Specifications

1
English –
SHURE SCM268
DESCRIPTION
The Shure Model SCM268 is a transformer-balanced, four-
channel microphone mixer. Its simple, compact design delivers
superior performance and exceptional sound quality with low
noise and a flat frequency response.
Versatile in all types of applications, the SCM268 integrates
transformer-balanced XLR inputs, a switchable microphone/line
level transformer-balanced XLR output, phono jack inputs and
output, phantom power, and an auxiliary input channel. It can
function as a primary or add-on mixer for sound reinforcement,
recording, broadcast, or audio-visual presentation systems.
With the supplied hardware, the mixer’s half-rack chassis
mounts securely in single or dual rackmount installations. For
fixed installations, the SCM268 can be fastened on or below a
shelf, counter, or tabletop.
FEATURES
S Four transformer-balanced microphone inputs
S Transformer-balanced output—switchable mic/line level
S Five –10 dB line-level inputs
S Six-segment LED output level meter
S Built-in 12-volt phantom power
S Internal power transformer
S Built-in low-cut filter on microphone inputs (below 80 Hz)
FRONT PANEL
ÍÎ
Ê
ËÌ
Ê Gain Controls (1–4). Adjusts gain for microphone level in-
puts and auxiliary level inputs 1–4.
Ë Auxiliary Channel Gain Control (AUX IN). Adjusts the aux-
iliary channel input gain.
Ì Output Meter. LED meter indicates peak output signal level.
Í Master Gain Control (MASTER). Adjusts overall output
level.
Î Power Indicator (POWER). This LED illuminates when the
unit is plugged in and receiving power.
NOTE: The SCM268 does not have a power switch. To turn
the unit off, unplug the power cord or use an external power
strip with a switch. However, it can remain plugged in as it
uses very little power when idle.
REAR PANEL
Ñ
Î
ÊË ÍÌÏ
Ð
Ê Power Connector. Accepts 100–120 Vac (SCM268) or
220–240 Vac (SCM268E).
Ë Output Connector (MIC/LINE OUT). Transformer-bal-
anced XLR output connector. Switchable between line and
microphone level.
Ì Output Level Switch (MIC/LINE OUT). Recessed switch
changes the signal level of the XLR output connector:
In = Microphone Level
Out = Line Level
Í Auxiliary Output Connector (AUX OUT). Phono jack
feeds consumer-level audio equipment. Not affected by
MIC/LINE switch.
Î Auxiliary Level Inputs (AUX LEVEL INPUTS, 1–4). Phono
jacks connect to consumer-level audio sources.
Ï Auxiliary Input Channel (AUX IN). A dedicated auxiliary-
level input for the auxiliary channel.
Ð Phantom Power Switch (12V PHANTOM). Recessed
switch turns on phantom power for microphone inputs 1–4.
Ñ Microphone Level Inputs (MIC LEVEL INPUTS). Trans-
former-balanced, microphone-level XLR inputs.