ARX DI-6SM User Manual

INTERNATIONAL LIMITED WARRANTY

ARX Systems (ARX) warrants to the first purchaser of any ARX equipment 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 remedy defects, if any, which appear within twelve (12) months from date
of purchase, and for a further twelve (12) months supply parts only.

This is our only warranty. It does not cover finish or appearance items, burned voice
coils, or if the equipment has been, in ARX’s sole judgement:

•Subjected to misuse, abuse, negligence or accident;

•Repaired, worked on, or altered by persons not authorized by ARX;

•Connected, installed, adjusted or used for a purpose other than that for which it was
designed. This includes running a speaker system with the ISC leads disconnected, or
with a non-ARX crossover, or with the wrong processor.

This warranty gives you and us specific legal rights and you may also have other rights
which may apply.

Warranty Service Procedure

Should it become necessary to have your equipment serviced under the terms
of the warranty, please follow these steps:

1. Call your ARX distributor for a Return Authorization (RA) number;

2.

Carefully

a note with a description of the problem, and a copy of the receipt showing
date of purchase. Attach these to the actual unit itself. Don’t forget to write
your name and address clearly, and include a phone number where you can
be contacted during normal business hours. Make it easy for our service
technicians to contact you if they have a question. Also, use
packing material - better to be safe than sorry .

3. Send the unit freight prepaid to ARX Systems, at the address given you with
your RA number. We will pay the return freight when the serviced unit is
returned to you.

We strongly recommend you insure the package. We can’t fix it if it gets lost!
Send it by UPS, Fedex, DHL or any similar parcel service that can track the
package. Parcel Post is

If Warranty Registration Card is missing, please write to ARX in the country of
purchase, stating model and where purchased, or to ARX, PO Box 15, Moorab­bin, Victoria 3189, Australia.

Or you can Email us at: [e-mail]

repack the unit, in its original packaging where possible, including

plenty

of

not

recommended

DI-6SM

OWNER ’S

MANUAL

ARX Systems Pty Ltd, PO Box 15,

Moorabbin, Victoria 3189, Australia

Phone: [phone] Fax: [phone]

International Fax: [phone]

On the Web: www.arx.com.au

Email: [e-mail]

DI-6SM Owner's Manual v 1.1 CE ©2006 ARX®DI-6SM Owner's Manual v 1.1 CE ©2006 ARX®8

IMPORTANT - PLEASE READ THIS FIRST

This is a dual voltage unit. It is essential that you check that the voltage
on the fuseholder cover below the AC connector on the rear of the chassis
is set correctly before connecting it to AC power.

THIS IS SET FOR

100 V AC TO 120 V

AC OPERATION

To change, pull fuseholder out and rotate 180o, then push in again. Do not
insert power cable into unit until voltage has been correctly set. Do not plug
power cable into AC power until voltage has been correctly set

WARNING SYMBOLS USED ON THIS EQUIPMENT

This symbol is intended to alert you to the presence of important
operating instructions contained in this owner's manual

This symbol is intended to alert you to the presence of uninsulated
dangerous voltage within the product's enclosure that may be of
sufficient magnitude to constitute a risk of electric shock.

This symbol indicates that a Slow Blow fuse is used in this equip­ment. Replace with same type and value only

THIS IS SET FOR

220 V AC TO 240 V

AC OPERATION

Complies with 89/336/EEC EMC Directive,
amended by 92/31/EEC and 93/68/EEC and
meets the following standards:EN 55013 : 1990,
Sections 3.2 and 3.5 EN 55020 : 1988, Sec­tions 4.3, 5.4, 6.2, 7.0, 8.0.
Complies with Australian Standard AS/N25
1053

Specifications

Channels 1 - 6

Input Impedance 2 MegOhm
Input Headroom +21 dB
Output Signal/Noise -98 dB Unweighted

-104 dB A weighted

@ unity gain
Output Level (Max) +26 dB
Dynamic Range 124 dB
Frequency Response 20 Hz to 20 KHz -0.5dB
Distortion (@ unity gain) 100 Hz .004%

