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Operation
SC Amp includes a 100 W power brick which accepts standard IEC, C13 AC power cords. Use only the
power brick supplied by Listen, Inc.
Use the appropriate IEC power cord terminated for your AC mains supply.
Over Temperature Standby
When the amplifier temperature limit is exceeded, the power indicator will turn Red, the output is muted and
the amplifier goes into Standby mode to allow it to cool down. After a few minutes of cooling the amplifier
will return to normal operating mode and the indicator will turn green.
Thermal Shutdown
If the unit is operated in an enclosed environment with other heat sources, the unit may turn itself off and the
power indicator will go dark, even though the switch is depressed. Set the power switch to the off position
and allow the unit to cool down for several minutes before turning on again. If this does not reset the unit,
disconnect AC power from the power brick for several minutes and then try again.
Short Circuit Monitoring
The output of SC Amp is protected in case of a short across the amplifier output. It's fast, automatic, and
does not trigger the thermal monitor since the internal temperature does not necessarily rise very much
during a short circuit condition.
Calibration
The gain of SC Amp is fixed at 26.4 dB (±0.1 dB).
SC Amp should be calibrated in SoundCheck in
order to determine the gain and obtain the most
accurate impedance measurement.
Follow the Amplifier Calibration procedure in the
Calibration Chapter of the SoundCheck manual.
The SoundCheck Calibration Configuration is shown
in
Figure
7-1.
The calibration process precisely determines the
gain of SC Amp, updates the Sensitivity field, and
creates correction curves for the response and
phase of SC Amp including the output of the audio
interface.
Figure 7-1: Calibration
TM
SC Amp
Manual
Operation
13
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