Sumo Stereo Receiver Summing Amplifier User Manual

O p e r a t io n a l M a n u a l  
Version 1.0 – October 2004  
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O p e r a t io n a l M a n u a l  
C o n t e n t s  
T h a n k y o u fo r b u yin g th is p ro d u c t.  
As can be found throughout the Audient range, your Sumo has been painstakingly designed  
and lovingly nurtured to give you years of productive, reliable, mix fattening performance.  
To make the most of this, we suggest that you have a good look through this manual before  
you get started.  
The safety and installation information will help you to set your Sumo up with the minimum  
of danger 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.  
An yw h e re yo u s e e th is s ym b o l, yo u s h o u ld m a ke s u re to re a d th e  
a d ja c e n t w a rn in g . Th e s e w ill p re ve n t yo u fro m killin g yo u rs e lf,  
b lo w in g u p s p e a ke rs , a n d w re c kin g yo u r m ix . All o f w h ic h a re to b e  
a vo id e d .  
!
Te x t n e x t to o n e o f th e s e s ym b o ls is , w a it fo r it… a h a n d y h in t.  
T h e s e a re little o p e ra tio n a l titb its a n d g u id e lin e s to h e lp yo u fin d  
yo u r w a y a n d g e t th e m o s t o u t o f yo u r S u m o .  
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O p e r a t io n a l M a n u a l  
C o n t e n t s  
C O N T EN T S  
S A F E T Y IN F O R M A T IO N  
IN S T A LLA T IO N  
5
7
O VE R VIE W – T H E B E N E F IT S O F A N A LO G U E S U M M IN G  
P LU G S A N D S O C KE T S  
8
A n a lo g u e a u d io in t e r fa c e s  
D ig it a l in t e r fa c e s  
1 0  
1 1  
H O O KIN G U P  
1 2  
KN O B S , B U T T O N S A N D F LA S H Y LIG H T S  
In p u t s e c t io n  
1 5  
1 6  
1 7  
1 8  
1 9  
2 0  
2 1  
2 1  
2 2  
M ix C o m p r e s s o r /P e a k Lim it e r  
M ix m a s t e r /m o n it o r s e c t io n  
D ig it a l s e c t io n  
S U M O S U R G E R Y (T R O U B LE S H O O T IN G )  
W h y c a n t I h e a r a n y t h in g ?  
A C C E S S O R IE S  
S P E C IF IC A T IO N S  
W A R R A N T Y  
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O p e r a t io n a l M a n u a l  
Im p o r t a n t s a fe t y in s t r u c t io n s  
IM P O R T A N T S A F E T Y IN S T R U C T IO N S  
C A U T IO N  
A T T EN T IO N  
R IS K O F ELEC T R IC  
S H O C K  
R IS Q U E D E  
C H O C  
D O N O T O P EN  
N E P AS EN LEVER  
W A R N IN G  
T H IS EQ U IP M EN T M U S T BE  
EA R T H ED . D O N O T EXP O S E  
T O R A IN O R M O IS T U R E.  
P le a s e re a d a ll o f t h e fo llo w in g in s t ru c t io n s a n d s a v e t h e m fo r  
la t e r re fe re n c e b e fo re a t t e m p t in g t o c o n n e c t y o u r S u m o t o t h e  
A C p o w e r s o u r c e .  
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O p e r a t io n a l M a n u a l  
S a fe t y In fo r m a t io n  
S A F E T Y IN F O R M A T IO N  
E A R T H  
This unit is connected via its power cord to the mains safety earth.  
NEVER OPERATE THE UNIT WITH THIS EARTH  
CONNECTION REMOVED.  
C O VE R S  
DO NOT remove the covers. Refer servicing to qualified personnel  
only.  
VO LT A G E  
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.  
F U S E S  
CHECK that the fuse fitted is of the correct type for the local mains  
voltage. ALWAYS replace fuse with the correct type.  
M O IS TU RE  
H EAT  
DO NOT expose the unit to rain or moisture. If your Sumo should  
become so exposed REMOVE the mains power immediately.  
ALWAYS site the Sumo away from sources of heat including direct  
sunlight and ensure adequate ventilation around the unit.  
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O p e r a t io n a l M a n u a l  
In s t a lla t io n  
IN S T A LLA T IO N  
U n p a c k in g  
M e c h a n ic a l In s t a lla t io n  
Your Sumo has been carefully and  
meticulously tested before despatch.  
Care should be taken not to obstruct  
the unit’s ventilation holes. Adequate  
!
airflow must be provided within rack  
Please check for any signs of transit  
damage. If any signs of mishandling are  
found please notify the carrier and your  
dealer immediately.  
cases above and below the unit to prevent  
overheating.  
