Manual-1
OPERATORS MANUAL
SM82S
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. That’s usually OK, and with a very few exceptions, damage is unlikely to result from such procedures with the SM82S.
This product is quite obvious: Input
LEVEL
controls make Inputs louder or not, the stereo
SEND
s 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 SM82S, 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 off. If they come on, you are overdoing it and distortion will result.
SM82S CONNECTION
When connecting the SM82S to other components in your
system for the first time,
leave the power supply for last
. This 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 rane.com).
INPUTS
The SM82S’s Inputs are unbalanced. This means that standard
¼" connectors on the ends of any good quality cable will work
well between your signal sources, signal processing and ampli-
fication.
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.
The 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. This allows the use
of either stereo or mono sources.
OUTPUTS
The SM82S offers balanced main outputs only. This 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 significant
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. The SM82S easily accom-
modates all of these varieties. If your effect is mono on both
ends, connect its input to the SM82S LEFT LOOP SEND and
the effect’s output to the SM82S LEFT LOOP RETURN. This
configuration will sum Right and Left Loop Outputs to the
mono effect input and will sum the mono effect 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 SM82Ss 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
first 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 first 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 mix-
er. The expand Inputs and Outputs are unbalanced signals, so to
prevent hum,
keep expand cables under 10 feet (3 meters) in
length.
WEAR PARTS:
This product contains no wear parts.
1
2
SM82S
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 PAN
PAN
PAN
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
POWER
0
5
10
0
5
10
0
5
10
0
5
10
0
5
10
0
5
10
0
5
10
0
5
10
R
C
L
R
C
L
R
C
L
R
C
L
R
C
L
R
C
L
R
C
L
R
C
L
R
C
L
R
C
L
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
OL
OL
OL
OL
OL
OL
OL
OL
OL
OL
