ARX 8-pre User manual

8 CHANNEL MICROPHONE PREAMP
Innovation
If you love your compact Digital (or Ana-
log) mixing console, but wish it had more
microphoneinputs,ARXhasthesolution–
the8 pre: eight channels ofsuperbsound-
ing Microphone Pre-amps in a compact 1
RUchassis.It’sthe ideal console extender
for those times when you need more mi-
crophone inputs. Now you can put those
unused line inputs to good use, and who
knows-the 8 pre pre-amps soundsogood
you’ll probably end up using them all the
timeinsteadofthe onesthatcamewithyour
mixer!
Superb Audio Quality
The 8 pre’s ultra low noise figures come
from extensive use of premium compo-
nents plus care and attention to board de-
signandlayout.Theresultissuperb, trans-
parent audio quality and the headroom to
handle anything that a mic can throw at it.
Gain is adjustable from 20 db through to
60 dB via a trim control on the front panel,
pluswe’veincludeda–20dBPadswitchto
tame the hottest condenser mic output if
Applications
• Console input extending for both Digital
andAnalog mixing consoles in Studio,
Live and Broadcast
• Mic Pre-amps for Hard Disk/ADAT/
Multitrack Recording
required.The Clip status LED lights up
1 dB before the onset of clipping, just
to warn you you’re getting close.
Phantompoweris switchable in banks
offour channels: 1through4,5through
8.A Phase reverse switch is also pro-
videdon eachpre-ampchannel toelim-
inate any close miking problems.
In short, theARX 8 pre is the mic Pre-
ampthatyou’llwishthe console manu-
facturer had used.
Every day, ARX Audio interface prod-
ucts solve audio problems for thou-
sands of people around the world. We
don’tmake digitaloranalogmixers and
we don’t have to cut any corners on
quality.Weknowwe’reobsessiveabout
audioquality, butwe’rebettingthatyou
are too.
TheARX8 pre providesa unique solu-
tion to today’s multiple Mic Pre-amp
requirements.
8 pre front detail
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Eight Ultra Low
noise mic pre-
amps
Balanced XLR
inputs
Switchable
Phantom power
Individual Pad
switches
Individual
Phase Reverse
switches
Individual Gain
trim controls
Comprehensive
LED status
indicators
Flawless per-
formance in
any audio
environment

©2006ARX Systems Pty. Ltd.ACN 006 471 825. All rights reserved.ARX Systems® is a Registered Trade Mark
• Phantom power switch and status LED for
Channels 1 – 4
• -20 dB Pad switch and status LED
• Gain trim control 20 dB through to 60 dB
available
• Clip LED indicator
• Phase Reverse switch and status LED
• Marker panel for labelling pre-amp assigns
• Phantom power switch and status LED for
Channels 5 – 8
Channels1 through 8have identical controls
• AC input connector, with voltage switch and
fuse.
• Balanced XLR Inputs Channels 1 through 8
Our policy is one of continuous im-
provement,andthereforedesignsmay
change without notice. However, un-
lessotherwisestated,specificationswill
always equal or exceed those previ-
ouslygiven.
Specificationsavailable onCDROM
The unit shall consist of 8 independent
microphone pre amplifiers, mounted in
a standard 1 RU all steel chassis with
extrudedaluminium front panel.
Each pre-amplifier shall have a bal-
anced female XLR input connector
(wired Pin 1 Ground, Pin 2 +, Pin 3 –)
andabalancedTip-Ring-Sleeve output
connector (wired Tip +, Ring –, Sleeve
Ground) mounted on the rear panel.
Each pre-amplifier chnnel shall have a
Gaintrim controlonthefront panel,vari-
ablefrom20dBthroughto60dB.Each
pre-amplifier channel shall also have -
20dBPadswitchesandPhasechange
switches.
48VDCPhantompowershall be avail-
Input Gain
20dB– 60dB
Input Pad
–20dB
Input Impedance
4KOhm
Input Headroom
+23dB
Output Impedance
300Ohm
Output Level (Max)
+23dB
Frequency Response
20Hz – 20KHz ±0.2 dB
Signal to Noise ratio
Gain set @ 20 dB
–93dBUnweighted
–99dB‘A’weighted
Distortion @ Unity Gain
.004%, 20 Hz – 10 KHz
Dynamic Range
116dB
Phantom Power
48 VDC
Input Connectors
BalancedXLR: Pin 1
Ground, Pin 2 +, Pin 3 –
Output Connectors
BalancedTRSjack
Clip Indicator
Illuminates1dBpriorto
clipping
Power Requirements
100-120/220-240VAC
50/60 Hz 8VA(8 watts)
on 3 pin IEC connector
Weight
5lbs/2.2 Kg
Dimensions
19"W x 1¾"H x 6"D
482 x 44 x 155mm
ableoneachinput,switchablein banks of
four,ie:Channels1 through 4, and Chan-
nels 5 through 8.
The Signal to Noise ratio @ 20 dB shall
be –93dB unweighted. Input impedance
shall be 4 KOhms, and the output imped-
ance shall be 300 Ohms.
Maximum Output Level shall be +23dB
AC power range shall be switchable 100
to 120V or 220 to 240V AC, and shall be
connectedtotheunitviaastandardthree
pin IEC connector, with built-in fuse and
voltage change switch.
The 8 channel microphone preamp unit
shall be theARX 8 PRE
• Balanced TRS jack Outputs Channels 1
through8
Latestupdatesalways available on theARXwebsite - www.arx.com.au
ARX Systems Pty Ltd; PO Box 15, Moorabbin, Victoria 3189, Australia
Phone: [phone] Fax: [phone] International Fax [phone]
Email: [email protected] Internet: www.arx.com.au
ARX Systems are based in Melbourne, Australia, where all ARX Products are assembled
and tested in our ‘state-of-the-art’manufacturing facility
For over 20 yearsARX has designed, manufactured and supportedAudio Products for Pro-
fessionalusersand applications worldwide