfere with the high
frequency section of dV-DOSC once it is stacked on top of V-DOSC.
Once all standard V-DOSC flying preparations are complete, the first step is to raise the front motor
so that the V-DOSC BUMPER rotates upwards to a horizontal position. If necessary take any slack out
of the rear motor so that the V-DOSC BUMPER is securely supported in the horizontal position.
Attach dV-BUMP to the V-DOSC BUMPER by mating the two locating studs on dV-BUMP with the
corresponding holes on the center cross bar section of the V-DOSC BUMPER. A steel stud and dV-
PIN81 quick release pin are used to mechanically secure dV-BUMP to the V-DOSC BUMPER at the
central hole position.
In preparation to begin stacking, pre-attach two dV-ANGLEP1 bars to the two rear mount points on
dV-BUMP using two dV-PIN25. Selecting the 3.75 degree hole (middle position) will set the bottom
dV-DOSC enclosure parallel to the top V-DOSC enclosure for long throw applications. For upfill
applications, selecting the minimum 7.5 degree hole position (tightly wrapped) will provide 3.75
degrees tilt upwards with respect to the top V-DOSC enclosure while selecting the 5.5 degree hole
position will provide 1.75 degrees.
Note: For upfill applications, the trapezoidal angle of the bottom dV-DOSC enclosure must be taken into
account. The 3.75 degree angle provides the same site angle for the bottom dV-DOSC as the top V-DOSC
(0 deg relative site angle). Subtract 3.75 from all other dV-ANGLE values to obtain the correct site angle for
the bottom dV-DOSC relative to the top V-DOSC, i.e., the 7.5 degree hole provides 3.75 degrees relative
(upwards).
Orienting dV-DOSC with the rigging tabs down (grille logo in the correct orientation), place the first
dV-DOSC on dV-BUMP by mating the front rigging tabs and rear locator slots with the locator slots
and rear dV-ANGLE bars that were previously attached to dV-BUMP. Attach all four points using four
dV-PIN25 (front first, rear last) to secure the bottom dV-DOSC to dV-BUMP.
The next step is to connect two dV-ANGLE (P1 or P2) bars to the rear locator slots of the bottom
dV-DOSC enclosure using two dV-PIN25. Pre-select the appropriate hole position to give the desired
tilt angle for the second enclosure. Note: As a reference for dV-ANGLE bar orientation, the ball/tab of
the angle bar should always be facing outwards.
Place the second dV-DOSC on top of the bottom enclosure by mating the two front rigging posts on
the second enclosure and the dV-ANGLE bars that were previously mounted on the bottom
enclosure with the available locator slots. Attach the two front points using two dV-PIN25 to secure
the second dV-DOSC enclosure's front rigging posts to the bottom enclosure. Tilt the rear of the
second enclosure if necessary and secure the rear points using two dV-PIN25.
The same procedures are followed for all other dV-DOSC enclosures of the array until stacking is
completed.
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dV-DOSC dV-SUB Manual V3.0 June 2005