Arx Unimix User manual

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Automatic Gain

Control for consist-

ent audio record-

ing levels

6 Mic/Line Input

channels with

Balanced XLR

Inputs

Dedicated stereo

Line In channel

Individual Level

controls from oo

through to +6dB

Master Level

controls

Dedicated Trans-

former Isolated

Recording Level

control with

Balanced Jack

Outputs

Transformer

Isolated Balanced

XLR Auxiliary

Output

Numbered Marker

panels for channel

assigns

Headroom to

handle the hottest

signals

Flawless perform-

ance in any audio

environment

MULTI CHANNEL TRANSFORMER

ISOLATED AV/PODCAST MIXER

™

Hand made in Australia!

These days, more and more educational in-

stitutions such as colleges, universities and

high schools are expected to provide down-

loadable recordings - podcasts - of lectures

and classes, for students to access at all

times on the local area network. These re-

cordings are typically taken from the class-

room/lecture theatre sound system and

saved to a computer in real time.

Problem 1: Getting the correct level is

hard, given that the level requirements are

different to those of speakers.

Problem 2: Maintaining a steady input level

to the computer requires continual moni-

toring to prevent digital overload.

The Solution

Introducing the new UniMIX from ARX:

Six Balanced XLR Mic / Line input chan-

nels with individual level controls, plus a

dedicated stereo RCA jack Line In chan-

nel.

Each Mic/Line input has infinity to +6dB of

Level available on the front panel, as well

as a 10 to 50dB Input Gain control. The

stereo Line Input channel has a –10 to

+10dB Level Trim control, to allow accu-

rate matching of any line level signals.

On the rear panel, each of the 6 electroni-

cally balanced Mic inputs can be switched to

Line via individual switches.

Multiple Masters

For the room system, the UniMIX has 2 Bal-

anced XLR outputs, with 3 way EQ and its

own Master Level control.

The Recording Outputs are stereo balanced

jacks, transformer isolated to prevent

ground loops and associated noise.

Automatic Gain Control

The Recording Master also has its own Au-

tomatic Gain Control circuitry. Specially tai-

lored parameters ensure that levels remain

constant, irrespective of Mic placement and

user technique.

The result is a consistent level for the re-

cording, removing the need for fulltime mon-

itoring and the risk of overloading and dis-

tortion.

The final Master control feeds the main sig-

nal to a transformer isolated Balanced XLR

Auxiliary Output. This can be used for fu-

ture expansion, remote monitoring or for

feeding a wireless transmitter or other de-

vice.

Global Phantom Power is available on all

Microphone inputs with a rear panel switch

with associated front panel status LED.

Wide Dynamic Range

Internally, careful attention to the signal path

design, using precision components found

in high-end mixing consoles, has resulted

in a unit with very wide dynamic range. The

UniMIX has enough headroom to cope with

the hottest line signal, and better than digi-

tal noise specifications

Universal AC Power

AC power range is a universal 100 to 120V

or 220 to 240V AC, and is connected to the

unit via a standard three pin IEC connector,

with built-in fuse and voltage change switch.

MIX

Uni

Latest updates always available on the comprehensive ARX website: www.arx.com.au

Ourpolicyisoneofcontinuousim-

provement, and therefore designs

may change without notice. How-

ever,unlessotherwisestated,spec-

ifications will always equal or ex-

ceed those previously given.

Themixershallbemountedintoastandard1RUsteel

chassiswithextrudedanodisedaluminiumfrontpanel.

It shall have six input channels switchable to Mic or

Line,with one Levelcontrol per input.Each level con-

trolshallprovidefullattenuationthroughto+6dBofgain.

An associated Gain control shall have 10dB to 50 dB

Gain

There shall also be a stereo Line input channel, with

RCAtypephoneconnectors.ItshallhaveitsownLev-

elcontrol,andanassociated–10to+10dBInputTrim

control.

