X-Array
™
: Ring-Mode Decoupling (RMD
™
), for
the best vocals you have ever heard. X-Array
™
marks the family of Electro-Voice loudspeaker
systems with Ring-Mode Decoupling. RMD
provides spectacularly clear vocals and smooth
midrange at all output levels. The X-Series
™
employs neodymium magnetics and a rigging
system designed and especially appropriate for
large, world-class touring arrays.
X-Array
™
Xi-Series
™
: High intelligibility in rever-
berant spaces through extended-frequency
directivity control. The Xi-Series
™
described in
State-of-the-art technology for accurate sound reproduction at all levels
X-Array
™
Xi-Series
™
includes
special features that set the
systems apart.
Two- and three-element
line arrays: Extended-
frequency directivity
control
Using Merlin
®
signal
processing, “dipole”
and “tripole”
configuration of the Xi-1123,
Xi-2123, Xi-1153 and Xi-2153
provides vertical coverage-
angle control to as low as
125 Hz. More of the important
vocal range is aimed at the
absorptive audience instead of
the reflective room surfaces.
This helps increase intelligi-
bility in reverberant spaces.
Reduced output below the
systems suppresses feedback
from microphones under the
loudspeakers.
Ring-Mode Decoupling
(RMD
™
): Breathtaking
vocal quality
Many acoustic
and mechanical
delayed reso-
nances color the sound of
typical loudspeakers. EV
engineers have systematically
exposed these resonances and
suppressed them one by one.
We call this process Ring-Mode
Decoupling, or RMD
™
. The
resonances may not be measur-
able by conventional means,
and are typically many dB
below the desired signal. But
the human ear/brain combina-
tion is extremely sensitive to
such signals. RMD
™
gives a
quality of sound and degree of
clarity that audiences find
breathtaking.
Ring-Mode Decoupling
(RMD
™
): Level-independent
fidelity
In typical speaker
systems, as the
overall sound
pressure level is increased —
such as during a musical
performance — the delayed
resonances increase propor-
tionally more than the primary
signal. This sends the sound
operator to the equalizers in
an attempt to "fix" the sound.
It is an ill-fated attempt since
changing the response of the
system cannot eliminate the
unpleasant resonances. RMD
™
suppresses acoustic and mechani-
cal resonances at their source.
DH6 large-format driver:
Exceptional HF detail
at all SPL’s
All three-way and
virtually every
two-way system
in the series use a new large-
format compression driver
with RMD
™
. The titanium
diaphragm of the DH6 has
increased internal strength and
damping for unprecedented
HF clarity and resistance to
mechanical fatigue at very high
sound levels. The reduced
diaphragm-to-phase-plug
spacing applies acoustic
damping and maintains output
in the 10– to 20-kHz range.
Rotatable HF horns:
Coverage flexibility
Nearly every
Xi-Series
™
system
has a rotatable
HF horn. It is designed so the
intended coverage angle can
be maintained for vertical and
horizontal box orientations.
(The 100° x 60° Xi-2123 and
Xi-1123 also have rotatable
mid-bass horns.)
Rigging: L-tracks with
8:1 safety factor
Xi-Series
™
systems
(with the excep-
tion of the ultra-
compact Xi-1082 under-
balcony) have dual L-tracks
top and bottom for two-point
suspension and aiming. The
L-track extrusions are tied
together by internal aluminum
bars which take the load
entirely away from the 13-ply
birch enclosures. As a result, a
safe and conservative suspen-
sion system is formed, one that
can be used with confidence.
Even in the largest
vertical arrays
recommended, an
8:1 safety factor is
maintained. The
L-tracks accept a
number of single-
and double-stud
fittings (see engineering data
sheets and Xi-Series
™
Flying
Manual*).
this brochure adds models particularly appro-
priate for high-performance fixed installations.
Included are two- and three-element line-array
configurations, which increase intelligibility
and clarity in reverberant spaces through
extended-frequency directivity control.
Suspension hardware and magnetics are
optimized for permanent installation or
portable applications of small-to-medium size.
The Xi-Series
™
also includes two-way systems in
a range of sizes and coverage patterns to
augment the performance of the main three-
*The user is responsible for deter-
mining the loads on all mechanical
components throughout the loud-
speaker array and for ensuring that the
working-load limits and resulting safety
factors are not exceeded.
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