Shure Incorporated
10/25
Linking Multiple Mixers
If more than four inputs are needed, multiple Shure SCM410, FP410, or SCM810 mixers can be linked by connect-
ing the LINK OUT of the first mixer to the LINK IN of the next mixer, and so on. See Figure 2. Leave the LINK IN
jack of the first mixer and the LINK OUT jack of the last mixer unconnected.
When properly linked, the mixers will operate as a system. Automatic mixing functions will be shared by all units.
All input signals appear at all linked mixer outputs. Each mixer's Master level control only controls its own output.
However, actual off-attenuation will increase as more mixers are linked. This reduces excessive noise and rever-
beration contributed by the increased number of microphones.
Important: When using logic terminals on linked mixers, connect the LOGIC GROUND terminals of each
unit together.
Note:
SCM410 link connections are unbalanced. To minimize hum and noise, avoid using longer link cables. Use
high quality, shielded cable, and keep them away from sources of magnetic or electrical noise, such as power
transformers or light dimmers. To minimize ground currents, make sure linked mixers are connected to the same
AC power mains.
FIGURE 1: LINKED SCM410 AND SCM810 MIXERS