M a in s P o w e r S u p p ly  
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. In the 115V setting,  
voltages 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 should occur. Check  
the mains voltage, the condition of the  
mains cord and the integrity of the mains  
supply before replacing the fuse.  
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O p e r a t io n a l M a n u a l  
O v e r v ie w – T h e B e n e fit s o f A n a lo g u e S u m m in g  
O VER VIEW – T H E B EN EF IT S O F A N A LO G U E S U M M IN G  
Having bought the unit, you’ve probably  
figured out that Sumo is a high-resolution  
summing amplifier with stereo bus  
compressor and peak limiter, not to  
mention a handy little monitor section.  
Nevertheless, here are a few more  
So what’s so special about the mix bus on  
a big console? Well… only the highest of  
high end, large format consoles employ  
balanced mix buses to reduce crosstalk  
and fend off noise. And this is precisely  
the kind of mix bus you’ll find in your  
Sumo, delivering the sound of a large  
format console without the huge  
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 – the mix  
bus sums signals from all of the channels  
together.  
footprint, or price tag.  
“But my software has a mixer. Why can’t I  
just use that?” I hear you cry. Digital  
summing has one crucial problem; that  
the output bit depth is equal to or less  
than each of the internal signals. This  
means that when signals 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 console purely to make use of its  
summing bus.  
Not only is Sumo’s summing bus as clean  
as a whistle, it has frighteningly high  
headroom. This is particularly important  
because adding signals means adding their  
levels, too. The more signals you add, the  
more level you’re likely to find on the sum  
bus. Consequently, Sumo has been  
designed to handle levels in excess of  
+28dBu.  
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O p e r a t io n a l M a n u a l  
O v e r v ie w – T h e B e n e fit s o f A n a lo g u e S u m m in g  
This means that Sumo can take whatever  
O p t io n a l E x t r a s  
you throw at it without distortion or  
noise.  
If your Sumo is equipped with a digital  
card, you’ll be able to output a stream of  
lovely 0s and 1s at rates of up to 192kHz  
on both AES/EBU and S/PDIF  
standards.  
Another feature of large format studio  
consoles is the inclusion of a compressor  
over the main stereo bus. 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  
equipment guarding, mix fattening peak  
limiter to help your mix stand out without  
risking nasty digital distortion.  
As your studio and track counts expand,  
you can expand your sumo system with  
the addition of up to 3 units, giving you a  
total of 64 inputs. If you are feeling  
particularly track hungry, then each of the  
expansion units can provide 3 more  
expansion inputs etc. etc…  
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.  
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O p e r a t io n a l M a n u a l  
P lu g s a n d S o c k e t s  
P LU G S A N D S O C KE T S  
A u d io In t e r fa c e s  
The 16 inputs are connected via two  
Tascam DA88 type female D-Sub  
connectors. Interconnect cables are  
readily available in pre-wired form from  
Audient and from any good cable  
manufacturer. You can get these with  
different tail types to suit your other  
equipment, see the accessories section on  
page 18. Always use balanced connections  
to reduce any cable interference and noise.  
Inserts are connected via TRS (Tip-Ring-  
Sleeve) jacks. Rather than an unbalanced  
loop on a single cable, there are separate  
jacks for sends and returns, providing  
balanced connections throughout.  
+ v e  
s ig n a l  
-v e  
s ig n a l  
D -S u b P in  
C h a n n e l  
N u m b e r  
S c re e n  
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 directly  
into the mix bus.  
1
2
3
4
5
6
7
8
2 4  
1 0  
2 1  
7
1 8  
4
1 2  
2 3  
9
2 0  
6
1 7  
3
1 4  
2 5  
1 1  
2 2  
8
1 9  
5
1 5  
1
1 6  
2
N o t e : All u n d e s ig n a t e d p in s a re  
u n c o n n e c te d . All s c re e n c o n n e c tio n s  
a re jo in e d  
in s id e t h e u n it a n d  
c o n n e c te d to m e ta lw o rk e a rth .  
Outputs are provided on male XLR  
connectors: two for the main outs and  
two for your monitors.  
All of Sumo’s analogue audio connections  
operate at +4dBu, the professional  
standard, so you may need to ‘pad’  
outputs fed to semi-pro equipment.  
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O p e r a t io n a l M a n u a l  
AES/EBU on XLR, and S/PDIF on  
RCA (that’s a phono plug to you and I).  
Output on both connectors, for all sample  
rates is fixed at 24bit.  
P in c o n v e n t io n s  
To unbalance the outputs of the Sumo the  
-ve Pin should be connected to its  
adjacent 0v pin at Sumo’s output.  
