Crest Audio CA18 User's Manual | Page 2

Crest Audio Musical Instrument Amplifier User's Manual - CA18.
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1. Save the carton and packing material

even if the equipment has arrived in
good condition. 
Should you ever need
to ship the unit, use only the original
factory packing.

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. Do not spill water or other liquids

into or on the unit, or operate the unit
while standing in liquid.

5. Make sure power outlets conform to

the power requirements listed on the
back of the unit.

6. 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, paying particular atten-
tion to cords and plugs, convenience
receptacles, and the point where they
exit from the appliance.

7. Always operate the unit with the AC

ground wire connected to the electri-
cal system ground. Precautions should
be taken so that the means of ground-
ing of a piece of equipment is not
defeated.

8. Mains voltage must be correct and

the same as that printed on the rear
of the unit. 
Damage caused by connec-
tion to improper AC voltage is not cov-
ered by any warranty.

9. Have gain controls on amplifiers

turned down during power-up to pre-
vent speaker damage if there are high
signal levels at the inputs.

10. Power down & disconnect units from

mains voltage before making connec-
tions.

11. Never hold a power switch in the

“ON” position if it won’t stay there
itself! 

12. Do not use the unit near stoves, heat

registers, radiators, or other heat
producing devices.

13. 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 completely
enclosed rack. If the unit is used in an
extremely dusty or smoky environ-
ment, the unit should be periodically
“blown free” of foreign matter.

14. Do not remove the cover. Removing

the cover will expose you to potentially
dangerous voltages. There are no user
serviceable parts inside.

15. Connecting amplifier outputs to

oscilloscopes or other test equipment
while the amplifier is in bridged mode
may damage both the amplifier and test
equipment!

16. Do not drive the inputs with a signal

level greater than that required to
drive equipment to full output.

17. Do not connect the inputs / outputs

of amplifiers or consoles to any other
voltage source, 
such as a battery,
mains source, or power supply, regard-
less of whether the amplifier or console
is turned on or off.

18. Do not run the output of any amplifi-

er channel back into another chan-
nel’s input. Do not parallel- or
series-connect an amplifier output
with any other amplifier output.
Crest Audio is not responsible for dam-
age to loudspeakers for any reason.

19. Do not ground any red (“hot”) ter-

minal. Never connect a “hot” (red)
output to ground or to another “hot”
(red) output!

20. Non-use periods. The power cord of

equipment should be unplugged from
the outlet when left unused for a long
period of time.

21. Service Information

E q u i p m e n t

should be serviced by qualified service
personnel when:

A. The power supply cord or the plug

has been damaged;

B. Objects have fallen, or liquid has

been spilled into the equipment;

C. The equipment has been exposed to

rain;

D. The equipment does not appear to

operate normally, or exhibits a
marked change in performance;

E. The equipment has been dropped,

or the enclosure damaged.

22. To obtain service, contact your nearest

Crest Audio Service Center,
Distributor, Dealer, or Crest Audio at
201.909.8700 (USA). 

Important Precautions

This symbol is used to alert the oper-
ator to follow important operating
procedures and precautions detailed
in documentation.

This symbol is used to warn opera-
tors that uninsulated “dangerous volt-
ages” are present within the equip-
ment enclosure that may pose a risk
of electric shock.

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