Xcb Bass System
Xcb Bass System
3
the other for output connection only. Also
note that Pins 1 In are connected to Pins 2
Out, and Pins 2 In are connected to Pins 1
Out. This facilitates the wiring of multiple
systems with amplifiers. When four Xcb
systems are jumped from one to another
via the input/output connections, the am-
plifier home-run cable will have two woof-
ers on Pins 1 (for a 4-ohm load) and two
woofers on Pins 2 (for a 4-ohm load). Al-
though Pins 3 and 4 are not used by the
Xcb systems, they are paralleled on the
input panel. This allows an X-Array™ MB/
HF box (like the Xcn or Xf – which use
Pins 1 and 2, but not Pins 3 and 4) to be
paralleled with an Xcb, allowing all eight
conductors to be used with a single cable
run to the amplifiers.
Flying the X-Array™ Systems
The X-Array™ loudspeaker systems all
utilize the same rigging hardware and have
the same structural strength ratings. Thus,
different systems may be mixed in an array
to achieve the best acoustic results. The
rigging system allows for the smallest pos-
sible spacing between adjacent enclosures,
and utilizes quick-release rigging fittings
for fast installation and tear down.
When flown, the X-Array™ enclosures are
linked together by two removable hinges on
the rear of the enclosures at the top and bot-
tom. This arrangement enables the enclo-
sures to pivot vertically from the rear cor-
ners. The relative vertical angle between
adjacent enclosures is adjustable and set by
two removable rigging straps on the front of
the enclosures at the top and bottom. Both
the rear rigging hinges and the front rigging
straps are installed when enclosures are sit-
ting on top of one another. For ease of in-
stallation of the hinges and straps, the en-
closures self align using feet and cups
mounted on the top and bottom of the en-
closures. The relative horizontal angle be-
tween adjacent columns of loudspeakers is
set by adjustable grids at the top of the array
(or by custom-building attachment supports
in permanent-installation applications where
grids are not used).
The removable proprietary rear rigging
hinges utilize all-steel construction, and are
secured into a proprietary track assembly on
the enclosure (similar to the heavy-duty air-
craft L-track). The aluminum track is ex-
truded as a single-piece track/angle-bracket
assembly and ties into the top, bottom and
rear of the enclosure. Metal bars inside the
enclosure tie the top and bottom track/angle-
bracket assemblies together, minimizing the
load applied to the wooden enclosure. The
rear extrusion will accommodate the New
Haven 32102-2 aircraft-type double-stud
locking fitting instead of the hinge for ap-
plications requiring a lower strength rating.
The removable, front strap assemblies uti-
lize all-steel New Haven 32102-2 aircraft-
type double-stud locking fittings and wire-
rope and are secured into another proprietary
track similar to the heavy-duty aircraft L-
track. The track is extruded as a single-piece
track/angle-bracket assembly that ties into
the front and side of the enclosure. The track/
angle-bracket assembly extends from the top
to the bottom of the enclosure, eliminating
the load applied to the wooden enclosure.
A complete line of flying-hardware acces-
sories is available for the X-Array™ loud-
speaker systems including a grid, rigging
hinges and rigging straps. The variety of rig-
ging hinges and front rigging straps avail-
able include those for linking two enclosures
together, securing the top enclosure in a col-
umn to a grid and for picking up the top en-
closure in a column without a grid. Consult
the X-Array™ Accessories section for a com-
plete listing of the available rigging acces-
sories.
The total weight of a column of X-Array™
loudspeaker systems that may be supported
by the X-Array™ rigging system varies from
454-726 kg (1,000-1,600 lb) depending on
the rigging configuration details. An X-
Array™ Flying Manual is available from
Electro-Voice and is included with each
X-Array™ system shipment. The manual
should be consulted for complete structural
specifications and detailed instructions for
safely suspending and using the X-Array™
systems.
Field Replacement
Normal service for the Xcb requires only a
#2 Phillips screwdriver and a 3/16-inch hex-
key wrench. The drivers may be accessed
as follows:
LF: First remove the grille, then remove
the screws securing the hatch on the front
of the enclosure. Remove the screws se-
curing the 18-inch woofer and lift the
woofer out of the enclosure. In the event
of failure, the entire woofer must be re-
placed or reconed.
The following service parts are available
from the service department in Buchanan,
Michigan USA:
LF #818-2883 EVX-180B complete driver
The complete drivers are available only for
repair replacement and are not available for
general sale.
Architects’ and Engineers’
Specifications
The loudspeaker system shall be a two-
driver, slot-loaded, vented-box low-fre-
quency system with a frequency response
from 37-200 Hz. The loudspeaker system
also shall have one 457-mm (18-in.) low-
frequency woofers and each shall have an
8-ohm, 101-mm (4-in.) diameter voice
coil and a 600-watt power rating. The loud-
speaker shall have a rigging system enabling
a column of loudspeakers to be hinged at
their back corners, with relative downward
angles set by adjustable rigging straps at the
front.
The enclosure shall be constructed of 18-mm
thick, 13-ply birch plywood, and shall be
trapezoidal, forming an 18° wedge and be
596 mm (23.46 in.) high, 584 mm (23.00 in.)
wide at the front, 354 mm (13.93 in.) wide
at the back and 759 mm (29.88 in.) deep,
and shall weigh 55.8 kg (123 lb).
The loudspeaker system shall be the
Electro-Voice Xcb.
Rigging Accessories:
Grid: This ATM Fly-Ware™ “T”–shaped,
all-steel-construction grid was specifically
designed as a single column of X-Array™
systems. Multiple grids can be linked to-
gether with couplers on front and back re-
tractable arms, the position of which sets the
splay angle between adjacent columns. Part
number MEGS-4000-T. ATM Fly-ware™,
2100 S. Wilmington Ave., Carson, CA 90810
USA, 310/834-5914
Xrhg Grid Hinge: Two Xrhg grid rigging
hinges are used to attach the rear of the
top enclosure in a column to the rear of an
X-Array™ compatible grid. Each hinge
consists of two precision-machined steel
rigging-track fittings connected by an al-
