System information
X-Array Touring Loudspeaker Systems – Applications Notes – Page 1
0. INTRODUCTION
The X-Array™ product line represents important advancements in concert-sound technology. The design
goals called for the highest acoustic output capability with the highest fidelity, in lightweight, compact en-
closures that were easy to array. The development began with a clean sheet of paper and took an inte-
grated approach. The individual loudspeaker drivers, horns, enclosures, rigging, hardware and system
configurations were designed from the ground up specifically for this high-performance application. Fig-
ure 1 illustrates the X-Array™ product line and a brief description of each model is included below. Con-
sult the individual system engineering data sheets for detailed specifications.
Xf: Far-field, two-way mid-bass/high-frequency (MB/HF) loudspeaker system with a 40H°x20V° coverage
pattern. The system has two ND12A 305-mm (12-inch) MB drivers and two ND5-16 76-mm (3-inch) HF
compression drivers. The Xf utilizes the standard full-size X-Array™ enclosure shell and the standard X-
Array™ flying hardware.
Xn: Near-field, three-way, semi-full-range, low-frequency/mid-bass/high-frequency (LF/MB/HF) loud-
speaker system with a rotatable 60°x40° coverage pattern. The system has one EVX-180B 457-mm (18-
inch) LF driver, one ND12A 305-mm (12-inch) MB driver and one ND5-16 76-mm (3-inch) HF compres-
sion driver. The Xn utilizes the standard full-size X-Array™ enclosure shell and the standard X-Array™
flying hardware.
Xb: Bass loudspeaker system with two EVX-180B 457-mm (18-inch) low-frequency (LF) drivers. The Xb
utilizes the standard full-size X-Array™ enclosure shell and the standard X-Array™ flying hardware.
Xds: Double subwoofer loudspeaker system with two EVX-180B 457-mm (18-inch) subwoofer (SUB
drivers. The Xds utilizes the double-wide X-Array™ enclosure shell and does not have flying hardware.
Xcn: Compact near-field, two-way mid-bass/high-frequency (MB/HF) loudspeaker system with a ro-
tatable 60°x40° coverage pattern. The system has one ND12A 305-mm (12-inch) MB driver and one
ND5-16 76-mm (3-inch) HF compression driver. The Xcn utilizes the half-size X-Array™ enclosure shell
and the standard X-Array™ flying hardware.
Xcb: Compact bass loudspeaker system with one EVX-180B 457-mm (18-inch) low-frequency (LF)
driver. The Xcb utilizes the half-size X-Array™ enclosure shell and the standard X-Array™ flying hard-
ware.
Xw12: Wedge floor-monitor, two-way, full-range loudspeaker system with a 55H°x80V° coverage pat-
tern. The system has one custom 305-mm (12-inch) low-frequency (LF) driver and one DH6-16 76-mm
(3-inch) high-frequency (HF) compression driver. The Xw12 utilizes a mirror-image slanted shell and
does not have flying hardware.
Xw15: Wedge floor-monitor, two-way, full-range loudspeaker system with a 55H°x80V° coverage pat-
tern. The system has one custom 381-mm (15-inch) low-frequency (LF) driver and one DH6-16 76-mm
(3-inch) high-frequency (HF) compression driver. The Xw15 utilizes a mirror-image slanted shell and
does not have flying hardware.
1. LOUDSPEAKER-SYSTEM INFORMATION
1.1 Loudspeaker-Component Impedance
All of MB and HF drivers in the X-Array™ loudspeaker systems have a nominal impedance of 16 ohms
each, while all of the LF and SUB drivers have a nominal impedance of 8 ohms each. When two MB
drivers are used in the same enclosure (such as in the Xf), the drivers are paralleled inside the enclosure
for an overall 8-ohm nominal MB system impedance. Likewise, when two HF drivers are used in the
same enclosure (again as in the Xf), the drivers are paralleled inside the enclosure for an overall nominal
8-ohm HF system impedance. When two LF or SUB drivers are used in the same enclosure (such as in
the Xb or Xds), the drivers are not paralleled, but rather wired to different sets of connector pins on the
input panel presenting two nominal 8-ohm loads. Knowledge of the system nominal impedances is es-
sential for planning amplifier loads and cabling. The wiring diagrams of all of the X-Array™ loudspeaker
systems are shown in Figure 2.