Filter
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p.9
installation
2
powering
Unless otherwise specified when ordered, Pro II amplifiers shipped to cus-
tomers are configured as follows:
North America 90–255
VAC
@
50–60Hz
Europe 180–255 VAC
@
50–60Hz
Asia 180–255 VAC
@
50–60Hz
Australasia 180–255 VAC
@
50–60Hz
South America 90–255 VAC
@
50–60Hz
Japan 90–255 VAC
@
50–60Hz
maintenance
A Pro II Series amplifier requires no routine maintenance other than the
occasional cleaning or replacement of the fan intake filters on the rear of the
amplifier.
(This operation does not require any tools.) Filters must be kept
clear and clean to ensure proper ventilation through the unit.
If the amplifier is used in an extremely dusty or smoky environment, the fil-
ter should be cleaned or changed frequently and the unit should be period-
ically “blown free”
(using compressed air) of any foreign matter that may have
penetrated the filter.
Users will not need to make any internal adjustments to the amplifier dur-
ing its lifetime. There are no user-serviceable parts or adjustments that
require opening the power amplifier.
Always turn off and dis-
connect the amplifier from
mains voltage before mak-
ing audio connections.
As an extra precaution, have
the attenuators turned down
during power-up.
a
Cover removal exposes
the risk of shock, so refer
all servicing to qualified
service technicians autho-
rized by Crest Audio.
a