L-Acoustics dV-DOSC Operator's Manual
Also see for dV-DOSC: Operator's manual
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dV-DOSC dV-SUB Manual V2.0 Nov 2001 101Flying under V-DOSC with dV-DOWNTypically, 3-4 dV-DOSC are recommended for flying under V-DOSC for downfill applications. Themaximum number of dV-DOSC that can be flown under V-DOSC is 6. In most cases, dV-DOSCelements will be used at the maximum angle between cabinets, i.e., 7.5 degrees, and the enclosureswill be tightly wrapped according to the trapezoidal angle of the enclosures.Standard rigging procedures for V-DOSC are followed (please see the V-DOSC manual for completedetails). Fly the V-DOSC array in the normal manner but do not connect the ANGLE straps of thebottom V-DOSC element. Flip down the rotating legs (balanciers) of the bottom V-DOSC element inpreparation for attachment to dV-DOWN.Remove the FLIGHT-dV case cover and wheel 3 dV-DOSC into position (face down). As a referencefor cabinet orientation, the logos will be in the correct orientation and the bottom rigging tabspointing down once the system is flown. Pin the fronts of all dV-DOSC together using dV-PIN25(four required). Attach pairs of dV-DOWN flying bars to the top element using four dV-PIN81.Pre-attach pairs of dV-ANGLE bars at the rear of all dV-DOSC elements of the array. Remember tokeep the ball end of dV-ANGLE up as a reference and be careful to select the correct angle.Typically, for downfill applications the 7.5 degree position (minimum hole separation) will beselected to produce a tightly wrapped array for maximum vertical coverage.Connect the rears of all 3 dV-DOSC elements while they are still face down in their flight cases bypulling the cabinets together at the rear and inserting dV-PIN25. This operation is facilitated by thefact that all fronts are pinned together and can pivot, plus all rear angles were pre-attached in theprevious step.Loosen the screwjacks on dV-BUMP so that they do not interfere while dV-DOWN is attached tothe V-DOSC rotating legs. Do not tighten the screwjacks until the dV-DOSC array is floated abovethe ground. Since the angle strap for the bottom V-DOSC has not been attached, this helps tofacilitate alignment of the holes on the rotating legs with the corresponding holes on dV-DOWN(when the holes are aligned, the V-DOSC rotating leg will be oriented vertically). Once aligned,attach both dV-DOWN to the V-DOSC rotating legs using two U-PINS. Install the locking safety pinson the U-PINS.Proceed to raise the system. The dV-DOSC enclosures will automatically lift off from the flight case.Fly the system until dV-DOSC is floating above floor level.At this point the angle straps for the bottom V-DOSC element can be connected, i.e., one person oneither side can swing the bottom V-DOSC cabinet upwards and attach the angle strap on each side.Once flown, there will be a gap between dV-DOSC and the bottom V-DOSC element. To removethis gap, the two dV-DOWN screwjacks are tightened to firmly secure dV-DOWN and the first dV-DOSC element to the V-DOSC enclosure, i.e., as the screwjacks are tightened, the underhung dV-DOSC array will swing upwards. Do not overtighten the screwjacks.At this point, the system is ready to be taken up to trim and the installation completed by verifyingtrim height and focus. During de-installation, the procedure is reversed. Loosen the screwjacks,remove the front dV-PIN25, remove the bottom V-DOSC element angle straps and then land thedV-DOSC enclosures face down in their flight case as the system is lowered. |
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