ARX MSX48 User manual

MSX48 Owner's Manual v 1.1 CE ©2007 ARX® MSX48 Owner's Manual v 1.1 CE ©2007
ARX®
8
MSX48
ISO Transformer
Balanced
Microphone/Line
Splitter
OWNER’S
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’ssoleobligationunderthiswarrantyshallbetoprovide,withoutcharge,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 discon-
nected, 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 repack the unit, in its original packaging where possible, including 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
plenty
of 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.
4. 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 service that can track the package. Parcel Post is
not
recommended
If Warranty Registration Card is missing, please write to ARX in the country of pur-
chase, stating model and where purchased, or to ARX, PO Box 15, Moorabbin, Victoria
3189, Australia.
Or you can Email us at: [email protected]
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: [email protected]

MSX48 Owner's Manual v 1.1 CE ©2007 ARX® MSX48 Owner's Manual v 1.1 CE ©2007
ARX®
27
Specifications
This symbol is intended to alert you to the presence of important operating
instructions contained in this owner's manual
WARNING SYMBOLS USED ON THIS EQUIPMENT
IMPORTANT - PLEASE READ THIS FIRST
This is a passive transformer isolated device. It has no connection to AC power and has
no hazardous internal voltage.
However, it does contain very sensitive internal circuitry. The lid provides essential
shielding for sensitive components and should not be removed during use or any other
time.
The MSX48 has no user serviceable parts inside and should be returned to the manu-
facturer should servicing become necessary. Your warranty does not cover any damage
caused by modifications or service work performed by non authorised personnel. Refer
to the International Limited Warranty on Page 8 for more details
Complieswith89/336/EECEMCDirective,amend-
edby92/31/EECand93/68/EEC;meetsthefollow-
ing 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
InputImpedance 300 Ohms
OutputImpedance
2 secondaries @ 600 Ohms each
FrequencyResponse
30Hz - 20 KHz ± 1dB
Maximum Output Level +20dBm
THD at Max Output
0.2% 30 Hz - 20KHz @ 20dBm
InsertionLoss
0.5dB @ 1 KHz (600 Ohm source & load)
InputConnectors
3 pin female XLR, wired Pin 2 + Hot, Pin 3 – Cold
MainOutput
3 Pin male XLR, wired Pin 2 + Hot, Pin 3 – Cold
Monitor & Aux Output
3 pin male XLR wired Pin 2 + Hot, Pin 3 – Cold. Audio grounds not
connected; Pin 1 is floating.
Size 19”W x 5¼”H x 8”D
482 x 132 x 200 mm
Weight 13.5 lbs (6 Kg)
Complete online documentation is available on the ARX website:
www.arx.com.au/msx48.htm
Specific queries can be emailed to the factory at [email protected]
Our policy is one of continuous improvement, and therefore designs may
changewithoutnotice.However,unlessotherwisestated,specificationswill
alwaysequalorexceedthosepreviouslygiven.ARX®isaRegisteredTrade
MarkofARXSystemsPtyLtd.MSX48™isatrademarkorARXSystemsPty
Ltd. Any other names and trademarks are used for information purposes
only, and no other intent is either expressed or implied

MSX48 Owner's Manual v 1.1 CE ©2007 ARX® MSX48 Owner's Manual v 1.1 CE ©2007
ARX®
45
Rear Panel Connectors and Controls
• Numbered marker panel for labelling and confirming individual
channel assigns
• Balanced XLR Output splits Channels 1 through 16. Pin 3–-, Pin 2 +
Front Panel Connectors
• Balanced XLR Input Channels 1 through 16. Pin 3 –, Pin 2 +, Pin 1 Audio Ground.
All pins hard wired through to Main Outputs
• Balanced XLR Main (FOH) Output Channels 1 through 16. Same wiring as Input to
allow Phantom power to pass through to Main Outputs
• Duplicates of the Monitor and Aux splits on two sets of dual 25 pin D sub connectorsl,
wired to Tascam wiring protocol.
• Screw terminal Chassis Grounding point
• Balanced XLR Monitor Output Channels 1 through 16. Pin 3 –, Pin 2 +. Audio Ground is
floating (not Connected)
• Numbered marker panel for labelling individual channel assigns

