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X-Array Install
power tests which push the performance
boundaries of the loudspeakers are also
performed for an extra measure of reliabil-
ity. The Xi-2123/106 systems are rated per
ANSI/EIA RS426-A 1980 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.
The DN8000 digital electronic unit was
used to provide the necessary crossover
filters and equalization during power test-
ing. Specifically, the Xi-2123/106 passes the
ANSI/EIA RS426-A power test with the
following test parameters:
Low-Frequency Section:
P
:
E(MAX)
Test Voltages:
R
(1.15 R
):
SR
E
Mid-bass Section:
P
:
E(MAX)
Test Voltages:
R
(1.15 R
):
SR
E
High-Frequency Section:
P
:
E(MAX)
Test Voltages:
R
(1.15 R
):
SR
E
Biamplifying, Crossover, Equalization
And Time-Delay Controller
The Xi-2123/106 speaker system and vari-
ants are designed as an integrated pack-
age that utilizes the Merlin ISP-100, Klark
Teknik DN8000 or Electro-Voice Dx34A digi-
tal crossover system. Optimal performance
of the Xi-2123/106 speaker system can only
be assured when using the above control-
lers. The systems may be biamplified by
removing the input panel and switching a
6-pin molex connector. Separate presets
are available for the biamplified mode.
Electrical Connection And System
Wiring
Electrical connections to the Xi-2123/106
are made on the back of the enclosure via
an 8-pin connector. There are two connec-
2
TM
Xi-2123/106 Loudspeaker System
tors on the input panel to allow paralleling
of other Xi-2123/106 systems. The Neutrik
Speakon
nections. The pin assignments are as fol-
lows:
The wiring diagram of the loudspeaker sys-
tem is shown in figure 7. The electrical im-
pedance is shown in Figure 6.
Amplifier Recommendations
Power amplifiers with the following rat-
ings are recommended for use with the
Xi-2123/106 speaker systems:
LF: 600 watts per channel into 8 ohms.
600 watts
MB: 600 watts per channel into 8 ohms.
47.0 volts rms
HF: 600 watts per channel into 8 ohms.
94.0 volts peak
Xi-2123/106 speakers may be paralleled
3.68 ohms
only with other Xi-2123/106 speakers if the
amplifier is capable of delivering full power
300 watts
at the lower impedances. The use of am-
45.5 volts rms
plifiers with lower power ratings is accept-
91 volts peak
able; however, the full-power capabilities
6.9 ohms
of the Xi speakers will not be realized. The
use of amplifiers with significantly higher
power ratings will generate maximum dy-
75 watts
namic range and fidelity, but care must be
30.1 volts rms
utilized for longer duration signals as me-
60.2 volts peak
chanical and thermal damage is possible in
12.1 ohms
the system.
Flying the Xi Systems
A manual entitled the X-Array Install™
Flying Manual is available from Electro-
Voice, and is included with each flying Xi
loudspeaker system. A brief introductory
overview is included here. The X-Array In-
stall™ Flying Manual should be con-
sulted for complete structural specifications
and detailed information on safely sus-
pending and using the Xi systems.
The Xi systems incorporate a unique two-
point flying system that permits a wide range
of vertical angle adjustment, and offers maxi-
mum flexibility in array design for both tour-
ing sound and permanent installations. The
quick-release, aircraft-rated heavy-duty L-
track-type hardware design allows arrays of
loudspeakers to be assembled (and disas-
sembled) very quickly, and offers such flex-
®
NL8MPR is used for both con-
HF:
Pin 4 In / Pins 4 Out
MB:
Pin 3 In / Pins 3 Out
LF:
Pin 1 In / Pins 2 Out
ibility in the vertical angling of cabinets
that pull-up points are usually unneces-
sary. Furthermore, all of the flying Xi loud-
speaker models include the same rigging
hardware, allowing different models to be
mixed as necessary throughout an array.
The working-load limit (for an 8:1 safety
factor) for each rigging point on the Xi loud-
speaker enclosure is 227 kg (500 lb) for a 0°
pull angle and 170 kg (375 lb) for a 90° pull
angle when used with the New Haven
NH32101-2 double-stud fitting, and 113 kg
(250 lb) at any angle when used with the
New Haven NH8192-2S or Ancra 42546-10
single-stud fittings with locking pins. The
working-load limit (for an 8:1 safety fac-
tor) for the overall enclosure is 340 kg
(750 lb). (Consult the X-Array Install™
Flying Manual for specific structural rat-
ings and limitations.) The enclosures may
be oriented with the rigging track on the
sides of the enclosure, or on the top and
bottom, and may be daisy-chained together
as long as the safety factor is 8:1 or greater,
and local regulations are met. For fire safety
and additional structural strength in both
flying orientations, top-to-bottom and side-
to-side metal straps link the rigging track
inside the enclosure.
All associated rig-
ging is the responsibility of others.
CAUTION: The Xi loudspeaker system
should be suspended overhead only in ac-
cordance with the procedures and limita-
tions specified in the X-Array Install™ Fly-
ing Manual and manual updates notices.
Field Replacment
Normal service for the Xi requires only a #2
Phillips screwdriver and a 3/16-inch hexkey
wrench. The drivers may be accessed as fol-
lows:
HF: First remove the grille, then remove
the nine screws securing the front flange
of the high-frequency horn. Lift the horn
and driver out of the wood assembly. In
the event of failure, the diaphragm assem-
bly can be replaced with the driver attached
to the horn.
MB: First remove the grille, then remove
the sixteen screws securing the front flange
of the midbass horn and lift the horn out.
Remove the four screws securing the phase
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