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Aeta Audio Systems MIXY User Manual

Portable stereo and m/s analog/digital mixer
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MIXY
Portable Stereo and M/S
Analog/Digital Mixer
User Manual
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
55 000 057 - B
MIXY - User Manual
Specifications subject to change – All rights reserved by AAS
August 07
55000057-b_mixy_en.doc

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  • Page 1 Tél. +33 1 41 36 12 00 – Fax +33 1 41 36 12 69 – Web: http://www.aeta-audio.com 55 000 057 - B MIXY - User Manual Specifications subject to change – All rights reserved by AAS August 07 55000057-b_mixy_en.doc...

  • Page 3: Table Of Contents

    3.11. Save or recall a complete setup............21 3.12. Programmable key ................21 3.13. Using the L/R M/S transcoding ..........22 Technical specifications............26 4.1. Microphone/Line inputs..............26 4.2. "Line Out" balanced analog outputs ..........27 55 000 057 - B MIXY - User Manual...
  • Page 4 4.9. Dimensions and weight ..............32 4.10. Environmental ..................32 4.11. Versions - Options................32 4.12. Accessories..................32 Annexes ................33 5.1. General block diagram ...............33 5.2. Overview of connectors and front panel elements ......34 5.3. Level maps ..................36 MIXY - User Manual 55 000 057 - B...
  • Page 5 Introduction MIXY is a portable mixer specially designed for outside recording (ENG). MIXY is ideally suitable for production, thanks to its outstanding audio characteristics and full compatibility with “M/S” systems. MIXY includes three Mic/Line inputs, with comprehensive powering and limiting features.

  • Page 6: Main Technical Characteristics

    Long operating range built-in Ni-MH battery and charger AES and Toslink digital outputs, stereo, 24 bits, up to 96 kHz SPDIF stereo input for synchronisation or D/A conversion Stereo digital inputs/outputs over a USB interface MIXY - User Manual 55 000 057 - B...

  • Page 7: Functions

    The “risk of overload” LED begins to light at 12 dB below overhead. 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. 55 000 057 - B MIXY - User Manual...
  • Page 8 Input 1 is the “M” signal, input 2 is the “S” signal; Input1 + Input 2 (M+S) is routed to the Left bus; Input1 - Input 2 (M-S) is routed to the Right bus. MIXY - User Manual 55 000 057 - B...

  • Page 9: Ext I/O" Socket, Radio Receivers

    The “EXT I/O” socket is available for the connection of an optional extension box. This device can be used to interface MIXY with radio transmitters and/or receivers; it can also house a removable battery pack and provide the mixer with additional power.

  • Page 10: Usb And Auxiliary Return/Line In

    2.3. USB and auxiliary Return/Line In MIXY also has auxiliary two-channel inputs that can be routed to the mix buses, and/or monitored on the display and the headphone: USB: this interface brings a digital 2-channel signal, that is converted to analog ;...

  • Page 11: Monitor

    -40 dBu to +14 dBu, which allows a suitable adaptation to most radio transmitters. 2.5. Monitor The « Monitor » function allows the selection of signals inside MIXY for displaying their level on the screen ( ) and monitoring them on headphones (...
  • Page 12 To compensate for such situations, it is possible to use MIXY’s “monitoring boost” function, that provides a 20 dB gain increase on the headphone when a pre-fader source is selected. This function can be instantly activated or deactivated using the programmable push-button ( ), and its status is reminded by an icon on the display.

  • Page 13: Digital Outputs

    M and S signals. 2.6. Digital outputs MIXY delivers 24-bit stereo digital outputs; it is possible (via the menu) to select either a “Pro” mode or “Consumer” mode, depending on the type of equipment the signals are fed to. It is also possible to select the sampling rate, 44.1 kHz or 48 kHz.

  • Page 14: Spdif Digital Input

    2.7. SPDIF digital input MIXY can accept an SPIDF digital audio input on its « Dig. In » RCA socket (unbalanced, 75 Ohm). This input can be used in two ways (“Inputs” menu): Synchronisation of the digital parts of MIXY, including the A/D and D/A converters, onto the SPDIF input.

  • Page 15: Internal Alignment Signal Generator

    (which may be desirable e.g. if the external source is itself derived from a battery pack). MIXY can operate from an external source of 8 V to 18 V DC voltage. MIXY draws constant power from the external source when the voltage changes.

  • Page 16: Operating Mode - Detailed Description

    Unlike most portable mixers MIXY is largely controlled through display screens and menus. Changes done via the menus are saved, so when MIXY is restarted the settings are reset as they were before switching off. In addition, there are 9 memories where you can quickly save and recall full sets of parameters for the unit.

  • Page 17: Mic/Line 1 And 2 Operating Mode

    “double-click” the joystick. The display directly jumps to the input settings sub-menu (second page, featuring the settings for the limiters, high-pass filters, and phase inverters). 55 000 057 - B MIXY - User Manual...
  • Page 18 10 dB steps from 0 to 50 dB. Confirm the choice by pressing “OK” ( NOTE: Conventional stereophonic microphone couples normally have matched sensitivity. For more convenience, MIXY automatically links the input gain of channels 1 and 2, so you only need to set this gain once for a stereo couple.
  • Page 19 Confirm the choice by pressing “OK” ( 3.4.6. Phase (polarity) Last setting is the channel polarity, “+” for normal operation, or inverted, “ — ”. Confirm the choice by pressing “OK” ( 55 000 057 - B MIXY - User Manual...

  • Page 20: Auxiliary Inputs

    The third column shows the line level setting. There is no physical fader to control the level for the line inputs, but here you can align the level. The setting is the level (in dBu) for which you get a full scale signal at the input of MIXY’s internal A/D converter.

