Aeta Audio Systems 4MinX Manual de usuario

AETA AUDIO SYSTEMS

18-22, avenue Edouard Herriot –Kepler 4 –92350 Le Plessis Robinson –FRANCE

Tél. +33 1 41 36 12 00 –Fax +33 1 41 36 12 69 –Web: http://www.aeta-audio.com

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4MinX - User manual

4MinX

Portable Mixer/Recorder

User manual

55 000 061 - I

4MinX - User manual

Index

1. Technical Characteristic...........................................................2

2. AUDIO Interfaces......................................................................3

2.1. Audio Inputs .................................................................................................3

2.1.1. Input “Mic/Line” ...................................................................................3

2.1.2. Line inputs/return ..................................................................................6

2.1.3. Embase “EXT I/O”, Récepteurs HF ......................................................6

2.1.4. AES Inputs ............................................................................................7

2.2. Audio outputs ...............................................................................................7

2.2.1. Main outputs “Line Out” .......................................................................7

2.2.2. Unbalanced “Line Out” .........................................................................7

2.2.3. Analog outputs for radio transmitters....................................................8

2.2.4. Digital outputs.......................................................................................8

2.3. Monitor.........................................................................................................9

2.3.1. Display screen .......................................................................................9

2.3.2. Configuration ......................................................................................10

2.3.3. Headphone monitoring........................................................................12

2.4. Internal alignment signal generator ............................................................12

2.5. Intercom / Slate microphone.......................................................................13

3. Powering...................................................................................14

3.1. Specifications..............................................................................................14

3.1. Switching on and off...................................................................................15

4. Menu description.....................................................................16

4.1. General principles.......................................................................................16

4.2. Menu structure............................................................................................17

4.3. Menu : « Audio »........................................................................................19

4.3.1. Menu : « Audio Inputs »......................................................................19

4.3.2. Menu : « Audio Output » ...................................................................20

4.3.3. Menu : « Coupling »............................................................................20

4.3.4. Menu: « Routing »...............................................................................20

4.3.5. Menu : « P1-P4 function »...................................................................22

4.3.6. MIDI Menu .........................................................................................22

4.3.1. Menu « Master gain»..........................................................................24

4.3.2. Menu « Mixdown Limiter» .................................................................24

4.4. Menu : « Recording » .................................................................................24

4MinX - User manual

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4.4.1. Menu: « Project Management »......................................................... 24

4.4.2. Menu : « File Management................................................................. 27

4.4.3. Menu : « Filename template »............................................................. 30

4.4.4. Menu : « Meta data ».......................................................................... 30

4.4.5. Menu : « File format »........................................................................ 33

4.4.6. Menu : « Pre-record »......................................................................... 33

4.4.7. Menu : « Backup False take »............................................................. 34

4.4.8. Menu « Backup to USB »................................................................... 34

4.5. Menu « Settings »....................................................................................... 35

4.5.1. Menu : « Synchronization »................................................................ 35

4.5.2. Menu : Time Code ( Option).............................................................. 36

4.5.1. Menu : « Snapshots ».......................................................................... 37

4.5.2. Menu : « Tone ».................................................................................. 37

4.5.3. Menu : « Display ».............................................................................. 37

4.5.4. Menu : Function keys.......................................................................... 37

4.6. Menu : « Tools »........................................................................................ 38

4.6.1. Menu : Power down........................................................................... 38

4.6.2. Menu : Sleep...................................................................................... 38

4.6.3. Menu : Eject media............................................................................ 38

4.6.4. Menu : Reset settings......................................................................... 39

4.6.5. Menu : Import/export configurations................................................. 39

4.6.1. Menu : Format media......................................................................... 39

4.6.2. Warning .............................................................................................. 40

4.6.3. Update................................................................................................. 40

5. Operating mode –Detailed description.................................41

5.1. Interface ..................................................................................................... 41

5.2. Start a record.............................................................................................. 42

5.3. Play a take .................................................................................................. 43

5.3.1. Navigation........................................................................................... 43

5.3.2. Play..................................................................................................... 43

5.3.3. Monitoring.......................................................................................... 44

5.3.4. Search or modify a take ...................................................................... 44

5.4. Shortcuts..................................................................................................... 45

5.5. Quick Screens/configurations..................................................................... 45

5.5.1. Inputs configuration............................................................................ 46

5.5.2. Audio Routing..................................................................................... 47

5.5.1. Audio lock potentiometers.................................................................. 48

5.6. Snapshots ................................................................................................... 48

5.6.1. Save / Load ......................................................................................... 49

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4MinX - User manual

5.6.2. Export..................................................................................................49

5.6.3. Import..................................................................................................50

6. Audio couplings .......................................................................51

6.1. Microphones...............................................................................................51

6.1.1. Monophonic ........................................................................................51

6.1.2. Stereophonic........................................................................................52

6.1.3. Surround..............................................................................................53

6.2. Stereo coupling...........................................................................................55

6.3. M/S coupling ..............................................................................................56

6.4. Double M/S coupling..................................................................................57

6.5. Link all 1 to 4..............................................................................................59

6.6. Soundfield A/B format (Optional)..............................................................60

7. Technical Specifications..........................................................64

7.1. Microphone/Line inputs..............................................................................64

7.2. Line input....................................................................................................65

7.3. AES inputs..................................................................................................65

7.4. "Line Out" balanced analog outputs ...........................................................66

7.5. "Line Out" unbalanced analog outputs .......................................................67

7.6. Digial outputs .............................................................................................67

7.7. Headphone output.......................................................................................68

7.8. "Direct I/O" interface..................................................................................68

7.9. "EXT I/O": Interface for RF transmitters/receivers....................................69

7.10. Power supply ............................................................................................70

7.1. Time Code ..................................................................................................70

7.2. Dimensions and weight...............................................................................72

7.3. Environmental ............................................................................................72

7.4. Options Hirose 10Pins................................................................................73

8. Annexes.....................................................................................74

8.1. iXML..........................................................................................................74

8.2. Overview of connectors and front panel elements......................................76

8.3. Block diagram.............................................................................................79

8.4. Level maps..................................................................................................81

8.5. Filters..........................................................................................................82

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8.6. Limiter........................................................................................................ 83

8.7. Accessories................................................................................................. 84

9. Notes .........................................................................................88

Index ................................................................................................89

Revision:

I–Build on firmware V1.7.4

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4MinX - User manual

Introduction

4MINX is a portable mixer specially designed for outside recording.

