Electro-Voice xcn eds ユーザーズマニュアル

Xcn T

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ay MB/HF System

Xcn Two-Way MB/HF System

2

ity with the nature of that coloration vary-

ing with level. Often, the listener perceives

that coloration as imbalance in the fre-

quency response, and will attempt to elec-

tronically adjust the system to restore the

spectral balance. However this electronic

equalization has the negative effect of

changing the program material itself.

Ring-Mode Decoupling (RMD™) ad-

dresses mechanical resonances with me-

chanical solutions, and acoustical reso-

nances with acoustical solutions. In the

Xcn development, RMD™ was applied at

every level – to the individual mid-bass

and high-frequency drivers, the  mid-bass

and high-frequency horns, the mid-bass

chamber, the interaction between the mid-

bass and high-frequency bands and the

interaction between multiple enclosures.

The design process included, for example,

the driver diaphragm, cone, suspension

and phase-plug geometry and materials,

horn geometry and materials, enclosure ge-

ometry and materials, absorptive materi-

als, etc. The result is a dramatic improve-

ment in clarity and with a much more neu-

tral sound (a lack of coloration), with the

loudspeaker system maintaining its sonic

integrity from the very-lowest sound-pres-

sure levels, to the very-highest sound-pres-

sure levels. This means that the front-of-

house engineer will not have to retune the

EQ and level settings as the SPL is in-

creased throughout the show. This also

means that the sound-system performance

will remain consistent in different array con-

figurations and from venue to venue.

The X-Array™ systems utilizes a unique

rigging system. A hinge assembly is used

to link cabinets together at their rear cor-

ners, while wire-rope/fitting assemblies are

used at the front to adjust the relative angle

between systems. (See the Flying the X-

Array™ Systems section for more details.)

The Xcn utilizes the half-size X-Array™

enclosure shell, which is identical to that

of the Xcb bass system. They have the

same footprint and rigging as the full-size

X-Array™ systems; however, the height

of the compact systems is approximately

half that of the full-size systems.

The durable Xcn enclosure is constructed

of 18-mm, 13-ply birch plywood and has a

wear-resistant black, textured paint finish.

The system is trapezoidal, forming an

18° wedge, and includes a heavy-duty

steel grille with a water-resistant charcoal-

gray foam interlining. The enclosure fea-

tures vinyl bumper pads on the front cor-

ners and feet on the bottom to resist wear.

A variety of accessories are available for

the X-Array™ loudspeaker systems, in-

cluding rigging hardware, dollies, covers,

electronic crossovers, amplifier racks and

speaker cabling. Consult the X-Array™ Ac-

cessories section for a complete listing the

available accessories.

The X-Array™ loudspeaker systems were

designed for optimal performance in both

concert-sound and permanent-installation

applications where studio-monitor sound

quality is required at concert-sound lev-

els. The X-Array™ loudspeaker systems

work well individually, in small arrays and

in large arrays. The high-acoustic output

from these compact, lightweight systems

provide the highest acoustic-power-to-

weight ratio, the highest acoustic-power-

to-frontal-area ratio, and the highest acous-

tic-power-to-bulk-volume ratio in the in-

dustry. That means that X-Array™ sys-

tems will be considerably smaller and lighter

compared to competitive systems having

equivalent acoustic output.

The 60° x 40° coverage pattern of the Xcn

makes it ideal for sound-reinforcement ap-

plications with short- to medium-throw

requirements. With its response from 125-

20,000 Hz, the Xcn is recommended for mid-

bass/high-frequency applications, and

should be used with an X-Array™ bass

box (like the Xb, Xcb or Xds) for full-range

performance. The Xcn may be used indi-

vidually or in multiples to construct arrays.

In addition, the Xcn may be used with the

MB/HF- or LF/MB/HF X-Array™ loud-

speaker systems (like the Xf, Xn or Xcn) to

construct large full-range arrays. The Xcn

enclosure is identical to that of the other

half-size X-Array™ systems (like the Xcb).

The footprint of the half-size X-Array™

enclosures is identical to that of the full-

size X-Array™ systems (like the Xn, Xf

and Xb), as is the rigging hardware, mak-

ing array integration easy whether flying

or stacking. The rotatable horn pattern of-

fers tremendous flexibility to tailor the pat-

tern to the application. For example, the

60°H x 40°V orientation would be well

suited for front-of-house, front-fill and side-

fill applications while the 40°H x 60°V ori-

entation would be well suited for down-fill

applications.

The Xcn is a two-way active system that

requires an active electronic crossover.

Both the Electro-Voice Dx38 and Klark

Teknik DN8000 digital crossovers are rec-

ommended for signal control. (See the

lay Controller section.) The Electro-Voice

P3000 amplifier is recommended for pow-

ering the Xcn. (See the Amplifier Recom-

mendations section.)

The Xcn systems are rated as per the

“ANSI/EIA RS-426-A Loudspeaker Power

Rating, Full Range Test,” which uses a

shaped-random-noise signal to simulate

typical music to test the mechanical and

thermal capabilities of the loudspeakers.

A digital crossover was used to provide

the appropriate filtering and equalization.

The test parameters are as follows:

P

E(MAX)

:

75 watts

Test Voltage:

30.1-volts rms

60.2-volts peak

R

SR

 (1.15 R

E

):

12.1 ohms

P

E(MAX)

:

300 watts

Test Voltage:

45.5-volts rms

91.0-volts peak

R

SR

 (1.15 R

E

):

6.90 ohms

Power amplifiers with the following ratings

are recommended for use with the Xcn

loudspeaker systems:

HF:

800 watts per channel

into 8 ohms