Arx Ec-2 User manual

ECEC

EC-2-2

-2-2

-2

The ARX EC-2 is a flexible, affordable 24

dB per octave Phase Correct electronic

crossover.

It has 2 modes of operation; as either a

Stereo 2 way or a Mono 3 way unit, with a

switch on the back panel selecting either

mode.

• Tamper-Proof Crossover Points

The crossover points are determined in-

ternally by the value of 4 resistors per

channel; changing the resistor value

changes the crossover point. This ‘semi

fixed’ method avoids the pitfalls of exter-

nallyadjustedcrossoverpoints,makingthe

crossover points tamper-proof once they

areset.

Asahandyguide, a list of common cross-

overpointsandtheircorresponding resis-

tor values are printed inside the unit's lid,

and also set out in the Owner's Manual.

On the front panel are level controls for

Lowand Highindual channel2way mode,

and Low, Mid and High in single channel

3 way mode, with corresponding Outputs

on the rear panel.

• Balanced Inputs and Outputs

TheEC-2BalancedInputs and outputs on

XLR connectors. It also has an additional

summed Mono Low output, for applica-

tionsthatneedaMonoLow feed (e.g. Left

andRightfull-rangeplusasingleSub Bass

speaker).

• High Pass Filter

There is a preset 30 Hz HighPass filter to

remove unwanted subsonics which can

damage speakers and waste amplifier

power.

Inaddition, each output has upto +6 dB

ofgainavailable,tocompensateforam-

plifiers and speakers of differing sensi-

tivities.

• Universal AC Power

AC power range is a universal 100 to

120Vor220to240VAC,and is connect-

ed to the unit via a standard IEC con-

nector, with built-in fuse and voltage

changeswitch.

• Uncompromising Audio Quality

Innovativecircuitdesignispointless un-

less it delivers stunning sound quality,

and here the EC-2 excels. It has been

designedtoprovideuncompromising au-

dio quality, and to achieve this, Linkwitz

Riley24dB(FourthOrder)statevariable

filters are used throughout the circuitry.

This ensures a smooth Phase Correct

transitionthrough the crossover region.

FromStage Monitors toStudioMonitors,

fromFrontofHousetothe Front room of

yourHouse,the EC-2 is acrossoverthat

issuitedtoanyapplicationrequiringflaw-

less,transparentsound.

Stereo 2 way, Mono 3 way

24dB Electronic Crossover

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Ultra low noise

circuitry

Totally phase

aligned at crosso-

ver point

Switchable Dual

Channel 2 way or

Single Channel 3

way

Unique 'semi-fixed'

crossover point

24dB per octave

(Fourth Order)

Linkwitz-Riley

filters

Separate Summed

Mono Output for

Satellite/Sub

systems

Balanced Inputs,

and Outputs

Built in High Pass

filters

Intuitive, 'user

friendly' layout

Flawless perform-

ance in any audio

environment

Security cover

available

Input Impedance

Balanced 20Kohms

Unbalanced10Kohms

Input Headroom

+ 21 dB

CMRR

>45 dB, 20 Hz—20 KHz

Output Impedance

Balanced300ohms

Unbalanced150ohms

Output Level (Max)

+21dB

Frequency Response

30Hz—20KHz±0.5dB

Note: 30 Hz is a function

of the High Pass filter

Signal to Noise ratio

(Controls at Unity)

-90dB Unweighted

-93dB ‘A’weighted

Distortion

.004%THD,0dB,1KHz

Dynamic Range

111dB

Power Requirements

100/120V AC

220/240V AC

Weight

5lbs/2.2 Kg

Dimensions

19"W x 13/4"H x 6"D

482 x 44 x 155mm

Input Connector type

XLR,BalancedJack

Output Connector type

XLR

Crossover point frequencies

are changed internally by

varying the value of 4 resis-

tors per channel. Full details

are in the Service Notes sec-

tion of the Owner's Manu-

al, and are also printed in-

side the lid.

• Balanced XLR Inputs and Outputs

• Additionalsummed mono Low output

• 2 way/3 way mode switch

• Low and High Output controls for 2 way mode

• Low, Mid and High Output controls for 3 way

mode

The crossover shall be a dual channel 2 way

or single channel 3 way unit in a steel chas-

sis six inches deep and one rack unit high.

There shall be a rear panel switch to put

the unit into either mode. The crossover

shall have true Linkwitz Riley 24 dB per oc-

tave, phase corrected state variable filters.

The front panel shall feature controls for

Low and High frequencies in dual channel

mode, and Low, Mid and High frequencies

in single channel mode.

Thereshall becorresponding outputson the

rear panel, plus a separate mono low fre-

quency summed output. Each output will

have up to +6dB of gain available, to com-

pensate for amplifiers and speakers of dif-

fering sensitivities. There shall also be a pre-

set 30 Hz High Pass filter to remove unwant-

ed subsonics.

The unit shall have electronically Balanced

inputs, on TipRingSleeve (TRS) jack connec-

tors (Tip +, Ring -, Sleeve Ground), and XLR

connectors, with passive RFI filters and an

Input impedance of 20 Kohms (10 Kohms

unbalanced). The Outputs shall also be Bal-

anced, on XLR connectors, with an output

impedance of 300 ohms balanced (150 ohms

unbalanced),

The Input headroom shall be +21dB, with a

CMRR of better than 50dB, and the frequen-

cy response shall be 30 Hz, -0.5dB (as a func-

tion of the High Pass filter) to 20 KHz,

+0.16dB, and the maximumOutputlevel shall

be +21dB, with a Signal to Noise ratio of -

93dB ‘A’ weighted (-90dB unweighted).

Total Harmonic Distortion shall be .004% @

0dB, 1 KHz, and the unit shall have a dynam-

ic range of 111dB.

AC Power shall be supplied via a removable

mains cable, connecting to an IEC connector

with an integral fuse and voltage change

switch on the unit’s rear panel.

The crossover shall be the ARX EC-2

• Markerpanels for labellingcrossover assigns

• 2 way/3 way status LEDs

Our policy is one of continuous im-

provement, and therefore designs

maychangewithoutnotice.Howev-

er, unless otherwise stated, specifi-

cations will always equal or exceed

thosepreviouslygiven.

• AC input connector, with voltage switch and

fuse.

ARX Systems are based in Melbourne, Australia, where all ARX Products are assem-

bled and tested in our ‘state-of-the-art’ manufacturing facility

For over 20 years ARX has designed, manufactured and supported Audio Products for

Professional users and applications worldwide

ARX Systems Pty Ltd; PO Box 15, Moorabbin, Victoria 3189, Australia

Phone: 03 9555 7859 Fax: 03 9555 6747 International Fax +61 3 9555 6747

Email: [email protected] Internet: www.arx.com.au

Specificationsavailable onCD ROM

Latestupdates always available onthe ARX website - www.arx.com.au

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