4Minx is new kind of product on this market. It can be use as a traditional

mixer, but can be use as a multi tracks recorder. In same time, it can manage

digital audio treatment in real time.

This equipment is suitable for sound production, with its remarkable audio

features and its full compatibility with « M/S » and « surround » systems.

4Minx have 4 Mic/Line inputs, with all power phantom and limitor, 2 digital

inputs AES3. Digital inputs support the normalization AES42 for digital

microphones (10v phantom power).

4Minx has many outputs, 6 analog channels and 6 digital channels AES3.

The routing capability for each input and each output give complete liberty to

the user.

The multi tracks recorder can grow up to 8 tracks on SD/SDHC card and can

make a backup on external USB disk. You should use SD/SDHC card Class 10

or similar to avoid problems.

A project management included in the unit gives the opportunity to make many

sounds recording without problem.

4MinX has a keyboard and a 3” TFT high quality display, offer a simple and

nice user interface. On 4Minx the user can set its own mixer interface in regards

inputs and outputs need in his configuration.

To start a work quickly, you can read the quick start delivery with the unit. It

will provide you all details step by step to start a record.

4MinX - User manual

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1. Technical Characteristic

Light weight and small dimensions (1.9 kg, 260 x 75 x 195 mm)

4 Mic/Line transformerless inputs, very low noise (-128dBu)

Adjustable input gain, 10 dB steps, 0 to +50 dB

High-pass filters on each channel

Maximum overall gain: 90 dB, useful for dynamic and ribbon

microphones

Maximum input level: +19 dBu without pad

Input headroom: 40 dB, independent of input stage gain

LED for overload warning on each input channel

Fast limiter on each input, 40 dB operating range, with LED indicator

Stereo or M/S coupling on inputs 1&2 et 3&4

Stereo M/S encoder/decoder on inputs 1 & 2, 3 & 4

4 main line outputs, maximum level adjustable from -9dBu to +22dBu

2 return or auxiliary line inputs, maximum acceptable level adjustable

from -9dBu to +22dBu ( for 0dBFS)

separate Stereo M/S encoders/decoders, for monitoring

2 unbalanced outputs (level 6 dB below the balanced outputs)

3” QVGA TFT screen with adjustable brightness, displaying large

scale bargraphs (50 dB dynamic range)

High performance headphone amplifier, with selectable source and

listening mode

Long operating range on Li-Ion DV battery and charger inside

3 AES3 digital outputs, stereo, 24 bits, up to 96 kHz

2 AES3 digital inputs with phantom +10V for AES42 microphones

with sample rate convertor.

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4MinX - User manual

2. AUDIO Interfaces

The functions of the analog and digital mixer are shown on the functional

diagram that can be found in annex,“Block diagram”. On next paragraph, we

will describe in detail all inputs and outputs of the 4MinX

2.1. Audio Inputs

2.1.1. Input “Mic/Line”

Each of these four inputs is available on a 3-pin female XLR socket, and

is electronically balanced. Each input support 48V phantom power or T12

power. If no powering is active, unbalancing an input has no negative impact on

the performance.

. Each input has its own volume control on the front panel, generally

named « fader ».

Specificities:

-Inputs 3 and 4 can also be fed from the “EXT I/O” socket, in which

case no microphone powering is available

-Input 1 and 2 can stand very strong audio levels thanks to a 20 dB

attenuator. When it is enable, the input level can grow up to +39dBu.

Functions of the “MIC/Line” inputs

The following functions are available on each input, via a selection in the menu:

4MinX - User manual

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Input stage gain setting, 0dB to +50dB, 10dB steps;

Phantom power for a microphone, 48V, or “Tonader 12V” ;

Analog high-pass filtering, 50 Hz cut-off frequency, 18dB/octave;

Digital high-pas filtering, 50 Hz to 200Hz 12dB/octave and 300 Hz,

6dB/octave, suitable for compensating proximity effects in directional

microphones

Polarity inversion (phase reversal)

Fast limiting, with “soft knee”;

Routing to Left or Right bus, or Center (i.e. L and R), with pan-pot, or

not routed at all

The “risk of overload” LED begins to light at 12 dB below overhead.

Attenuator ( 20dB ) can be enable on the mic/line input 1 & 2

Note:

-The 50Hz analog filter can be enabling in the same time as the digital

filtering. In this case rate will be 32dB/Oct below 50Hz.

-A limiter can be inserted into each channel (post-fader). Its activation

is shown by a green LED that turns red when the signal begins to limit.

Stereo and M/S

Via menu selection, channels 1 and 2, 3 and 4 can be used as

independent channels or coupled for stereo or M/S operation. When used as a

couple of stereo or M/S channels, the channel impair becomes the master,

controlling the level of both channels. The channel pair provides +/-5dB

adjustment of the balance in L/R mode (normal stereo), or the stereo width in

M/S mode.

In normal stereo mode, the transducers usually have matching sensitivity:

Any change of the input gain on one channel induces the same on

the other channel;

The even channel control controls the balance between L and R

channels by +/- 6dB

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