Shure Incorporated
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DIP Switch Functions
The rear panel DIP switches, shown in Figure 1, provide the functions listed in the table below.
Last Mic Lock-On
XLR Output Level
Limiter
12V Phantom Pow-
er
Switch Number
1
2
3
4
Switch Up
All mics off after
hold time
Mic Level
ON
ON
Switch Down
ON*
Line Level
OFF*
OFF*
* Factory setting
Last Mic Lock-On
Keeps the most recently activated microphone turned on until another microphone is activated. When defeated,
microphones turn off after their default hold time. XLR Output Level: Sets the level of the XLR output to line or mi-
crophone level. Make sure the output level matches the input level of the device connected to the SCM410.
Note:
The output level does not affect the auxiliary output (AUX OUT) level.
Limiter
Activates the output limiter and sets it to a default threshold of +16 dBu (see
Internal Modifications
Addendum for
other threshold settings).
12V Phantom Power
When this switch is in the ON position, the SCM410 provides 12Vdc phantom power to each XLR microphone in-
put. This function is particularly useful when using condenser microphones, since most condenser microphones
require phantom power.
Note: Phantom power does not affect the operation of balanced dynamic microphones. They can be connected to
the SCM410 in combination with condenser microphones that use phantom power. For instructions on how to dis-
able phantom power by channel, refer to the
Internal Modifications
Addendum.
Installation
Rack Mounting
The SCM410 is supplied with hardware for mounting one or two units to a 19-inch audio equipment rack. The
hardware can also be used to rack mount other Shure products, including the SCM268, SCM262, DFR11EQ, and
the DP11EQ.