A word clock input is also provided for  
situations where Sumo is not the clock  
master. This is connected via BNC.  
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.  
Inputs and outputs are implemented using  
advanced  
electronically  
balanced  
topologies and are fitted with extensive  
RFI rejection networks.  
D ig it a l In t e r fa c e s  
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:  
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O p e r a t io n a l M a n u a l  
H o o k in g U p  
H O O KIN G U P  
Before starting, it’s always a good idea to  
make sure that your monitor speakers are  
muted and/or turned off – this ensures  
that nothing gets popped or blown up  
when cables are being fiddled with and  
while power is turned on.  
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 Sumo’s digital conversion  
option, which produces top notch  
AES/EBU and S/PDIF straight  
out the back of the unit.  
A n a lo g u e C o n n e c t io n  
(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  
and will allow you to make the  
most of Sumo’s excellent  
headroom.  
If  
yo u  
a re  
b a c k  
c o n n e c tin g  
in to yo u r  
s tra ig h t  
D AW , yo u ll h a ve to m a ke  
!
s u re  
th a t  
th e  
tra c k yo u  
re c o rd o n is e ith e r m u te d o r n o t  
ro u te d to S u m o e ls e yo u ll g e t  
fe e d b a c k.  
fe e d b a c k.  
An d  
n o b o d y  
like s  
2. Plug the Monitor Outputs of  
Sumo into your monitor amplifier,  
or directly into your powered  
monitors. Make sure you have the  
monitor volume right down at this  
point, to protect the speakers  
when you switch them on.  
D ig it a l C o n n e c t io n  
(see Figure 2, below)  
4. If using a word clock master,  
connect the master source to the  
BNC connector on the digital card  
(see “Knobs, Buttons and Flashy  
Lights” for details on setting up  
your digital card).  
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.  
5. Connect the digital outputs to  
your digital master recorder or  
DAW.  
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O p e r a t io n a l M a n u a l  
H o o k in g U p  
S u m m in g  
In p u ts  
M ix  
In s e rts  
M o n it o r O u t p u t s  
M a in O u t p u t s  
F ig u r e 1 : A n a lo g u e C o n n e c t io n s  
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O p e r a t io n a l M a n u a l  
H o o k in g U p  
Clo c k M a s t e r  
W o rd Clo c k  
W o rd Clo c k  
AES /EBU  
S /P D IF  
F ig u r e 2 : D ig it a l C o n n e c t io n s  
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O p e r a t io n a l M a n u a l  
Kn o b s , B u t t o n s a n d F la s h y Lig h t s  
KN O B S , B U T T O N S A N D F LA S H Y LIG H T S  
In p u t S e c t io n  
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.  
M O N O B u t t o n s – 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. So the first two channel  
pairs (1/2 + 3/4) can each be mono’d,  
effectively panning them dead centre,  
right where you want them. Also, routing  
mono sources through a single channel  
saves outputs from your DAW.  
Be c a re fu l o f b o o s tin g w ith  
a n in s e rte d u n it w h e n in  
p o s t-d yn a m ic s m o d e a s th e  
lim ite r is n o lo n g e r a b le to  
p ro te c t th e o u tp u t le ve l. Th is is  
!
p a rtic u la rly  
im p o rta n t  
w ith  
d ig ita l g e a r, w h e re o ve rs m u s t  
b e a vo id e d a t a ll c o s ts .  
O u t p u t M e t e r – This meter will  
display system output level in dBu for  
either the main sum bus or two track  
input; whichever is selected in the monitor  
section. Or whichever source you are  
listening to, if you like. The legend  
beneath the meter shows how the  
analogue levels relate to digital output  
when the digital card is installed. If you  
wish to line the analogue inputs of your  
digital gear up to match the meters, 0dBu  
should equate to –24dBFS.  
M ix G a in – This control gives you a  
pre-dynamics gain trim from –20 to 0dB,  
so even if you’ve been especially  
normalize-happy whilst editing, you won’t  
have any problems with headroom, either  
within Sumo or, more likely, with any  
attached inserts.  
M IX IN S E R T S w itc h e s – 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.  
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O p e r a t io n a l M a n u a l  
Kn o b s , B u t t o n s a n d F la s h y Lig h t s  
M IX C O M P R E S S O R /P E A K LIM IT E R  
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 compressor of  
your own.  
D YN A M IC S In ’ S w it c h – Puts  
both compressor and limiter in circuit.  
When the dynamics are out, they are hard  
bypassed, clearing the signal path of any  
unnecessary components.  
