Rane SM 82 Operator's Manual

Manual-1

OPERATORS MANUAL

SM 82

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 only a very few exceptions, damage is unlikely to result from such proce-

dures with the SM 82.

This 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 82, 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.

Never connect anything except an RS 1 or other approved Rane AC power supply to the thing that looks like a

telephone jack on the rear of the SM 82. This is an AC input and requires some special attention if you do not have an

operational power supply 

EXACTLY

 like the one that was originally packed with your unit. See the full explanation of the

power supply requirements elsewhere in this manual.

SM 82 CONNECTION

When connecting the SM 82 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, ears,

headphones, et al.

INPUTS

The SM 82’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 amplification. Most of the above mentioned sources give

you the choice of stereo or mono output. The mixer gives you

the same choice. You will note that nomenclature 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 SM 82 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, inserting 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.

Balanced operation therefore requires that both tip (+) and

ring (–) be wired to the following device. Unbalanced

requires only tip and sleeve connected. The unused ring

should be left open.

EFFECTS DEVICES

External devices which might be used with the SM 82

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 SM 82 easily accommodates all of these varieties. If your

effect is mono on both ends, connect its input to the SM 82

LEFT LOOP SEND and the effect’s output to the SM 82

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 SM 82s together to achieve more

than eight stereo Inputs requires that a stereo cable (tip, ring,

sleeve) be connected between the MAIN EXPAND OUT of

the first mixer and the MAIN EXPAND IN 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 IN of mixer two. All sixteen stereo

sends will then become active at the LOOP SENDS of the

second mixer.

WEAR PARTS: This product contains no wear parts.