Audient Summing Amplifier Operational Manual Download Page 21

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Operational Manual

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.

Description

Order code

3 Metre Analogue 25 pin D-Sub to 8 Female XLR
Ideal for linking to audio interfaces and other Sumo units.

ASPDTF-803

3 Metre Analogue 25 pin D-Sub to 25 pin D-Sub
Ideal for connection to Pro Tools HD systems.

ASPDBD-310

Sumo 192kHz AES/EBU & S/PDIF digital output card

SUMO-AES

SPECIFICATIONS

Frequency Response

22Hz-22kHz +/- 0.1dB (-3dB @ 135kHz)

Noise

< -92dBu

Maximum Input Level

> +28dBu

Dynamic Range

120dB

Headroom (overload margin)

> 24dB ref +4dBu, 27dB ref +4dBu in mix amp

Distortion

< 0.003% @ 1kHz, +28dBu

Crosstalk

< -80dB @ 1kHz

Input Impedance

> 10k

differential

Output Impedance

< 75O electronically balanced

Dimensions

480mm x 278mm x 44mm

Weight

4.5kg

Power Consumption

40 Watts

In keeping with our policy of continuous improvement, Audient plc. Reserves the right to
alter these specifications without prior notice.

Summary of Contents for Summing Amplifier

Page 1: ...Operational Manual Version 1 0 October 2004 ...

Page 2: ...o 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 No part of this document may be reproduced without the prior written consent of Audient plc ...

Page 3: ...r and hassle while the operational guide will take you on a whistle stop tour of 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 Anywhere you see this symbol you should make sure to read the adjacent warning These will preven...

Page 4: ...E SUMMING 8 PLUGS AND SOCKETS Analogue audio interfaces 10 Digital interfaces 11 HOOKING UP 12 KNOBS BUTTONS AND FLASHY LIGHTS Input section 15 Mix Compressor Peak Limiter 16 Mix master monitor section 17 Digital section 18 SUMO SURGERY TROUBLESHOOTING 19 Why can t I hear anything 20 ACCESSORIES 21 SPECIFICATIONS 21 WARRANTY 22 ...

Page 5: ...NS WARNING 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 AC power source CAUTION ATTENTION RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC NE PAS ENLEVER ...

Page 6: ... 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 ALWAYS replace fuse with the correct type MOISTURE DO NOT expose the unit to rain or moisture If your Sumo should become so exposed REMOVE the mains power immediately HEAT ALWAYS si...

Page 7: ...from 105V to 125V will be accepted Do not attempt to operate the unit outside the relevant range defined above For 100V operation please contact your dealer Please note that the fuse ratings are different for each of the voltage ranges 20mm T250mA for the 230V setting and 20mm T500mA for 115 100V The mains fuse is very unlikely to fail under normal use and caution should be exercised if a failure ...

Page 8: ...ls are summed some data must be thrown away Moreover the volume of data discarded in this process increases with your track count It would of course be unfair to suggest that modern software performs this data reduction indiscriminately or with especially poor results however many engineers and producers have found there to be something lacking in their digital mixes often employing an analogue co...

Page 9: ...o help your mix stand out without risking nasty digital distortion To cap it all off the monitor section gives you hands on control of your playback level while the external input allows you to A B your mixes against some reference material or listen to the playback from your master recorder Optional Extras If your Sumo is equipped with a digital card you ll be able to output a stream of lovely 0s...

Page 10: ...er than an unbalanced loop on a single cable there are separate jacks for sends and returns providing balanced connections throughout A third D Sub connector which breaks out to XLRs can provide extender linking and an external monitor input The first two channels connect the external input to the monitor section while the remaining three pairs of channels allow additional Sumo units to connect di...

Page 11: ...using advanced electronically balanced topologies and are fitted with extensive RFI rejection networks Digital Interfaces The optional digital card gives Sumo the ability to output at six sample frequencies up to and including 192kHz The card provides for both of the most common stereo digital transmissions standards AES EBU on XLR and S PDIF on RCA that s a phono plug to you and I Output on both ...

Page 12: ...tch them on 3 Attach Sumo s main outputs to your master recorder such as a DAT machine or CD recorder or even right back into your DAW This stage is pretty important because you re converting back into the digital domain and the quality of this conversion will effect your overall mix so make sure to use the best converters you have available If you would like to improve your AD conversion consider...

Page 13: ...Operational Manual Hooking Up Audient v1 0 10 2004 13 Monitor Outputs Main Outputs Mix Inserts External Input 1 2 Expander Inputs 3 8 Figure 1 Analogue Connections Summing Inputs ...

Page 14: ...Operational Manual Hooking Up Audient v1 0 10 2004 14 AES EBU S P DIF Word Clock Word Clock Clock Master Figure 2 Digital Connections ...

Page 15: ...SERT Switches These buttons refer to the insert connections on the back panel Use these if you want to add your own EQ compression or anything else you can think of The In switch puts the inserts in circuit breaking the signal path if nothing is connected The Post Dyn switch allows you to alterthe position of the inserts in the chain before pre or after post the internal compressor and limiter Be ...

Page 16: ...s on the dial show the number of decibels that must be put in above the threshold to get one more dB out The greater the number the harder the compression The diagram below shows how the compressor affects the input output ratio at different ratio settings The off position allows you to bypass the compressor whilst leaving the limiter in place Dead handy if heaven forbid you re inserting a compres...

Page 17: ...ages so you immediately know where any adjustments need to be made As a rough guide 3dB of reduction with a fairly high ratio should be pretty inaudible If you re looking for a more general squashing values of up to 6dB with a lower ration 1 5 or 2 should give some good results However be aware that for the limiter and fast attack settings of the compressor reduction may occur faster than the mete...

Page 18: ...eby the sample rate will cycle through internal rates and then the external Word Clock source Lock When the external clock source is selected the select switch will flash until the converters are synchronised or 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 ...

Page 19: ...flowchart below My external input source is coming through the mix bus The external input source is connected to an expander input Ensure that the external input source is connected to inputs 1 2 of the expansion D Sub connection All I can hear is a strange hissing noise A T DIF device is attached to Sumo s inputs Although the plugs match Sumo s inputs are analogue while T DIF is digital Attach yo...

Page 20: ...s to your monitor amplifier and or speakers Does this Help Check that the inserted device is passing audio and is connected correctly Make sure that your source is playing back Does this help Check the connections from your playback device Does this help Problem Solved Put the Insert In button in the off position Does this help Turn the mix gain up Does this help Hmmm Disconnect and try again If y...

Page 21: ...alogue 25 pin D Sub to 25 pin D Sub Ideal for connection to Pro Tools HD systems ASPDBD 310 Sumo 192kHz AES EBU S PDIF digital output card SUMO AES SPECIFICATIONS Frequency Response 22Hz 22kHz 0 1dB 3dB 135kHz Noise 92dBu Maximum Input Level 28dBu Dynamic Range 120dB Headroom overload margin 24dB ref 4dBu 27dB ref 4dBu in mix amp Distortion 0 003 1kHz 28dBu Crosstalk 80dB 1kHz Input Impedance 10kO...

Page 22: ...t its discretion replace any faulty unit provided it is returned carriage paid to an authorised Audient service centre We will not provide warranty repair if in our opinion the fault has resulted from unauthorised modification misuse negligence act of 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 n...

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