L-Acoustics dV-DOSC Operator's Manual page 85

Bottom dV-SUB in position, second dV-SUB with dV-ANGLESS pre-attached
Crown the bottom front edge of the second dV-SUB
Rotate/lower the second dV-SUB into position and position all four dV-
Use 4 x dVPIN25 to attach the second enclosure to the bottom dV-SUB
ANGLESS in the corresponding slots of the bottom enclosure's rigging panels
dV-DOSC dV-SUB Manual V2.0 Nov 2001 85