Xb Bass System
Xb Bass System
3
leled with an Xb, allowing all eight conduc-
tors to be used with a single cable run to the
amplifiers. Note that, when two Xb systems
are jumped from one to another via the in-
put/output connections, the amplifier home
run cable will have two LF drivers on Pins 2
(for a 4-ohm load) and two LF drivers on
Pins 1 (for a 4-ohm load).
Flying the X-Array
™
Systems
The X-Array™ loudspeaker systems all uti-
lize the same rigging hardware and have the
same structural strength ratings. Thus, dif-
ferent systems may be mixed in an array to
achieve the best acoustic results. The rigging
system allows for the smallest possible spac-
ing between adjacent enclosures, and uti-
lizes 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 angles 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
aluminum 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 accommo-
date the New Haven 32102-2 aircraft-type
double-stud locking fitting instead of the
hinge for applications requiring a lower
strength rating.
The removable, front strap assemblies uti-
lize all-steel standard New Haven 32102-2
aircraft-type double-stud locking fittings and
wire-rope and are secured into another pro-
prietary track similar to the heavy-duty air-
craft L-track. The track is extruded as a
single-piece track/angle-bracket assembly
that ties into the front and side of the enclo-
sure. The track/angle-bracket assembly ex-
tends from the top to the bottom of the en-
closure, 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 and for picking up the top enclo-
sure in a column without a grid. Consult the
X-Array
™
Accessories section for a complete
listing of the available rigging accessories.
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 struc-
tural specifications and detailed instruc-
tions for safely suspending and using the
X-Array
™
systems.
Field Replacement
Normal service for the Xb 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 securing the
18-inch woofer and lift the driver out of the
enclosure. In the event of failure, the entire
woofer must be replaced.
The following service parts are available
from the service department in Buchanan,
Michigan USA:
LF #818-2883 EVX-180B complete driver
Architects’ and Engineers’
Specifications
The loudspeaker system shall be a two-
driver, manifolded, vented-box low-fre-
quency system with a frequency response
from 37-160 Hz. The loudspeaker system
also shall have two 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 en-
abling 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 914 mm (36.00 in.)
high, 584 mm (23.00 in.) wide at the front,
365 mm (14.38 in.) wide at the back and 759
mm (29.88 in.) deep, and shall weigh 83 kg
(184 lb).
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 con-
sists of two precision-machined steel rigging-
track fittings connected by an alloy-steel
chain. Part number 510-2999. Electro-Voice,
600 Cecil St., Buchanan, MI 49107 USA,
616/695-6831 or 800/234-6831
Xrhp Pickup Hinge: Two Xrhp pickup rig-
ging hinges are used to create custom rig-
ging assemblies to attach to the rear of the
top enclosure in a column when an ATM grid
is not used. Each hinge consists of one pre-
cision-machined steel rigging-track fitting
with an alloy-steel chain. Part number
510-3000. Electro-Voice, 600 Cecil St.,
Buchanan, MI 49107 USA, 616/695-6831
or 800/234-6831
