Basic Mixer Operation; Networking Multiple Mixers; Global/Local Functions - Shure SCM810 Manual

SCM810 Eight-Channel Microphone Mixer

BASIC MIXER OPERATION

1. Turn on the Power switch.
2. Adjust each channel level so that its Overload LED flickers only during
very loud speech or noise.
3. Turn unused channel controls full counterclockwise.
4. Adjust the SCM810 Master level control for the required output level, as
indicated by the output peak meter.

NETWORKING MULTIPLE MIXERS

If additional inputs are needed, more SCM810 mixers (as many as 50) can
be "linked" using supplied link cables. Such a configuration can provide up
to 400 microphone inputs.
To link multiple mixers, connect the LINK OUT of the first mixer to the LINK
IN of the next mixer, and so on (see Figure 8). Leave the LINK IN jack of the
first mixer and the LINK OUT jack of the last mixer unconnected.
LINKING MIXERS FIGURE 8

GLOBAL/LOCAL FUNCTIONS

The Global/Local switch selects which input channels appear at that linked
mixer's output. Set to the Global position, all input channels appear at that
mixer's output. Set to the Local position, only its own eight input channels
appear at that mixer's output. The Master level control, in any mode, only
controls the level of its own output.
The Master level control is independent of the Global/Local switch. The output
level of each mixer is affected only by its own Master control. All automatic
functions (such as Last Mic Lock-on and MaxBus) are connected on all linked
mixers and are not affected by the Global/Local switch.
An example of the possibilities of this setup is shown in Figure 9 Here two
SCM810s are set to Local, and the resulting sound distribution provides local
sound reinforcement while avoiding feedback. This is a simple "mix-minus"
setup. The third SCM810 is set to Global and feeds a tape recorder, At the
same time, the automatic functions (Last Mic Lock-On, etc.) remain common
to all mixers. The following table summarizes the mixer settings.
MIXER Link Global / Local Switch
A Local
B Local
C Global
6/13
Audio Output Contains...
A
B
A, B, C
5. If a headphone monitor is to be used, adjust the PHONES control knob
until the desired volume level is reached.The SCM810/E is now ready
to use.
NOTE: The SCM810/E mixer is fully automatic. For most applications, no
additional adjustments are required.
As long as the link jacks of all mixers are connected (out-to-in, sequentially,
leaving one Link In and one Link Out jack unconnected), the automatic mixing
functions will be shared by all units. All input signals appear at all linked
mixer outputs. There is no master/slave relationship.
The output controls and functions of each linked mixer are post-link and do
not affect the signals appearing at other linked mixer outputs. Each mixer's
Master level control only controls its own output. Each output can be used
independently.
NOTE: The actual off-attenuation in the 15 dB switch position increases as
more mixers are linked. This reduces excessive noise and reverberation
contributed by the increased number of attenuated microphones. In a linked
system, the Aux input of any mixer appears at each linked mixer's output.
See Internal Modifications to defeat the linking of Aux signals.
IMPORTANT: When using the logic terminals on linked mixers, connect the
LOGIC GROUND terminals of each unit together. Switching clicks may result
if this is not done.
Shure Incorporated
2017/10/09