Rocktron HUSH Super C - Manual (Page 5)

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OPERATING PRECAUTIONS
NOTE: IT IS VERY IMPORTANT THAT YOU READ THIS SECTION
TO PROVIDE YEARS OF TROUBLE FREE USE. THIS UNIT
REQUIRES CAREFUL HANDLING.
All warnings on this equipment and in the operating instructions should
be adhered to and all operating instructions should be followed.
Do not use this equipment near water. Care should be taken so that
objects do not fall and liquids are not spilled into the unit through any
openings.
The power cord should be unplugged from the outlet when left unused
for a long period of time.
DO NOT ATTEMPT TO SERVICE THIS EQUIPMENT. THIS
EQUIPMENT SHOULD BE SERVICED BY QUALIFIED PERSONNEL
ONLY. DO NOT MAKE ANY INTERNAL ADJUSTMENTS OR
ADDITIONS TO THIS EQUIPMENT AT ANY TIME. DO NOT TAMPER
WITH INTERNAL ELECTRONIC COMPONENTS AT ANY TIME.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY VOID THE
WARRANTY OF THIS EQUIPMENT, AS WELL AS CAUSING SHOCK
HAZARD.
POWER REQUIREMENTS
This unit accepts power from the 9VAC/2A adaptor supplied with the
unit. This 9 volt RMS AC voltage is internally processed by a voltage
doubler which generates a bipolar ±15 volts to maintain the headroom
and sound quality of professional, studio quality equipment. Using an
external power source such as this minimizes excessive noise and
hum problems often associated with internal transformers, providing
optimal performance for the user.
OPERATING TEMPERATURE
Do not expose this unit to excessive heat. This unit is designed to
operate between 32° F and 104° F (0° C and 40° C). This unit may
not function properly under extreme temperatures.