Th re s h o ld – 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. This gives the  
compressor a gentler, more musical  
response.  
Us e h ig h ra tio s w ith h ig h  
th re s h o ld s to c o n tro l ro g u e  
p e a ks , o r lo w ra tio s w ith  
lo w th re s h o ld s to a p p ly  
g e n tle o ve ra ll c o m p re s s io n .  
a
m o re  
Ra tio  
Varies the amount of  
At t a c k – The time for which the input  
signal must rise above the threshold level  
before the compressor takes effect.  
compression. The numbers on the dial  
show the number of decibels that must be  
D y n a m ic s R e s p o n s e s  
Off  
Lim  
1.5:1  
2:1  
4:1  
8:1  
10:1  
C o m p T h re s h o ld  
Lim T h r e s h o ld  
In p u t  
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O p e r a t io n a l M a n u a l  
Kn o b s , B u t t o n s a n d F la s h y Lig h t s  
Be p a rtic u la rly c a re fu l o f p e a k  
Adjusting this will vary the way the  
compressor handles transient sounds.  
lim itin g : re d u c tio n in e x c e s s o f  
6 d B m a y w e ll c a u s e a d ve rs e  
e ffe c ts s u c h a s c h e w in g u p  
!
yo u r to p e n d .  
W h e re  
c o n tro l o f u n ru ly  
tra n s ie n ts is re q u ire d ,  
a
fa s te r a tta c k w ill c la m p  
d o w n o n p e a ks . H o w e ve r,  
M IX M A S T E R / M O N IT O R  
if la rg e r a m o u n ts o f g a in re d u c tio n  
S e c t io n  
a re  
a p p lie d ,  
u n n e c e s s a rily  
fa s t  
a t t a ck  
tim e s  
m a y a ffe c t  
h ig h  
fre q u e n c y c o n te n t.  
The P e a k Lim it e r ’s response is fast  
attack, fast release, and very hard. It has  
two functions: Firstly, as a protective  
device it can remove the dangerous peaks  
that can result in digital clipping.  
Secondly, it can be used to increase the  
average signal level (as your ear detects  
volume by averaging over time) and  
increase the perceived loudness of your  
mix within the confines of a recording  
medium: Great if you want your CDs to  
sound as loud as the pros’.  
M IX M A S T E R – Is the final gain  
control before the mix leaves the unit, or  
enters the digital card. This is useful as a  
final adjustment after any gain changes  
brought about by dynamics and inserts.  
‘Ex t In ’ S w it c h – Switches the  
external input into the monitor path. Use  
this to monitor playback from your master  
recorder, or perhaps to check your mix  
against reference material.  
G a in R e d u c t io n M e t e r in g Two  
independent meters show gain reduction  
at the compression and limiting stages, so  
you immediately know where any  
adjustments need to be made.  
M O N IT O R Vo lu m e – Say no more.  
M o n it o r M o n o S w it c h allowsyou  
to check phase coherence, etc. by  
summing the monitor outputs in mono.  
As  
a
ro u g h g u id e , 3 d B o f  
w ith fa irly  
re d u c tio n  
a
h ig h ra tio s h o u ld b e p re tty  
in a u d ib le . If yo u re lo o kin g  
m o re g e n e ra l s q u a s h in g ,  
fo r  
a
va lu e s o f u p to 6 d B w ith a lo w e r  
ra tio n (1 .5 o r 2 ) s h o u ld g ive s o m e  
g o o d re s u lts . H o w e ve r, b e a w a re  
th a t fo r th e lim ite r a n d fa s t a tta c k  
s e ttin g s  
o f  
th e  
c o m p re s s o r,  
re d u c tio n m a y o c c u r fa s te r th a n  
th e m e te rs c a n s h o w it, s o ta ke  
th is in to a c c o u n t a n d tru s t yo u r  
e a rs !  
© Audient v1.0 10/2004  
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O p e r a t io n a l M a n u a l  
Kn o b s , B u t t o n s a n d F la s h y Lig h t s  
D ig it a l S e c t io n  
S A M P LE R A T E – Rates of 44.1, 48,  
88.2, 96, 176.4 and 192kHz are supported.  
The desired sample rate can be selected by  
pressing the select button repeatedly  
whereby the sample rate will cycle through  
internal rates and then the external Word  
Clock source.  
Lo c k – 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  
s/pdif input (the one that’s connected to  
Sumo).  
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O p e r a t io n a l M a n u a l  
S u m o S u r g e r y (T r o u b le s h o o t in g )  
S U M O S U R G E R Y (T R O U B LES H O O T IN G )  
S y m p t o m s  
D ia g n o s is  
R e m e d y  
The power light is off.  