Ontherearpanel,allMic/LineInputsshallbeelectron-

icallybalanced3pinfemaleXLR connectors.

There shall be a Master Level control with three way

EQonthefrontpanel,andtheMasteroutputsshallbe

electronicallybalanced3pinmaleXLRoutputconnec-

tors.Thereshallalsobeasingletransformerbalanced

XLRAuxiliaryMasteroutputwithassociatedfrontpan-

elLevelcontrol.

ThereshallalsobeaRecordingOutputMastercon-

trolonthefrontpanel,withassociatedAutomaticGain

Control.The outputsshall betransformer balanced

TipRing Sleeve balancedjacks.

48V DC Phantom Power shall be available on all

MicInputs viaa rear panel switch

InputHeadroomshallbe+24dB,andMaximumOut-

putLevelshallbe+24dB.

Output Signal/Noise @ unity gain shall be -90dB A

weighted,Master@unity,

FrequencyResponseshallbe20Hz-20KHz ±1dB.

Distortion@unitygain,shallbebelow.0035%100Hz

to10KHz.

ACpowershallbeswitchable100to120Vor220to

240VAC,connectedtotheunitviaastandardthree

pin IEC connector, with built-in fuse and voltage

changeswitch.

Theunit shall be theARX UniMIX

• 6x Female XLR Balanced Inputs wired Pin 1

Audio Ground, Pin 2 +, Pin 3 –

• RCA type Stereo Line Inputs

• Left and RightTransformer isolatedTRS

Balanced Recording Output jacks

• Left and Right Male XLR Balanced Outputs,

ARX Systems Pty Ltd; PO Box 15, Moorabbin, Victoria 3189, Australia

Phone: 03 9555 7859 Fax: 03 9555 6747 International Fax +61 3 9555 6747

Email: [email protected] Internet: www.arx.com.au

• Individual Level controls for each input channel

- infinity through 0db to +6dB

• Individual Gain Controls for each Input channel,

10 to 50 dB

• Stereo Line In Level and Trim control

• Master Output 3 way EQ and Level control

• System Status LEDs

• Recording Master Level control and

Automatic Gain Control Threshold trim

• Auxiliary Master Output control

• Marker panel for labelling input channels

wired Pin 1Audio Ground, Pin 2 +, Pin 3 –

• Transformer isolated Auxiliary Master XLR

Output

• Global Mic input Phantom Power switch

• Removable IEC type AC input connector, with

inbuilt fuse

Input Impedance

Mic 4KOhmsBalanced

Line22KOhms Unbalanced

Input Gain

MicrophoneVariable10 dB to

50 dB with rear trim control

Mic / Line switch -20dB

Output Level ( Max) +21dB

AGC Threshold

–30 to 0 dB

AGC Output Gain

–20 to +20 dB

Phantom Power:

+48VDCswitchable on all

MicrophoneInputs

Output Signal/Noise

(@ unity gain)

-90dBAweighted,all inputs

@ Unity, Master @ Unity

Dynamic Range 115dB

Master Output EQ

Low100Hz15dBCut/Boost

Mid800HZ 15dB Cut/Boost

Bell,Broad Q

High10KHz15dBCut/Boost

System Master Outputs

ElectronicallyBalancedMale

XLR300 ohms,Amphenol

Male XLR: Pin 1 Ground, Pin

2 +, Pin 3 –

Auxiliary Output

TransformerBalancedMale

XLR 300 Ohms. Pin 1 N/C,

Pin 2 +, Pin 3 –

Recording Outputs

TransformerBalancedTRS

BalancedJacks,300 Ohms.

Tip +, Ring –, Sleeve N/C

Frequency Response

20Hz-20 KHz ± 1dB

Distortion (@ unity gain

Below 0 .0035%,

100 Hz to 10KHz

Input Connector Type

Mic/Line-Amphenol

FemaleXLR

Hi Z Input 7/8 Phono

(RCAtype)

N/C: Not Connected

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