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Xb Bass System

Xb Bass System

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leled with an Xb, allowing all eight conduc-

tors to be used with a single cable run to the

amplifiers. Note that, when two Xb systems

are jumped from one to another via the in-

put/output connections, the amplifier home

run cable will have two LF drivers on Pins 2

(for a 4-ohm load) and two LF drivers on

Pins 1 (for a 4-ohm load).

Flying the X-Array

 Systems

The X-Array™ loudspeaker systems all uti-

lize the same rigging hardware and have the

same structural strength ratings. Thus, dif-

ferent systems may be mixed in an array to

achieve the best acoustic results. The rigging

system allows for the smallest possible spac-

ing between adjacent enclosures, and  uti-

lizes quick-release rigging fittings for fast

installation and tear down.

When flown, the X-Array

 enclosures are

linked together by two removable hinges on

the rear of the enclosures at the top and bot-

tom. This arrangement enables the enclo-

sures to pivot vertically from the rear cor-

ners. The relative vertical angles between

adjacent enclosures is adjustable and set by

two removable rigging straps on the front of

the enclosures at the top and bottom. Both

the rear rigging hinges and the front rigging

straps are installed when enclosures are sit-

ting on top of one another. For ease of in-

stallation of the hinges and straps, the en-

closures self align using feet and cups

mounted on the top and bottom of the en-

closures. The relative horizontal angle be-

tween adjacent columns of loudspeakers is

set by adjustable grids at the top of the array

(or by custom-building attachment supports

in permanent-installation applications where

grids are not used).

The removable proprietary rear rigging

hinges utilize all-steel construction, and are

secured into a proprietary track assembly on

the enclosure (similar to the heavy-duty air-

craft L-track). The aluminum track is ex-

truded as a single-piece track/angle-bracket

aluminum assembly and ties into the top,

bottom and rear of the enclosure. Metal bars

inside the enclosure tie the top and bottom

track/angle-bracket assemblies together,

minimizing the load applied to the wooden

enclosure. The rear extrusion will accommo-

date the New Haven 32102-2 aircraft-type

double-stud locking fitting instead of the

hinge for applications requiring a lower

strength rating.

The removable, front strap assemblies uti-

lize all-steel standard New Haven 32102-2

aircraft-type double-stud locking fittings and

wire-rope and are secured into another pro-

prietary track similar to the heavy-duty air-

craft L-track. The track is extruded as a

single-piece track/angle-bracket assembly

that ties into the front and side of the enclo-

sure. The track/angle-bracket assembly ex-

tends from the top to the bottom of the en-

closure, eliminating the load applied to the

wooden enclosure.

A complete line of flying-hardware acces-

sories is available for the X-Array

 loud-

speaker systems including a grid, rigging

hinges and rigging straps. The variety of rig-

ging hinges and front rigging straps avail-

able include those for linking two enclosures

together, securing the top enclosure in a col-

umn to a and for picking up the top enclo-

sure in a column without a grid. Consult the

X-Array

 Accessories section for a complete

listing of the available rigging accessories.

The total weight of a column of X-Array

loudspeaker systems that may be supported

by the X-Array

 rigging system varies from

454-726 kg (1,000-1,600 lb) depending

on the rigging configuration details. An

X-Array

 Flying Manual is available from

Electro-Voice and is included with each

X-Array

 system shipment. The manual

should be consulted for complete struc-

tural specifications and detailed instruc-

tions for safely suspending and using the

X-Array

 systems.

Field Replacement

Normal service for the Xb requires only a

#2 Phillips screwdriver and a 3/16-inch hex-

key wrench. The drivers may be accessed as

follows:

LF:  First remove the grille, then remove the

screws securing the hatch on the front of the

enclosure. Remove the screws securing the

18-inch woofer and lift the driver out of the

enclosure. In the event of failure, the entire

woofer must be replaced.

The following service parts are available

from the service department in Buchanan,

Michigan USA:

LF #818-2883 EVX-180B complete driver

Architects’ and Engineers’

Specifications

The loudspeaker system shall be a two-

driver, manifolded, vented-box low-fre-

quency system with a frequency response

from 37-160 Hz. The loudspeaker system

also shall have two 457-mm (18-in.) low-

frequency woofers and each shall have an

8-ohm, 101-mm (4-in.) diameter voice coil

and a 600-watt power rating. The loud-

speaker shall have a rigging system en-

abling a column of loudspeakers to be

hinged at their back corners, with relative

downward angles set by adjustable rigging

straps at the front. The enclosure shall be

constructed of 18-mm thick, 13-ply birch

plywood, and shall be trapezoidal, forming

an 18° wedge and be 914 mm (36.00 in.)

high, 584 mm (23.00 in.) wide at the front,

365 mm (14.38 in.) wide at the back and 759

mm (29.88 in.) deep, and shall weigh 83 kg

(184 lb).