The fuse is blown.  
The power connector at the  
back contains the main fuse.  
Try changing this, using a  
correctly rated replacement  
for your local mains voltage  
(see back panel).  
The power light is off.  
The unit is set for the  
wrong mains voltage.  
Ensure that the red switch  
on the back of the unit  
matches your local mains  
voltage. Make sure the unit  
is disconnected before  
switching this.  
The power light is off.  
I can’t hear anything!  
The power cable is  
disconnected.  
Reconsider your chosen  
career. Perhaps you should  
retrain. Can you say “Would  
you like fries with that”?  
Could be one of many  
things.  
See the flowchart below.  
My external input source is  
coming through the mix bus.  
The external input source Ensure that the external  
is connected to an  
expander input.  
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 your device using its  
analogue connections.  
I’ve inserted another device and Sumo is capable of  
Use the mix gain control to  
drop the bus level so you  
don’t fry your outboard.  
it is distorting really badly.  
handling levels of up to  
+28dBu, unlike most  
outboard units, which  
can usually only take up  
to about +20dBu.  
My kick drum is only coming  
out of the left speaker.  
The channel carrying  
your kick drum is part of tracks you want centred to  
a stereo pair.  
In software, route all the  
inputs 1-4 of the Sumo.  
Then switch in Sumo’s  
mono buttons, and hey  
presto!  
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O p e r a t io n a l M a n u a l  
W h y c a n t I h e a r a n y t h in g ?  
S T A R T H ER E  
Put the  
Is there  
No  
Yes  
Yes  
"Insert In" button in  
the off position. Does  
this help?  
Is there an  
insert attached?  
anything showing on the  
main meters?  
No  
Yes  
No  
Check that the inserted  
device is passing audio and  
is connected correctly.  
Problem  
Solved.  
Make sure  
that your source is playing  
back. Does this  
help?  
Turn the  
monitor volume up.  
Does this help?  
Yes  
Turn  
the mix gain  
up. Does this  
help?  
No  
Ye
Yes  
Yes  
No  
No  
Check the  
connections from your playback  
device. Does this help?  
Check the connections to  
your monitor amplifier and/or speakers.  
Does this Help?  
Y
No  
Problem  
solved.  
No  
Hmmm. Disconnect and try again.  
If you still have problems, contact your  
distributor  
© Audient v1.0 10/2004  
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O p e r a t io n a l M a n u a l  
A c c e s s o r ie s  
A C C E S S O R IE S  
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.  
D e s c r ip t io n  
O r d e r c o d e  
3 Metre Analogue 25 pin D-Sub to 8 Female XLR  
Ideal for linking to audio interfaces and other Sumo units.  
3 Metre Analogue 25 pin D-Sub to 25 pin D-Sub  
Ideal for connection to Pro Tools HD systems.  
ASPDTF-803  
ASPDBD-310  
SUMO-AES  
Sumo 192kHz AES/EBU & S/PDIF digital output card  
S P EC IF IC A T IO N S  
Frequency Response  
Noise  
22Hz-22kHz +/- 0.1dB (-3dB @ 135kHz)  
< -92dBu  
> +28dBu  
120dB  
Maximum Input Level  
Dynamic Range  
Headroom (overload margin)  
Distortion  
> 24dB ref +4dBu, 27dB ref +4dBu in mix amp  
< 0.003% @ 1kHz, +28dBu  
< -80dB @ 1kHz  
Crosstalk  
Input Impedance  
Output Impedance  
Dimensions  
> 10kO differential  
< 75O electronically balanced  
480mm x 278mm x 44mm  
4.5kg  
Weight  
Power Consumption  
40 Watts  
In keeping with our policy of continuous improvement, Audient plc. Reserves the right to  
alter these specifications without prior notice.  
© Audient v1.0 10/2004  
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O p e r a t io n a l M a n u a l  
W a r r a n t y  
W A R R A N T Y  
Your Sumo comes with a manufacturers  
warranty for one year from the date of  
despatch to the end user.  
We will not provide warranty repair if in  
our opinion the fault has resulted from  
unauthorised  
modification,  
misuse,  
negligence, act of God or accident.  
The warranty covers faults due to  
defective materials used in manufacture  
and faulty workmanship only.  
We accept liability to repair or replace  
your Sumo as described above. We do not  
accept any additional liability.  
During this warranty period Audient will  
repair or at its discretion replace any faulty  
unit provided it is returned carriage paid  
to an authorised Audient service centre.  
This warranty does not affect any legal  
rights you may have against the person  
who supplied this product – it is  
additional to those rights.  
© Audient v1.0 10/2004  
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