Classe Audio Surround Sound Processor SSP-800 - Manual (Page 12)

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voltage protection Th e SSP-800 Surround Sound Processor contains protection features that
prevent the processor from operating at dangerously high or low voltages. Th ese
features are incorporated to help protect the processor from dangerous power
surges and other power irregularities that could cause extensive damage to the
processor. Th
is circuitry guards against the following irregular supplied power
conditions.
• Startup Voltage: If the AC mains voltage is NOT within a range of
approximately –15% to +10% of its nominal value at startup, the
SSP-800 does not turn on. For example, a 120V AC service generally
requires the AC mains voltage to be no lower than 95V and no
higher than 135V in order for the processor to turn on and operate
normally.
• Over-voltage Condition during Operation: If the AC mains voltage
surges by roughly 10% or more during operation, the Surround
Sound Processor enters a protection mode and shuts down. Th
e
Standby LED fl ashes to indicate that the protection mode has been
engaged. An error message also displays on the LCD touch screen.
• Under-voltage Condition during Operation: If the AC mains voltage
sags by 15% or more, the Surround Sound Processor does continue
to play since the voltage irregularity won’t harm the processor, but
the sound quality may be degraded due to the compromised power
conditions. Th
e Standby LED fl ashes to indicate an irregular power
condition exists.
In such cases, normal operation can only resume when the following conditions
are met:
• Th e irregularity in the power input is no longer present.
• Th e SSP-800 is power cycled, to clear the protection mode.
Refer to the Troubleshooting section found later in this manual for more
information.