Electro-Voice X-Array Xw12 User Manual page 2

Crossover, Equalization and Time-Delay
Controller
The Xw12 speaker system was designed
as an integrated package that utilizes
the Electro-Voice Dx38 digital crossover
system.
The Dx38 features a 125-Hz crossover fre-
quency utilizing
Linkwitz-Riley filters, and contains time
delay and equalization for optimum per-
formance of the Xw12.
Electrical Connection and System
Wiring
Electrical connections to the Xw12 are
made on the sides of the enclosure via par-
allel pass through 4-pin connectors. There
are two connectors on each of the input
panels to allow paralleling of other Xw12
systems. The Neutrik Speakon
is used for both connections. The pin as-
signments are as follows:
Pin 1+: LF(+)
Pin 1-: LF(–)
Pin 2+: HF(+)
Pin 2-: HF(–)
The wiring diagram of the loudspeaker
system is shown in Figure 7. The electrical
impedance is shown in Figure 6.
Amplifier Requirements
Power amplifiers with the following ratings
are recommended for use with the Xw12
speaker systems:
LF: 600 watts per channel into 8 ohms.
HF: 600 watts per channel into 8 ohms.
Xw12 speakers may be paralleled only with
other Xw12 speakers if the amplifier is ca-
pable of delivering full power at the lower
impedances. The use of amplifiers with
lower power ratings is acceptable; how-
ever, the full-power capabilities of the Xw12
speakers will not be realized. The use of
amplifiers with significantly higher power
ratings will generate maximum dynamic
range and fidelity, but care must be uti-
lized for longer duration signals as mechani-
cal and thermal damage are possible in the
system. Under certain circumstances, higher
rated amplifiers are acceptable. It is accept-
able to drive the Xw12 speakers with a ste-
reo power amp utilizing one channel to drive
2
Xw12 T wo- W ay , F ull-Range Floor Monitor
the low frequencies and the other channel
to drive the high frequencies.
Field Replacement
The Xw12 may be serviced in the following
ways. Remove the grille to allow access to
both the woofer and high-frequency driver.
Remove the woofer bolts to allow the woofer
24-dB-per-octave to easily be removed for repair or replacement.
In case of a compression driver failure, a dia-
phragm assembly replacement kit is available.
To remove the compression driver, remove the
horn-mounting screws. Remove the woofer
to gain access to the compression driver. Re-
move the two accessable hex socket screws
attaching the horn to the driver through the
woofer cut-out opening. After removing the
screws, lift the high-frequency horn and ro-
tate 180 degrees allowing access to remove
the remaining screws. Remove the compres-
®
NL4MPR sion driver through the woofer cut-out open-
ing. If desired, the complete driver may be re-
turned for service.
The following replacement parts are avail-
able from EVI Audio Service in Buchanan,
Michigan:
LF: Complete woofer: EV Part No. 812-2997
HF: Diaphragm kit: EV Part No. 84233-XX
Architects' And Engineers'
Specifications
The loudspeaker speaker system shall be a
two-way biamped system with performance
controlled by a variety of dedicated electronic
control units. The loudspeaker system shall
have a 305-mm (12-inch) direct-radiating
driver with an 8-ohm, 63.5-mm (2.5-inch)
voice coil constructed of aluminum wire, and
shall be capable of a 300-watt shaped pink-
noise signal with a 6-dB crest factor for eight
hours (as per ANSI/EIA RS-426-A 1980).
The loudspeaker system shall have a 35.6-mm
(1.4-inch) exit compression driver mounted on
a high-frequency horn. The compression
driver shall have 76.2-mm (3.0-inch) diam-
eter, titanium dome and a 16-ohm nominal,
76.2-mm (3.0-inch) diameter voice coil con-
structed of aluminum wire, and shall be ca-
pable of handling a 75-watt, 1,600-20,000-
Hz pink-noise signal with a 6-dB crest factor
for eight hours (as per ANSI/EIA RS-426-A
1980 standard). The high-frequency horn shall
be of the constant-directivity type and shall
produce a nominal horizontal beamwidth
(6-dB-down angle) of 80° from 2,000-20,000
Hz and a nominal vertical beamwidth of 55°
from 1,600-20,000 Hz. The loudspeaker
system enclosure shall be constructed of 18-mm
thick, 12-ply flat birch plywood and .75-inch
thick, 12-ply curved birch plywood, covered
with black textured paint and shall have a
14-gauge perforated steel grille.
When used with the electronic control unit,
the loudspeaker system shall have a flat on-
axis frequency response from 60 -16,000 Hz.
The loudspeaker enclosure dimensions
shall be 358.3 mm (14.11 in.) high, 584.2 mm
(23.00 in.) wide and 408.8 mm (16.10 in.) deep
and shall weigh 28.2 kg (62 lb).
The loudspeaker shall be the Electro-Voice
Xw12 .
Uniform Limited Warranty
Electro-Voice products are guaranteed
against malfunction due to defects in mate-
rials or workmanship for a specified period,
as noted in the individual product-line
statement(s) below, or in the individual prod-
uct data sheet or owner's manual, beginning
with the date of original purchase. If such
malfunction occurs during the specified pe-
riod, the product will be repaired or replaced
(at our option) without charge. The product
will be returned to the customer prepaid.
Exclusions and Limitations: The Limited
Warranty does not apply to: (a) exterior fin-
ish or appearance; (b) certain specific items
described in the individual product-line
statement(s) below, or in the individual prod-
uct data sheet or owner's manual; (c) mal-
function resulting from use or operation of
the product other than as specified in the
product data sheet or owner's manual; (d)
malfunction resulting from misuse or abuse
of the product; or (e) malfunction occurring
at any time after repairs have been made
to the product by anyone other than
Electro-Voice Service or any of its autho-
rized service representatives. Obtaining
Warranty Service: To obtain warranty ser-
vice, a customer must deliver the product,
prepaid, to Electro-Voice Service or any of
its authorized service representatives to-
gether with proof of purchase of the prod-
uct in the form of a bill of sale or receipted
invoice. A list of authorized service repre-