Arx Di-plus 2 User manual

Using the DI-PLUS 2

TheDI-PLUS2isaDirectInjection,

or Direct, box. It is a self contained,

stand alone stereo unit designed to

interface a left and right pair of un-

balanced high impedance lines with

professional balanced low imped-

ance inputs. In other words, it will

convert ordinary signals into ones

thatarehappytotravel downalong

lineandmeetamixingconsoleatthe

other end. It has many applications

for Live Sound, Studio or Broadcast

use.

Typical uses are:

• Musical instruments - Keyboards,

synthesizers,electronicdrums,drum

machines

• Consumer audio products - CD

players, cassette decks, tape decks,

videocassette audio, computers.

Operating instructions

Power Requirements

The DI-PLUS 2 is an active device,

ie.itneedspowertorun.Thispower

canbe supplied 2 ways:

• Battery power.

TheDI-PLUS2hasprovisionfor 1x

9voltbatteryinternally.Togettothe

batterycompartment, unscrew the

knurled knurled captive bolt on the

rearpanel, and push the top partof

the chassis upwards. The battery

compartment will immediately be

visible. Remove the old battery, re-

placewith anew 9v alkalinebattery

andclosethe lid.Re-tightenthebolt

finger tight only.

To obtain warranty service for your DI-PLUS 2, call or write

to ARX or the dealer you purchased it from. They will give

youthecorrectaddresstosendyourunitto. Haveyoursales

receipt showing date of purchase handy, and include a copy

of it with your DI-PLUS 2. Pack the unit well - we are not

responsible fordamagecaused byunsuitable packingduring

shipment.Sendtheunittouspre-paid,byadeliveryservice

likeFedEx,UPS, orany otherservicethatcantracktheship-

ment. We will return it to you freight paid.

Ifyouhaveanyquestions,oranypart ofthisisunclear,please

write to ARX Systems in the country of purchase, or to the

addressbelow.

PO Box 15,Moorabbin, Victoria 3189, Australia.

Phone: +61 (0)3 9555 7859 Fax: +61 (0)3 9555 6747

Youcan also Email the factoryat:[email protected]

Page 7Page 6

Page 4 Page 5

ARX Systems (ARX) warrants to the first purchaser of this DI-PLUS

2 that it is free from defects in materials and workmanship under

normal use and service. ARX’s sole obligation under this warranty

shall be to provide, without charge, parts and labour necessary to

remedydefects,if any,whichappearwithintwelve (12)months from

date of purchase; and to supply parts only for the life of the product

to the original purchaser.

Thisisoursole warranty.Itdoesnotcoverfinishorappearanceitems,

nordoesit applyif theDI-PLUS2 hasbeen, inARX’ssolejudgement:

•Subjectedtomisuse,abuse,negligenceoraccident;

• Repaired,workedon,oralteredbypersonsnotauthorizedbyARX,

• Connected, installed, adjusted or used otherwise than in accord-

ance with the instructions supplied by ARX.

Thiswarrantygives you and us specific legal rights, andyoumay also

have other rights which can vary from state to state.

INTERNATIONAL LIFETIME WARRANTY

Max Input Level

+12 dB Phantom powered

+6 dB Battery powered

Input Impedance

1 Meg Ohm

Max Output Level

+17 dB 10K Ohm load Phantom powered

+12 dB 10K Ohm load Battery powered

+11 dB 600 Ohm load Phantom powered

+12 dB 600 Ohm load Battery powered

Output Impedance

680OhmsBalanced

Output Signal to Noise

-100 dB unweighted

-104 dB A weighted

Dynamic Range

117 dB 10K Ohm load Phantom powered

112 dB 10K Ohm load Battery powered

111 dB 600 Ohm load Phantom powered

107.5 dB 600 Ohm load Battery powered

Distortion

100 Hz .0018%

1KHz .0028%

10KHz .0056%

Frequency Response

20Hz to 20KHz, ± 0.2 dB

Gain through Unit

6dB (Pad switch out)

Pad Switch

Global-20dBattenuation

Input and Loop Out Connectors

Insulatedjack

Output Connectors

3 pin XLR. Wired Pin 1 Ground, Pin 2 +Hot, Pin 3 -

Cold. Global Audio Ground (Pin 1) lift switch

Construction

All-steelchassis, fibreglass PCB

Battery Access

Twistconnector openschassis, snap-in

batteryholder inside. No tools required

channel to the amplifier. Pushing the

Pad switch IN will reduce both input

levels by -20dB if required.

Note: If you are only using One

channelofthe DI-PLUS2,make sure

that you use Channel A. The

Channel A Input jack switches the

DI-PLUS2on.

SpecialNote.The DI-PLUS2isaLine

level device, so it is not designed to

accept Microphone level signals.

Output Connections

Connecta balanced microphone

lead from each 3 pin XLR connector

on the rear of the DI-PLUS 2 to a

pair of input channels on the mixing

console. Pan the channels Left or

Rightasrequired.

Pushing the Audio Ground Lift

switch IN will isolate both Pin 1

outputs of the DI-PLUS 2 to stop

GroundLoopsifrequired.