1 KHz .003%

10 KHz .005%
Input/OutputConnector Type Jack
Balanced Output Type XLR

Master Section

Output Signal/Noise All Inputs at unity, Master at unity

-90 dB unweighted

-96 dB A weighted
Output Level (Max) +26 dB
Output Impedance 600 ohms
Distortion .006% @ 1 KHz, unity gain
Output Connector Type Jack (on front) and XLR (on rear)

Splitter Input

Maximum Level +20 dB
Input Impedance Line - 20 Kohms Balanced

Mic - 5 KOhms Balanced
Input Connector Type XLR
Power Requirements 100/110 or 220/240V AC 50/60 Hz

8 Watts (8 VA)
Weight 5 lb/2.2 Kg
Dimensions 19"W x 1¾"H x 6"D

482 x 44 x 155 mm

DI-6SM Owner's Manual v 1.1 CE ©2006 ARX®DI-6SM Owner's Manual v 1.1 CE ©2006 ARX®2 7

Front Panel Controls

• Unbalanced Hi Z insulated phone jack Input socket

• Unbalanced Hi Z insulated phone jack Output socket

• Channel Level control; from oo through 0 dB to +15 dB

• Channel clipping indicator LED

• Numbered marker panel for labelling DI assigns. Use grease pencil or
Chinagraph type only. Do not use felt tip pens as these may permanently
stain your front panel.

• Master Mix level control

• Balanced jack Master Mix output

• DI, Splitter and Phantom status LEDs

Rear Panel Connectors

• Channels 1 - 6 Balanced Output. Pin 2 + Hot, Pin 3 - Cold, Pin 1 Ground

• Channels 1 - 6 audio Ground lift switch

• Ground lift LED indicators

• XLR Balanced Master output. Pin 2 + Hot, Pin 3 - Cold, Pin 1 Ground

• DI or Splitter mode function switch

DI-6SM Application Notes

Setting up your DI-6

SM is very straightforward. It will accept virtually all High

Impedance (Hi Z) and Low Impedance (Lo Z) Unbalanced lines and convert them to
Electronically Balanced Low Impedance (Lo Z) lines, suitable for all professional
audio applications. Simply choose a channel on the front, and turn the Gain control
hard Left. Plug your line into the Input, and your XLR lead into the corresponding
Output on the rear. Turn the channel Gain control up until the required output level
is reached. 0dB or Unity Gain is marked on the Gain control at approximately 1
o’clock.

To reduce the signal level, turn to the Left; to increase it turn to the Right, up to a
maximum of +15dB. The Clip LED will light up if any part of the circuitry is being
overloaded. If this occurs, reduce the Input level until it stops. Use the audio Earth/

• Microphone or Line Input select

• XLR Balanced Input for Splitter mode. Pin 2 + Hot, Pin 3 - Cold, Pin 1 Ground

• Mic/Line Loop Output

• Mic/Line Splitter Input Gain

• Phantom Power Switch

• IEC connector witchable 100/110 or 220/240V AC, with integral fuse. Replace with

correct value only

Ground lift switch next to each Output to eliminate Ground loop hum if necessary.
If the Input signal needs to continue on to a musician’s individual amplifier, for

example Bass or Keyboards, insert a lead into the channel Output on the front panel
and run it to the amp.

The DI-6

SM also has a Mix function. This is especially useful for today’s multiple

keyboards, drum machine, music computer set ups. Up to 6 individual components
can be plugged into the DI-6

SM, and individual balanced lines can be run down to

the main console. A summed mix of these can be sent out to either the monitor
console via the Master Balanced Output, or to the musician’s personal amp via the
Master Unbalanced Output, or both if you wish.

However if you are running short of channels to the main console, this summed mix

DI-6SM Owner's Manual v 1.1 CE ©2006 ARX®DI-6SM Owner's Manual v 1.1 CE ©2006 ARX®4

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can be sent to the main console and the musician can balance the mix to their own
taste.

A further advantage of the DI-6

SM for multi keyboard use is that the whole stage

setup can be used unchanged at rehearsal or in the studio.
The Splitter function available on the DI-6

SM enables a single Microphone or Line

Input signal to be split to up to 6 Outputs. The level of each Output is controlled
individually by the front panel Gain controls, with the Master Level control acting as
an overall level setter.

