Manual-1
OPERATORS MANUAL SM 82S
STEREO MIXER
QUICK START
No one likes to read manuals. Everyone likes to just start pushing buttons and turning knobs until the desired results magically
emerge. at’s usually OK, and with a very few exceptions, damage is unlikely to result from such procedures with the SM 82S.
is product is quite obvious: Input LEVEL controls make Inputs louder or not, the stereo SENDs make things happen at the
LOOP SEND outputs, and so on. No real magic there. You should be aware, however, that if you want to connect a mono source to
the SM 82S, use only the LEFT Input of a channel so that the mono source will drive both the Left and the Right channels.
Set the levels of the mixer so that the red lights stay o. If they come on, you are overdoing it and distortion will result.
SM 82S CONNECTION
When connecting the SM 82S to other components in your
system for the rst time, leave the power supply for last. is will
give you a chance to make mistakes and correct them before any
damage is done to your fragile speakers and ears.
If you are making your own cables, or experience any hum
problems after hookup, please refer to the RaneNote, “Sound
System Interconnection” (supplied with this manual and avail-
able at www.rane.com).
INPUTS
e SM 82S’s Inputs are unbalanced. is means that standard
¼" connectors on the ends of any good quality cable will work
well between your signal sources, signal processing and ampli-
cation. For best rejection of nasty things like hum and RF, keep
input cables under 10 feet (3 meters) in length.
Most sources give you the choice of stereo or mono output.
e mixer gives you the same choice. You will note that nomen-
clature has been placed beneath the input jacks indicating which
is RIGHT and which is LEFT (MONO). If a source is plugged
only into the Left jack and not into the Right, both Right and
Left channels will be fed with the Left Input. is allows the use
of either stereo or mono sources.
OUTPUTS
e SM 82S oers balanced main outputs only. is means that
you may use them as either balanced or unbalanced, the choice
being made by the way the connectors are wired. It’s a good idea
to always use a TRS or stereo connector in the outputs no matter
which mode you are using. If a “mono” connector is used, insert-
ing it into the output will short the ring (–) to ground and could
conceivably cause a small amount of distortion to be placed on
the tip (+). While this is not destructive, it may be signicant
enough to be audible. Balancing therefore requires that both tip
(+) and ring (–) be wired to the following device. Unbalanced
requires only tip and sleeve connected, leaving the unused ring
open.
EFFECTS DEVICES
External devices which might be used could be either mono in
and out, while some may be mono in and stereo out, while still
others may be stereo on both ends. e SM 82S easily accom-
modates all of these varieties. If your eect is mono on both
ends, connect its input to the SM 82S LEFT LOOP SEND and
the eect’s output to the SM 82S LEFT LOOP RETURN. is
conguration will sum Right and Left Loop Outputs to the
mono eect input and will sum the mono eect output to the
Left and Right Input buses. A mono-in stereo-out device would
connect to the loop outputs in the same way; however the stereo
outputs connect to the respective LEFT and RIGHT LOOP
RETURNS.
EXPANDING
Connecting two or more SM 82Ss together to achieve more than
eight stereo Inputs requires that a stereo cable (tip, ring, sleeve)
be connected between the MAIN EXPAND OUTPUT of the
rst mixer and the MAIN EXPAND INPUT of the second.
All 32 inputs will then appear at the main OUTPUT of mixer
number two. Only the rst sixteen Inputs will be available at the
main Outputs of mixer number one. Should you wish to have all
Loop buses tied, connect the LOOP SENDS of mixer one to the
LOOP EXPAND INPUT of mixer two. All sixteen stereo sends
will then become active at the LOOP SENDS of the second
mixer.
WEAR PARTS: is product contains no wear parts.
12
SM 82S
STEREO MIXER
SEND
PAN
SEND
PAN
3
SEND
PAN
4
SEND
PAN
5
SEND
PAN
6
SEND
PAN
7
SEND
PAN
8
RETURN OUTPUT
SEND
PANPAN PAN
OL OL OL OL OL OL OL OL OL OL
LEVEL LEVEL LEVEL LEVEL LEVEL LEVEL LEVEL LEVEL LEVEL LEVEL POWER
0
2
4
8
6
0
2
4
8
6
10 0
2
4
8
6
10 0
2
4
8
6
10 0
2
4
8
6
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
10 10
0
5
10
R
C
L
0
5
10
R
C
L
0
5
10
R
C
L
0
5
10
R
C
L
0
5
10
R
C
L
0
5
10
R
C
L
0
5
10
R
C
L
0
5
10
R
C
L
R
C
L
R
C
L
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