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1.2 dV-DOSC ENCLOSURE DESCRIPTION
Figure 5: dV-DOSC Element - Front and Rear Views
dV-DOSC contains two 8" loudspeakers (connected in parallel) and a 1.4" exit compression driver
mounted on a custom DOSC waveguide. The 8'' loudspeakers are individually rated at 16 ohms and
connected in parallel to provide a nominal impedance of 8 ohms. The nominal operating bandwidth
for the 8'' section is 100 Hz to 800 Hz. A surface coating is applied to the composite cellulose fibre
cone body and all metal parts are corrosion-treated to ensure weather resistant protection. Other
features include: rugged kevlar dustcap, 2'' diameter edgewound copper voice on a polyimide
former, high excursion/reduced fatigue suspension and a compact, high flux density magnetic system.
Nominal impedance for the high section is 8 ohms and the compression driver employed in dV-
DOSC features a 1.4'' exit, titanium diaphragm, 3'' diameter edgewound aluminum voice coil and a
lightweight neodymium magnet. These features combine to provide high sensitivity and power
handling with low distortion over the entire operating bandwidth (800 - 18k Hz). A removable rear
panel allows access to the compression driver for servicing the diaphragm.
Each dV-DOSC element is provided with two Speakon connector sockets for direct connection and
paralleling of up to three enclosures. Elements are paralleled using SP.7 loudspeaker cables (0.7 m
length). Direct connection of elements to the AMP RACK is made using SP7 or SP25 (7 m or 25 m
length, as required) in conjunction with the DO2W adapter and two CC4F. Alternatively, connection
can be made using standard V-DOSC cables (DO7 or DO25) and the DOFILL adapter (8 pin male
CA-COM barrel to dual speakon breakout).
The bandwidth of dV-DOSC is 100 Hz to 18 kHz. For extended bandwidth applications, the addition
of dV-SUB or SB218 subwoofers is recommended in order to extend the response to 25Hz and
increase the available headroom in the extreme low frequency range.
1.3 dV-DOSC FLYING SYSTEM
Flying a dV-DOSC array is easy, fast and secure since the trapezoidal shape of the enclosure and
integral rigging plates allow for efficient stacking, transport and handling. dV-DOSC features a unique
flying system where rear mounted angle bars are used to control the angle between enclosures, i.e.,
cabinets pivot about the front mount points and selecting the desired hole on the rear angle bars
adjusts the angle between enclosures. When dV-ANGLE P1 or P2 bars are used, convex (positive
curvature) arrays can be constructed ranging from flat up to a maximum of 7.5 degrees between
cabinets in increments of approximately 1 degree. When dV-ANGLEN bars are used, concave
(negative curvature) arrays can be constructed ranging from flat up to a maximum of minus 7.5
degrees between cabinets in increments of approximately 1.75 degrees.
dV-DOSC dV-SUB Manual V2.0
Nov 2001
23
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