To get into Splitter mode on the DI-6

SM, first turn down all level controls on the

front panel, then select Splitter on the rear panel switch, then Mic or Line, and plug a
lead into the Balanced XLR Splitter Input on the rear panel. An LED will light up on
the front panel to indicate Splitter mode. The tick mark on the Input Gain control
indicates a typical microphone gain setting. Bring up the Master level control first,
then each individual level control until you have the levels you require. If the Signal
needs to continue on to another piece of equipment, connect a lead from The Loop
Output XLR connector adjacent to the Splitter Input.

Phantom power for condenser microphones is available by pressing the Phantom
Power switch on the rear.

!!! TURN DOWN THE MASTER MIX LEVEL CONTROL BEFORE SWITCHING PHANTOM
POWER ON !!!

The DI-6

SM is also ideal as a -10 dB to +4 dB level matcher for consumer audio

products, home studio equipment, and Video Audio in discos and clubs.
In Radio and TV broadcast work the DI-6

SM is a must in any remote truck, OB van or

mixing suite, being easily and quietly able to deliver the +8 dB or greater line levels
that are common to the industry. It will do this in Direct Injection mode, Line mixer
mode or Splitter mode.

In short, the ARX DI-6

SM is a truly unique audio problem solver for all facets of the

audio industry, from Broadcast and Studio work through to Discos, Clubs and
Concert sound.

Being AC mains powered the DI-6

SM has no batteries to go flat, nor does it require

Phantom Power. However, many mixing consoles have Phantom Power available to
all channels or none, or to blocks of channels. If this is the case, then the DI-6

SM will

quite happily accept Phantom Power.

Special Note

Just two things the DI-6
Apart from the Input to the Splitter function, the DI-6

SM won’t do:

SM is a Line Mixer, so it won’t

accept Microphone level signals into the front unbalanced inputs, and it won’t accept
speaker lines, so don’t plug the output of an amplifier into it.

Introduction

Thank you for choosing this ARX DI-6SM. We hope you enjoy using this unique
product as much as we enjoyed creating it. As with all ARX equipment, it has
undergone extensive factory testing and ‘burn in’ before shipping. To ensure
continued trouble free use, please familiarise yourself with the contents of this
manual before using.

About the DI-6SM

It’s a fact of audio life that a lot of equipment that has to be connected to profes­sional audio systems isn’t impedance or level compatible.

Most consumer oriented audio products have unbalanced outputs, whereas Balanced
Low Impedance (Low Z) is the norm in pro audio. CDs, DVDs, Tape/cassette decks,
Video audio, drum machines, synthesizers, guitars, computers; at some stage all
these need linking up to balanced inputs, whether the application is Live sound,
Studio or Broadcast.

Recognising this fact, ARX have developed the DI-6SM - Six active D.I. (Direct
Injection) units, plus a 6 into 1 Line Mixer, plus a 1 into 6 Mic or Line Splitter, and all
in a compact one rack unit package!

This unique and flexible audio problem solver allows Six independent unbalanced
audio sources (keyboards, instruments, tape decks etc.) to easily and quietly inter­face with balanced pro audio systems; to individual channels or summed down to
one Master output, or will split a single incoming Mic or Line signal to 6 Outputs.

Despite the compact size of the DI-6SM, it’s not short of features. Each channel has
2 phone jack IN/OUT sockets, level control from infinity (off) through 0 dB to + 15
dB gain, plus a clipping indicator LED. The Master section has a Master volume
control and status LEDs indicating whether the unit is in DI or Splitter mode. In
addition, as on all ARX single rack unit equipment, there is a numbered marker panel
you can write on for easy confirmation of channel assigns.

On the rear, each channel has an XLR Balanced Output, Ground lift switch and
indicator LED. The Master section has both balanced XLR and Jack outputs. In
addition there is an XLR Balanced Input and switch to put the unit in either DI or
Splitter mode.

DI-6SM Owner's Manual v 1.1 CE ©2006 ARX®DI-6SM Owner's Manual v 1.1 CE ©2006 ARX®6

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