Download For User Manual 2181

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Xi-2181/2181F

X-Array™ Install
Bass System

In the Xi-2181, 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 technique utilized and named by Electro-Voice to describe a process used to improve sound quality in loudspeaker systems. X-array™ install bass system. Read online or download PDF. Electro-Voice XI-2181 User Manual. Manuals Directory ManualsDir.com - online owner manuals library. Electro-Voice manuals. Accessories for music. Manual Electro-Voice XI-2181 User Manual. User Guides and Service Manuals. Miele G 1181, G 2181 User Manual. Size: 4.73 Mb. Next = Page 1 = 1 2 3. Operating Instructions.

• Unprecedented acoustic output in

a small, lightweight package

• Ring-Mode Decoupling (RMD)™

provides accurate transient detail

• EVX-180B woofers
• Unique rear-hinge rigging
• Flying and non flying configuration

Description

The X-Array

Install™ product line repre-

sents important advancements in concert-

sound-reinforcement technology. The design

goals called for the highest acoustic output

capability with the highest fidelity in light-

weight, compact enclosures that were easy

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to array. The development began with a clean

sheet of paper and took an integrated ap-

proach. The individual loudspeaker drivers,

horns, enclosures, rigging hardware and sys-

tem configurations were designed from the

ground up specifically for this high-perfor-

mance application.

The Xi-2181 is a manifolded, vented-box

bass system utilizing two 457-mm (18-in.)

woofers. The two woofers face each other

in a manifold chamber at the center of the

enclosure. This manifolding technique (U.S.

Patent Number 4,733,749) increases the

acoustic loading, resulting in increased low-

frequency efficiency (at slightly above box

tuning) and reduced distortion compared to

conventional direct-radiating designs. The

woofers were designed as part of the Xi-2181

development and represent a step forward

in state-of-the-art loudspeaker design in

terms of high acoustic output with low

distortion and low power compression.

Electro-Voice engineers developed a new

technology dubbed Ring-Mode Decoupling

(RMD

™

) to substantially improve clarity and

intelligibility by reducing both linear and

nonlinear resonance modes that color the

sound.

The low-frequency driver in the Xi-2181 is

the EVX-180B. An improved version of the

industry-standard EVX-180A high-excur-

sion 467-mm (18-in.) woofer that has dis-

tinguished itself as an industry standard for

high-power, low-frequency reproduction.

During the X-Array

™

development, the ther-

mal conduction of the motor was improved

and the suspension was redesigned, giving

the EVX-180B even lower power compres-

sion and a longer mechanical lifetime. In the

Xi-2181, the woofers are manifolded in a

vented enclosure optimized for maximized

output from 37-160 Hz with minimized dis-

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tortion.

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

™

of-

fers a solution to a very fundamental prob-

lem. It has long been recognized that two

different loudspeaker systems can sound dif-

ferent even though they both may be equal-

ized to have the same frequency response.

This difference is due to a variety of reso-

nances, or ring modes that color the sound.

Although this ringing may be very low in

level compared to the program material, it is

still audible. The source of these resonances

may be mechanical or acoustical in nature,

or a combination of both. In addition, they

may be linear or nonlinear, resulting in their

character changing with level. Furthermore,

these ring-modes may be aggravated when

multiple loudspeaker enclosures are as-

sembled into arrays. The result is a colora-

tion that decreases intelligibility and clarity,

with the nature of that coloration varying

with level. Often, the listener perceives that

coloration as imbalance in the frequency re-

sponse, and will attempt to electronically

adjust the system to restore the spectral bal-

ance. However this electronic equalization

has the negative effect of changing the pro-

gram material itself.

Ring-Mode Decoupling (RMD

™

) addresses

mechanical resonances with mechanical

solutions, and acoustical resonances with

acoustical solutions. In the Xi-2181 devel-

Photometric accuracy around ± 1% or more. Two line LCD, 24 characters per line and alpha numeric display modeBuy Stat Fax Models at a Nominal RateThe standard model of Awareness Stat Fax 2100 Microplate Reader is provided with four filters. Stat fax 2100 user manual pdf. 115V or 230V AC- 50-60Hz power requirements.

opment, RMD

™

was applied at every level –

to the individual low-frequency drivers, the

low-frequency enclosure chambers and the

interaction between multiple enclosures. The

design process included, for example, the

driver cone, suspension geometry and mate-

rials, enclosure geometry and materials, ab-

sorptive materials, etc. The result is a dra-

matic improvement in clarity and with a

much more neutral sound (a lack of colora-

tion) with the loudspeaker system maintain-

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Xi-2181 Bass System

600 Cecil Street, Buchanan, MI 49107

616/695-6831, 616/695-1304 Fax

Specifications

Frequency Response (measured in far
field, with and without crossover and
equalization, calculated to one meter on
axis, swept sine wave, one watt into
system - 2.00 V at 70 Hz, anechoic
environment; see Figure 2):

37-200 Hz

Crossover Frequency:

125 Hz

Efficiency Mid Band:

5.3 %

Maximum Long-Term-Average Power-
Handling Capacity (per ANSI/EIA RS-
426A 1980):

1,200 watts

Maximum Long-Term-Average Mid-
Band Acoustic Output, LF/HF:

64 acoustic watts

Sensitivity (SPL at one meter, indicated
input power, anechoic environment,
average level),

1 watt:

98.5 dB

1,200 watts:

129.3 dB

Beamwidth (angle included by 6-dB-
down points on polar responses,
indicated one-third-octave bands of pink
noise; see Figures 1 and 3),

Horizontal, 63-200 Hz:

240° (+120°, -60°)

Vertical, 63-200 Hz:

300° (+60°, -120°)

Directivity Factor, R

(Q), 63-200 Hz

Average (see Figure 4):

2.2 (+0.8, -0.4)

Directivity Index, D

, 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:

1.8%

80 Hz:

0.7%

Third Harmonic,

40 Hz:

0.3%

80 Hz:

0.1%

Transducer Complement,

Two EVX-180B 18-in. woofers

Impedance (see Figure 6),

Nominal:

Two 8-ohm loads

Minimum:

Two 6.0-ohm loads

Input Connections:

Two Neutrik NL8MPR Speakon

connectors paralleled

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Recommended Amplifier Power, Rating:

800 watts @ 8 ohms
(91-volts rms short term)

Enclosure Construction,

Enclosure Shell:

18-mm, 13-ply birch plywood

Finish:

Black textured paint

The drive gets hot quickly, and the enclosure doesn't have a vent. Other than that, like I said, very easy to use. I also don't recommend you use it for more than a couple minutes at a time. Nexstar cx 2.5 user manual instructions. I used mine just long enough to grab old files off and put new files on.

Grille:

Powder-coated steel with foam

Rigging:Heavy-duty L-track on top/

bottom which accepts New Haven
NH32102-2 double-stud fittings

Dimensions,

Height:

914 mm (36.00 in.)

Width (front):

584 mm (23.00 in.)

Width (back):

354 mm (13.93 in.)

Depth:

759 mm (29.88 in.)

Angle:

18° wedge

Net Weight: