Crest Audio CPX 4, Operating Manual

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4
SAVE THESE INSTRUCTIONS
1 Save the carton and packing materials!
Should you ever need to ship the
unit, use only the original factory
packing.
For replacement packaging, call Crest
Customer Service Department directly.
2 Read all documentation before oper-
ating your equipment. Retain all doc-
umentation for future reference.
3 Follow all instructions printed on
unit chassis for proper operation.
4 Never hold a power switch or cir-
cuit breaker in the "ON" position if
it won’t stay there by itself!
5 Do not use the unit if the electrical
power cord is frayed or broken.
The power supply cords should be
routed so that they are not likely to
be walked on or pinched by items
placed upon or against them.
6 Always operate the unit with the AC
ground wire connected to the elec-
trical system ground. Precautions
should be taken so that the means
of grounding of a piece of equipment
is not defeated.
7 Damage caused by connection to
improper AC voltage is not covered
by any warranty. Mains voltage must
be correct and the same as that print-
ed on the rear of the unit.
8 Do not ground any hot (red) terminal.
Never connect a hot (red) output to
ground or to another hot (red) output!
9 Power down and disconnect units
from mains voltage before making
connections.
10 Do not drive the inputs with a sig-
nal level greater than that required
to enable equipment to reach full
output.
11 Do not run the output of any amplifier
channel back into another channel’s
input.
Do not parallel- or series-connect
an amplifier output with any other
amplifier output.
Crest is not responsible for damage
to loudspeakers for any reason.
12 Do not connect the inputs or out-
puts of amplifiers to any other
voltage source such as a battery,
mains source, or power supply,
regardless of whether the ampli-
fier is turned on or off.
13 Connecting amplifier outputs to oscil-
loscopes or other test equipment
while the amplifier is in bridged mono
mode may damage both the amplifier
and test equipment!
14 Do not spill water or other liquids
into or on the unit, or operate the
unit while standing in liquid.
15 Do not block fan intake or exhaust
ports.
Do not operate equipment on a
surface or in an environment which
may impede the normal flow of air
around the unit, such as a bed,
rug, weathersheet, carpet or com-
pletely enclosed rack.
16 If the unit is used in an extremely
dusty or smoky environment the
unit should be periodically blown
free of foreign matter.
17 Do not use the unit near stoves,
heat registers, radiators or other
heat-producing devices.
18 The equipment power cord should be
unplugged from the outlet when left
unused for a long period of time.
Service Information
Do not remove the cover!
Removing the cover will expose you
to potentially dangerous voltages.
There are no user-serviceable parts
inside.
Equipment should be serviced by
qualified service personnel when:
A. The power supply cord or the plug
has been damaged.
B. The equipment has been exposed to
rain.
C. The equipment does not appear to
operate normally or exhibits a marked
change in performance.
D. The equipment has been dropped or
the enclosure damaged.
To obtain service:
contact your nearest Crest Audio
Service Center, Distributor,
Dealer or contact Crest Audio at
601.483.5365 USA or visit www.
crestaudio.com for additional
information.