dV-DOSC dV-SUB Manual V3.0 June 2005 115
Referring to the angle values that were pre-calculated using ARRAY2004 or SOUNDVISION, pre-
attach pairs of dV-ANGLE bars at the rear of all dV-DOSC enclosures of the array (while they are still
face down in their flight cases). Remember to keep the ball/tab end up as a reference. Be careful to
select the correct angle for each enclosure (generally, it is better if one person performs this operation
to avoid mistakes). Note that pre-selecting angles will allow the dV-ANGLE tab to act as a stop while
the array is being lifted, facilitating attachment using dV-PIN25.
Connect the rears of dV-DOSC enclosures in blocks of three (while they are still face down in their
flight cases) by pulling the cabinets together at the rear and inserting dV-PIN25. This operation is
facilitated by the fact that all fronts are pinned together and can pivot, plus all rear angles were pre-
attached in the previous step.
Connect all enclosures to the AMP RACKS using the appropriate cables and adaptors (SP and DO2W
or DO plus DOFILL) and SP.7 jumpers between enclosures for parallel operation. Long cable runs
should be dressed and tied off to dV-BUMP for strain relief. Be careful not to connect more than 3 dV-
DOSC enclosures in parallel.
Conduct a final inspection to make sure all cabling is correct, proper inter-enclosure angles have been
selected and that all dV-PIN25 are in place and securely seated.
Connect the front and rear motors (or single motor) to dV-BUMP or dV-BUMP2.
Slowly begin to raise the array. As the array lifts off, the rear gaps between blocks of 3 cabinets will
close, allowing you to progressively pin the blocks together as system goes up.
Be careful to steady the array as it lifts off the ground in order to prevent it from swinging. Gradually
lift the array until it is freely floating in air. If you are doing a single point hang, use a digital inclinometer
to verify that the tilt angle of the top enclosure is correct before taking the array up to trim. If
adjustment is required, lower the array and change the pick point until the desired tilt is obtained. Re-
calculate the trim height in ARRAY2004 or SOUNDVISION based on the actual obtained site angle
and re-optimize angles, if necessary.
Attaching rear dV-ANGLE bars and shackles to the bottom enclosure of the array then running a
ratchet strap up to the single point hang location can provide an additional degree of tilt adjustment
(down only) and also help to stabilize the array from spinning. Alternatively, the bottom two points on
dV-DOSC can also be used for attaching tie lines.
If you have 2 motors available, more detailed focus can be achieved by mounting a laser on top of dV-
BUMP (provided that you have used a 3.75 degree angle for the rear of the top enclosure so that dV-
BUMP is parallel to the site angle).
Note: Since the rigging system for dV-DOSC is front pivoting, coordinates are referenced to the front of the
top enclosure and the bottom enclosure elevation is referenced to the front of the bottom enclosure. This
means that when focussing a dV-DOSC array the front motor controls the trim height while the rear motor
controls tilt.
For demounting, lower the array and remove the front dV-PIN25 pins on the bottom three
enclosures. Roll a FLIGHT-dV case into position and land the three enclosures face down in the case.
Disconnect the rear dV-PINs of the third enclosure and wheel the block of 3 out of the way for
further hardware de-installation. Repeat this procedure in blocks of three at a time.
NOTE: WHILE LOWERING THE SYSTEM, ALWAYS BE SURE TO REVERSE THE SYSTEM (I.E., PULL THE
SYSTEM BACKWARDS) SO THAT dV-ANGLE BARS ARE NOT PHYSICALLY DAMAGED.
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