MSX48 Owner's Manual v 1.1 CE ©2007 ARX® MSX48 Owner's Manual v 1.1 CE ©2007
ARX®
63
Introduction
Thank you for choosing this MSX48 Active Microphone/Line Splitter. As with all ARX
equipment, it has undergone extensive factory calibration and ‘burn in’ before shipping.
To ensure continued trouble free use, please familiarise yourself with the contents of this
manual before using the MSX48.
About the MSX48
The ARX MSX 48 Transformer isolated Microphone/Line Splitter has been developed to
deliver the performance required by the increasing complexity of today’s standards of
audio production.
The MSX 48 is a totally passive device requiring no power, and consists of Sixteen
channels of transformer isolated ultra low noise Microphone/Line Splitter. Each of these
channels has a direct looped Main/FOH feed, as well as a transformer isolated Monitor
split on the front panel.
On the rear panel is an Auxiliary transformer isolated split ideal for use with a remote
recording truck or TV feed. Duplicates of the Monitor and Aux splits are also provided on
two sets of dual 25 pin D sub connectors on the rear panel, wired to Tascam wiring
protocol.
Numbered marker panels on the front and rear provide a space where individual channel
connections can be noted.
The all-steel chassis of the MSX 48 provides strong interference resistant shielding.
Internally, state-of-the-art transformers deliver superb audio quality and total galvanic
isolation.
The MXS 48 is the easy answer to multi channel signal splitting requirements.
Connecting the MSX48
The original signal from the microphone is connected into the Input connector on the
frontpanel of the chosen channel. From there it can go any or all of the following:
1: To the main Front of House console out of the Main connector on the front panel
2: To the Monitor console (or a second Main console) out of the Monitor connector on the front
panel
3: To the rear panel split, for connection to remote trucks, OB vans, recording feeds, press
feeds, etc. The Monitor and Auxiliary feeds are fitted with isolating transformers for complete
signal and galvanic isolation.
The Input connector is hard wired to the Main output connector, so that Phantom power
can be passed through to condenser microphones, DI boxes, and similar items.
Naturally, normal care should be observed when making Phantom powered connections.
To avoid the risk of sudden large noises when plugging in, the console and system levels
should be pulled down.
Duplicates of the Monitor and Aux splits are also provided on two sets of dual 25 pin D
sub connectors on the rear panel, wired to Tascam wiring protocol. Connections should
be made to either the individual XLR connectors or the D sub connector - not both
There is no power to switch on or settings to adjust. The MSX48 is a true Plug and Play
device; simply make the correct connections and it will work.
It really is as straightforward as that!
TheMicrophone/LineSplittershallbeasixteenchannelunitinasteelchassiseightinches(200mm)
deepandthreerackunitshigh.
Eachchannelshallhaveitsinputandtwooutputsonthefrontpanelplusanauxiliaryoutputonthe
rear panel. The Input and the Main outputs shall be hard wired to allow Phantom power to pass
through.TheMonitorandAuxiliarychannelsshallbetransformerisolated.DuplicatesoftheMon-
itorandAuxsplitsshallbeprovidedontwosetsofdual25pinDsubconnectorsontherearpanel,
wiredtotheTascamwiringprotocol.
The Input headroom shall be 300 Ohms, and the frequency response shall be 30 Hz to 20 KHz,
±1dB.Insertionlossshallbe0.5dB@ 1 KHz with a 600Ohmsourceandload.
The Output impedance shall be 600 ohms transformer balanced on the Monitor and Auxiliary
outputs of each channel. The maximum Output level shall be +20dB. Total Harmonic Distortion
shallbe0.2%@ 20dBm, 30 Hz to20KHz.AudioGroundsshallnotbeconnected;Pin1shallbe
floating.
AchassisGroundscrew terminal shall beprovidedonthe rear panel.
TheTransformerBalanced Microphone/LineSplittershall be the ARXMSX48.
Architectural Specifications