  • Page 21: Parameters Of The "Line Out" (Xlr5M) Interfaces

    USB host), with same sampling rate as the SPDIF input. “DA ON”: same as the above, but in addition MIXY acts as a D/A converter : the audio signals of the SPDIF input are converted to MIXY’s...

  • Page 22: Levels For The Outputs To Rf Transmitters

    ) provides the same signals in unbalanced format and 6 dB lower. 3.7. Levels for the outputs to RF transmitters On the left panel of MIXY, you can find a Neutrik 12-pin Minicon socket labelled “EXT I/O”. This socket includes two analog outputs provided to feed two RF transmitters (or one stereo transmitter).

  • Page 23: Monitoring

    For instance, Input 3 can only be monitored in “L+R” mode. The joystick gets automatically “locked” after a few seconds, or you can click the joystick immediately to “protect” it against undesired moves. 55 000 057 - B MIXY - User Manual...

  • Page 24: Miscellaneous Functions

    2 and channel 3. 3.10.2. Internal battery charge MIXY includes a charger circuit specifically adapted for its internal Ni-MH battery. Whenever a DC source is supplied, as a default the unit charges the internal battery even while it is on. However, as charging draws up to 10 W power, it may be desirable to prevent this, e.g.

  • Page 25: Save Or Recall A Complete Setup

    Afterwards, the whole configuration can be recalled in a similar way, but using the “Load” menu line. Important notice : when switched on, MIXY recalls its settings as they were before switching off. There is no need to use the memories for this purpose.

  • Page 26: Using The L/R M/S Transcoding

    M/S transcoding This chapter shows examples of situations where L/R M/S matrixing can be used and the effect of matrixing in these situations. Due to the flexibility of MIXY, this is not an exhaustive view and other configurations are also possible.
  • Page 27 With this arrangement, note that, unlike the analog and USB outputs, the digital outputs (AES and Toslink) stay encoded in M/S format, which allows subsequent re- work on the stereo image in post-production. 55 000 057 - B MIXY - User Manual...
  • Page 28 MAIN output (Outputs kept configured in “L/R” mode). Monitoring is here set in “M/S” mode, as matrixing is needed for monitoring a normal stereo signal on the headphones and meters. MIXY - User Manual 55 000 057 - B...
  • Page 29 (and USB) outputs (set on “M/S” mode). Matrixing is not needed for monitoring a normal stereo signal on the headphones, except for monitoring the MAIN output, which is encoded in M/S format. 55 000 057 - B MIXY - User Manual...

  • Page 30: Technical Specifications

    Maximum gain, 90 dB analog in to out Bandwidth 10 Hz - 50 kHz (+0 dB, -1 dB) Common Mode Rejection 90 dB @ 1 kHz Input impedance > 2 k MIXY - User Manual 55 000 057 - B...

  • Page 31: Line Out" Balanced Analog Outputs

    (Signal to Noise and Distortion Ratio) 4.3. "Line Out" unbalanced analog outputs Format 2 channels, unbalanced Socket Mini-jack 3.5mm, stereo Output level 6dB below balanced output Maximum output level +16 dBu Source impedance 55 000 057 - B MIXY - User Manual...

  • Page 32: Headphone Output

    4-pin female, Hirose HR10-7R-4S Nominal voltage 12 V Minimum operating voltage Maximum acceptable voltage 16 V The power socket has following pin allocation: Function - External DC (and ground) + External DC MIXY - User Manual 55 000 057 - B...

  • Page 33: Ext I/O": Interface For Rf Transmitters/Receivers

    - Input 3bis Input +9V output, protected (100mA) Output - Input 2bis Input - External DC power Input (linked to equipment ground) + Input 2bis Input Detection of the extension module Input 55 000 057 - B MIXY - User Manual...

  • Page 34: Digital Outputs And Direct Analog Outputs

    RCA plug with following characteristics: Standard CEI 958 , SPDIF, "consumer" format Electrical format Unbalanced, transformer isolated Connector Male RCA plug 0.5V c-c Amplitude (on 75 load) Source impedance MIXY - User Manual 55 000 057 - B...

  • Page 35: Power Supply

    Whenever the battery voltage goes down to 4 V (1 V per internal element), MIXY is automatically shut off. This prevents damaging the battery by discharging it too deeply. Conversely, it will only be possible to restart MIXY from its internal battery after it has been recharged to at least 4.5 V.

  • Page 36: Dimensions And Weight

    1230 g Weight (2.7 lbs) 4.10. Environmental MIXY can operate from–20 °C to +55 °C ambient temperature (-4 °F to 131 °F). MIXY complies with EC directives regarding safety, EMC and hazardous substances (RoHS): Safety : compliant with EN60950 Susceptibility: compliant with EN50082-1 Emission: compliant with EN55022 (classe B) 4.11.

  • Page 37: Annexes

    5. Annexes 5.1. General block diagram 55 000 057 - B MIXY - User Manual...

  • Page 38: Overview Of Connectors And Front Panel Elements

    AES outputs and direct Line In / Return inputs outputs from the 3 channels Main “Line” outputs, External power input balanced SPDIF input Rear panel: Optical output, “TOSLINK” Reserved for future use USB interface MIXY - User Manual 55 000 057 - B...
  • Page 39 55 000 057 - B MIXY - User Manual...

  • Page 40: Level Maps

    -130 -128 -128 Line output level map Digital Unbalanced (dBFS) Matrixing Line out Max level M/S matrixing Max. gain (setting +22 dBu) Std level Min. gain (setting -9 dBu) PAD on MIXY - User Manual 55 000 057 - B...

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