Rigging Accessories:

Grid:  This ATM Fly-Ware™ “T”–shaped,

all-steel-construction grid was specifically

designed as a single column of X-Array™

systems. Multiple grids can be linked to-

gether with couplers on front and back re-

tractable arms, the position of which sets the

splay angle between adjacent columns. Part

number MEGS-4000-T. ATM Fly-ware™,

2100 S. Wilmington Ave., Carson, CA 90810

USA, 310/834-5914

Xrhg Grid Hinge:  Two Xrhg grid rigging

hinges are used to attach the rear of the top

enclosure in a column to the rear of an

X-Array

 compatible grid. Each hinge con-

sists of two precision-machined steel rigging-

track fittings connected by an alloy-steel

chain. Part number 510-2999. Electro-Voice,

600 Cecil St., Buchanan, MI 49107 USA,

616/695-6831 or 800/234-6831

Xrhp Pickup Hinge:  Two Xrhp pickup rig-

ging hinges are used to create custom rig-

ging assemblies to attach to the rear of the

top enclosure in a column when an ATM grid

is not used. Each hinge consists of one pre-

cision-machined steel rigging-track fitting

with an alloy-steel chain. Part number

510-3000. Electro-Voice, 600 Cecil St.,

Buchanan, MI 49107 USA, 616/695-6831

or 800/234-6831

Summary of Contents for X-Array XB

Page 1: ...nsion was redesigned giving the EVX 180B even lower power compres sion and a longer mechanical lifetime In the Xb the woofers are manifolded in a vented enclosure optimized for maximized output from 37 160 Hz with minimized distortion Ring Mode Decoupling RMD is a tech nique utilized and named by Electro Voice to describe a process used to improve sound quality in loudspeaker systems RMD offers a ...

Page 2: ...d to be used with other X Array systems for a full range response as an active system that requires an active electronic crossover Both the Electro Voice Dx38 and Klark Teknik DN8000 digital crossovers are recommended for signal control See the Crossover Equalization and Signal Delay Controller section The Electro Voice P3000 amplifier is recom mended for powering the Xb See the Amplifier Recommen...

Page 3: ...ps avail able include those for linking two enclosures together securing the top enclosure in a col umn to a and for picking up the top enclo sure in a column without a grid Consult the X Array Accessories section for a complete listing of the available rigging accessories The total weight of a column of X Array loudspeaker systems that may be supported by the X Array rigging system varies from 45...

Page 4: ...a Ave Hollywood CA 90068 USA 213 850 5042 or ATM Fly ware 2100 S Wilmington Ave Carson CA 90810 USA 310 834 5914 Electronic Accessories Klark Teknik DN8000 Digital Controller The DN8000 digital electronic loudspeaker controller has a two in five out architecture with each output having programmable high pass and low pass filters four band equal ization signal delay compressor limiter and noise gat...

Page 5: ...tate Electro Voice Speakers and Speaker Sys tems are guaranteed against malfunction due to defects in materials or workmanship for a period of five 5 years from the date of origi nal purchase The Limited Warranty does not apply to burned voice coils or malfunc tions such as cone and or coil damage re sulting from improperly designed enclo sures Electro Voice active electronics asso ciated with the...

Page 6: ...was applied to the mid band of the low frequency section The sound pressure level was normalized for an equivalent one meter distance Figure 3 Beamwidth The beamwidth of the Xb i e the included horizontal and vertical coverage angles at the 6 dB points was measured with a full spherical measurement system as de scribed in Figure 1 DIRECTIVITY FACTOR R θ Q Without Crossover and EQ With Crossover an...

Page 7: ...tal electronic unit was used to provide the necessary crossover filters equalization and time de lay The sound pressure level was normal ized for an equivalent one meter distance Plots of second and third harmonic distor tion are shown referenced to the funda mental Figure 6 Impedance The impedance of each frequency band of the Xb was measured in an anechoic environment Figure 7 Wiring Diagram The...

Page 8: ...200 Hz Average see Figure 4 2 2 0 8 0 4 Directivity Index Di 63 200 Hz Average see Figure 4 3 4 dB 1 4 dB 0 9 dB Distortion 115 dB SPL at one meter shaped spectrum see Figure 5 Second Harmonic 40 Hz 2 2 80 Hz 0 9 Third Harmonic 40 Hz 0 4 80 Hz 0 2 Transducer Complement Two EVX 180B 18 in woofers Impedance see Figure 6 Nominal Two 8 ohm loads Minimum Two 6 4 ohm loads Input Connections Two Neutrik ...

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