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Audient Summing Amplifier Operational Manual

High resolution summing amplifier
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Operational Manual
Version 1.0 – October 2004

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  Summary of Contents for Audient Summing Amplifier

  • Page 1 Operational Manual Version 1.0 – October 2004...
  • Page 2 Operational Manual Contents Copyright 2004. All rights reserved. The information in this document is subject to change without notice. Audient plc makes no warranty of any kind with respect to the material in this document and shall not be liable for errors contained herein or for incidental or consequential damages related to the use of the material.
  • Page 3: Audient V1.0 10/2004

    Sumo’s knobs, dials and flashy lights – along with some handy hints for their use. Finally, if you’re experiencing any problems Sumo Surgery will root out most set-up and configuration issues to get you back on track in no time.
  • Page 4: Table Of Contents

    Analogue audio interfaces Digita l interfaces HOOKING UP KNOBS, BUTTONS AND FLASHY LIGHTS Input section Mix Compressor/Peak Limiter Mix master/monitor section Digital section SUMO SURGERY (TROUBLESHOOTING) Why can’t I hear anything? ACCESSORIES SPECIFICATIONS WARRANTY © Audient v1.0 10/2004 Operational Manual Contents...
  • Page 5 THIS EQUIPMENT MUST BE EARTHED. DO NOT EXPOSE TO RAIN OR MOISTURE. Please read all of the following instructions and save them for later reference before attempting to connect your Sumo to the © Audient v1.0 10/2004 Operational Manual Important safety instructions...
  • Page 6: Safety Information

    DO NOT remove the covers. Refer servicing to qualified personnel only. VOLTAGE Sumo is set to operate only at the voltage shown on the rear panel. CHECK that the correct voltage is available before connecting the AC mains supply. FUSES CHECK that the fuse fitted is of the correct type for the local mains voltage.
  • Page 7: Installation

    Mains Power Supply Fuses Sumo can be switched to operate at mains voltages of either 230V or 115V. With the switch in the 230V position, the unit will operate without performance degradation from 210V to 250V.
  • Page 8: Overview - The Benefits Of Analogue Summing

    Nevertheless, here are a few more interesting and descriptive words with which to impress your inquisitive friends. In essence, Sumo takes a bunch of signals from several inputs and adds or “sums” them together to present them to one output. This is exactly the same process as takes place in mixing consoles –...
  • Page 9: Optional Extras

    Consequently, the bus compressor from the ASP8024 has also been included in Sumo’s design: a flexible, high quality compressor capable of polishing a mix to perfection. And there’s more; we’ve added in a digital...
  • Page 10: Plugs And Sockets

    Sumo units to connect directly into the mix bus. All of Sumo’s analogue audio connections operate at +4dBu, the professional standard, so you may need to ‘pad’...
  • Page 11: Digital Interfaces

    Pin conventions To unbalance the outputs of the Sumo the -ve Pin should be connected to its adjacent 0v pin at Sumo’s output. Similarly, inputs from unbalanced sources should be connected via twin screened cables with the –ve pin connection tied to the screen at the unbalanced source.
  • Page 12: Hooking Up

    (see Figure 1, on next page) 1. Connect the outputs of your DAW’s interface and any other sources to Sumo’s inputs. If your DAW’s interface can output at - 10dBV or +4dBu, select the latter. This is the professional standard...
  • Page 13 Operational Manual Hooking Up Summing Inputs Inserts Monitor Outputs Main Outputs Figure 1: Analogue Connections © Audient v1.0 10/2004...
  • Page 14: Word Clock

    Operational Manual Hooking Up Clock Master Word Clock Word Clock AES/EBU S/P DIF Figure 2: Digital Connections © Audient v1.0 10/2004...
  • Page 15: Knobs, Buttons And Flashy Lights

    MONO Buttons – Under normal circumstances, all of the odd numbered channels entering Sumo are routed to the left side of the bus, while even numbers are routed to the right. Of course, this is going to sound a little unusual if your kick drum appears on the left and your snare is on the right, etc.
  • Page 16: Mix Compressor/Peak Limiter

    MIX COMPRESSOR/PEAK LIMITER DYNAMICS ‘In’ Switch – Puts both compressor and limiter in circuit. When the dynamics are out, they are hard bypassed, clearing the signal path of any unnecessary components. Threshold – Sets the point at which compression begins to work. Due to the soft-knee characteristic of the compressor, some slight gain reduction is applied before the threshold level.
  • Page 17: Mix Master/Monitor Section

    Adjusting this will vary the way the compressor handles transient sounds. Where control transients required, faster attack will down on peaks. However, if larger amounts of gain reduction applied, unnecessarily attack times affect frequency content. Peak Limiter ’s response is fast attack, fast release, and very hard.
  • Page 18: Digital Section

    ‘locked’, with the external source. When lock is achieved the light will glow solidly. When using Sumo as a Word Clock Master, set any attached recorders to take wordclock from their AES/EBU or s/pdif input (the one that’s connected to Sumo).
  • Page 19: Sumo Surgery (Troubleshooting)

    +20dBu. The channel carrying In software, route all the your kick drum is part of tracks you want centred to a stereo pair. inputs 1-4 of the Sumo. Then switch in Sumo’s mono buttons, and hey presto! Remedy...
  • Page 20: Why Can't I Hear Anything

    Why can’t I hear anything? START HERE Is there anything showing on the main meters? Turn the monitor volume up. Does this help? Problem solved. © Audient v1.0 10/2004 Is there an insert attached? Make sure that your source is playing back.
  • Page 21: Accessories

    ACCESSORIES A range of accessories is available to hook up to other gear or expand your Sumo system. All cables are of the highest quality and will perfectly complement your Sumo in any set-up. For alternative terminations or lengths, contact your Audient dealer.
  • Page 22: Warranty

    God or accident. We accept liability to repair or replace your Sumo as described above. We do not accept any additional liability. This warranty does not affect any legal rights you may have against the person who supplied this product –...

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