To obtain warranty service for your Audibox, call, write, or Email to ARX or
the dealer you purchased it from. They will give you the correct address to
send your unit to. Have your sales receipt showing date of purchase handy,
and include a copy of it with your Audibox. Please pack the unit well - we
are not responsible for any damage caused by unsuitable packing during
shipment. Send the unit to us pre-paid, by a delivery service like FedEx,
UPS, or any other service that can track the shipment. We will return it to
you freight paid. If you have any questions, or any part of this is unclear,
please write to ARX Systems in the country of purchase, or to the address
below.
PO Box 15,Moorabbin, Victoria 3189, Australia. Phone: +61 (0)3 9555 7859
Fax: +61 (0)3 9555 6747
You can Email the factory at:
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ARX Systems (ARX) warrants to the first purchaser of this Audibox
product that it is free from defects in materials and workmanship
under normal use and service. ARX’s sole obligation under this war-
ranty shall be to provide, without charge, parts and labour neces-
sary to remedy defects, if any, which appear within twelve (12)
months from date of purchase; and to supply parts only for the life
of the product to the original purchaser. ARX shall not be responsi-
ble for parts that have been discontinued by the original manufac-
turer
This is our only warranty. It does not cover finish or appearance
items, nor does it apply if the Audibox has been, in ARX’s sole judge-
ment:
• Subjected to misuse, abuse, negligence or accident;
• Repaired, worked on, or altered by persons not authorized by ARX,
• Connected, installed, adjusted or used otherwise than in accord-
ance with the instructions supplied by ARX.
This warranty gives you and us specific legal rights, and you may also
have other rights which can vary from state to state.
INTERNATIONAL LIFETIME WARRANTY
As well as the
DI Pre
, ARX manu-
facture other products in the unique
Audibox range:
The
ISO-Balancer
for balancing
unbalanced signals, and also the
ISO
De-Balancer
, which will de-bal-
ance a signal when required to con-
nect to an unbalanced input.
The
ISO-Later
is a Dual channel
Unbalanced to Balanced Low Im-
pedance transformer isolated con-
verter, and the
ISO Splitter
is a
transformer isolated 1 input to 2
outputs splitter for splitting 1 input
2 ways in applications where com-
plete Galvanic isolation is required.
Both available in Single Channel or
Double Header format.
The
Ear Driver
is a Headphone
Amplifier with 2 pairs of Stereo in-
puts each feeding two channels of
headphone level outputs. It has in-
dividual Level controls plus a 12 -
15VDC power connector. A com-
pact, flexible unit
The
AV-DI
is a Stereo AudioVisual
Active Direct box, with dual RCA
or stereo mini jack input and dual
XLR outputs. Ideal for interfacing
consumer audio (especially compu-
Did you know...
ter sound cards) with professional
systems.
Other
AV-DI
features include full-
time soft audio ground, –20dB Pad,
plus Phantom or DC power options.
Available in Dual Channel format only
The
Pro DI
is an ultra compact Ac-
tive Direct box, with normal High Im-
pedance input as well as a separate
speaker level input for connection to
instrument amplifiers.
Other features include –20dB Pad
and Audio Ground Lift switches, plus
Phantom or DC power options.
Available in Single Channel or Dou-
ble Header format
For the latest information on the
complete Audibox range, visit our
website:
www.arx.com.au/audibox.htm
Using your Audibox
The DI Pre is a Single or Dual Chan-
nel Microphone Pre amplifier. It is a
self contained, stand alone single or
dual channel unit designed to bring
the ultra low signallevel of a micro-
phone up to Line level. It has many
DI Pre Specifications
Mic Input Impedance
2 K Ohms Balanced
Phantom Power Voltage
Switchable on XLR Pins 2 and 3
Input Gain
+10 dB Minimum, variable to +60 dB Maximum
Pad Switch
-20 dB attenuation
Overload
Measured at all Gain points throughout the circuitry
Output Noise
(Measured with Gain nominal 20 dB)
-90 dB Unweighted, -97 dB 'A' weighted
Frequency Response
20 - 20 KHz ± 0.25 dB
Distortion
(Measured with Mic Gain @ 20 dB)
100 Hz 0.0085%, 1 KHz 0.008%, 10 KHz 0.0083%
Input Connector
Balanced 3 pin female XLR type. Wired Pin 1
Audio Ground, Pin 2 + Hot, Pin 3 – Cold
Output Connector
Insulated Tip Ring Sleeve balanced jack
Construction
All-steel powdercoated chassis, fibreglass PCB
The DI Pre Duo (Dual channel model) has identical specifications for
each channel
are bringing the signal into. If you
have a condenser mic needing Phan-
tom power, press the phantom
switch IN. If it is a dynamic Mic, then
don’t. If you are unsure of what type
you have, here’s the rule:
If it works
OK without Phantom power, then
it’s a dynamic microphone
Set the DI Pre
Input Gain at 20 - 30
dB as a starting point, then try the
traditional sound engineer’s “Check
1 - 2” into the microphone, and
watch the Clip LED on the front of
the DI Pre. If it lights up, reduce the
Input Gain. If the levels are still too
high, then push the 20dB Pad switch
In on the front panel. You may have
to bring the Gain back up a little to
compensate for this. It’s a matter of
trial and error initially, until you are
used to the interaction between the
DI Pre
,
microphone, and the Line
input the DI Pre is plugged into.
Different microphones will require
different Input Gain settings, as will
singers with louder and softer
voices, and louder and softer instru-
ments. It’s a good idea to create a
list of different settings that you can
refer back to when you need to.
applications for Live Sound, Studio or
Broadcast use.
Operating instructions
Connect the microphone to the bal-
anced XLR Input of the DI Pre, and
connect a cable from the Output jack
to the Line Input jack of whatever you
Power Requirements
The DI Pre is an active device,
ie.
it
needs power to run. This power can
be supplied an External 12 - 15 V DC
power:
The DI Pre has a DC input connector
for running the unit on an external 12
- 15 V DC power supply. Any 12V DC
wall connector capable of supplying
200 mAmps will work, although for
greatest headroom we recommend
the Audibox PSU which can supply 15
V DC to multiple Audibox devices.
Note the wiring of the connector: the
outer sleeve is –, the inner is +.