Specifications

As well as the DI Plus and the DI Plus2,

ARX manufacture a six channel rack

mountACpowered Directbox:

The DI-6s is a 19” 1 RU AC powered

unitthathas6 independentDirectboxes,

eachwithhighimpedanceInputandLoop

outjackconnectors, aooto+15dBlevel

control, clip LED, balanced XLR output

andindividualaudioground liftswitches.

Itcanalsofunctionasa 6into1linemixer

at the same time.

A switch on the rear changes it from a 6

into1mixertoa1 into6 linedistribution

splitter,eachsplit’slevelcontrolledbythe

sixindividualchannel controls.

Atrue ProAudiotoolbox!

Did you know...

Input Connections

A stereo high impedance source

(instrument,unbalancedlines or

similar)plugsintoInputs A and B

(typically Left to A and Right to B).

Ifthe signal needs monitoring, eg.

anonstageamplifier,then connect

a lead from the Loop Outs of each

That’s all there is to it. No tools, no

screwdriversrequired!

•Phantom power.

TheDI-PLUS2willalsorunonPhan-

tom power if available on the mix-

ing console. Switch the Phantom

power ON on the channel the DI-

PLUS2 is plugged into, and the Red

PhantompowerLEDwilllightupon

the DI-PLUS 2. This means the DI-

PLUS 2 is now running on the Phan-

tompower and the batteries aredis-

engaged. If you switch the Phantom

power off the DI-PLUS 2 will revert

to battery operation, although we

recommendusing Phantom Powerif

availableas it gives an approx 6dB in-

crease in overall headroom (see

Specifications, p 4).

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DI-PLUS 2

Dual Channel Active

Direct Box

Owner's Manual

Page 2

Thankyou forchoosingthis ARX DI-

PLUS2,amajorstepforwardinactive

directboxes. We hopeyou enjoy us-

ingthisuniqueproductasmuchaswe

enjoyed creating it. As with all ARX

equipment, it has undergone exten-

sive factory testing and ‘burn in’ be-

fore shipping. To ensure continued

trouble free use, please familiarise

yourself with the contents of this

manualbeforeusing.

Packagedinadualchannelstand-alone

format, the DI-PLUS 2 represents a

freshlookatactiveD.I.requirements.

• Precision engineered

Ultra quiet, ultra clean circuitry de-

liversmaximumheadroom whatever

the signal. Premium grade compo-

nents, plus an all-steel chassis gives

excellenthumandnoisespecifications

and superb audio quality in a tough,

roadworthypackage.

• Level control

The DI-PLUS 2 features dual high

impedanceunbalanced inputs on the

frontpanel,runningtobalancedXLR

outputs on the rear. A a global Pad

switch drops the input by a further

20dB, making it suitable for all

applications, from the softest

keyboard to the hottest broadcast

levels;andallin gloriousstereo!Plus,

the Left and Right channel Gains

match up perfectly for accurate

stereoimaging.

• Battery compartment

The revolutionary simple ‘clamshell’

actionofthe DI-PLUS2batterycom-

partment makes battery changing

extremely easy, even on the darkest

stages. A single 9v alkaline battery

snaps into a PCB mounted battery

holder for fast, secure location. No

fragilebattery clip leads to break,no

tools required, no screws to lose.

Productioncrewheaven!

• Automatic Phantom switching

The DI-PLUS 2 will automatically

switch itself to the console’s own

Phantom Power, if available, and an

LEDwillindicate thismode.Turnthe

Phantom Power off and it will

instantlyrevertbacktobatterymode.

• Rugged all-steel case

A lot of direct boxes are fitted into

brittle cast alloy cases. Not this one!

The tough all-steel inner and outer

chassis of the DI-PLUS 2 provide ex-

cellent RF/EMF shielding while

making it a sturdy, heavy duty unit

that is hard to dislodge, and hard to

leavebehind.

Whether you’re a Studio or Live

Soundengineer,installationcontrac-

tor,orbroadcastengineer, youwant

all the dynamics and clarity of the

original sound source transferred to

the mixing console.

The ARX DI-PLUS 2 provides a rug-

ged, no-compromise solution to all

direct injection and signal balancing

requirements.

•High Impedance Input Jacks

• Pad switch

• Loop out Jacks

• Balanced XLR output

connectors. Pin 3 – Cold, Pin

2 + Hot, Pin 1 Audio Ground.

• Audio Ground lift switch. Will

isolate Pin 1 when switched

• Battery check switch and

greenbattery status LED.

LED will light up when

switch is pressed if battery is

good

•Red Phantom power LED.

Will illuminate if DI-PLUS 2

detectsPhantom power.

Front Panel Connections

Rear Panel Connections

ARXARX

ARX Systems Pty Ltd, PO Box 15,

Moorabbin, Victoria 3189, Australia

PhonePhone

Phone: (03) 9555 7859 FaxFax

FaxFax

Fax: (03) 9555 6747

International FaxInternational Fax

International Fax: +61-3 -9555 6747

On the WebOn the Web

On the Web: www.arx.com.au

EmailEmail

Email: [email protected]

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