AT500NC Manual
Rev-10/17
SAFETY INSTRUCTIONS
Read all the safety and operating instructions before connec-
tion or using the AT500
NC
amplifier.
All warnings on the unit and in this operating manual should
be adhered to.
All operating and use instructions should be followed.
Do not place/use the unit near water; for example, near a
bathtub, washbowl/sink, laundry tub, decorative water fea-
tures (waterfalls/fountains), in a wet basement or near a
swimming pool.
This unit is not intended for outdoor use.
This unit should be installed so that its location or position
does not interfere with its proper ventilation. For example, it
should not be situated on a bed, sofa, rug or similar surface
that may block its ventilation openings. It should also not be
placed in a built-in enclosure, such as bookcase or cabinet,
that may impede the flow of air through its ventilation open-
ings.
The unit should be situated away from heat sources such as
radiators, fireplaces, hot air ducts, heat registers, stoves and/
or other devices (including amplifiers) that produce heat.
The unit should be connected to a power-supply outlet only
of the voltage and frequency marked on its rear panel.
The AC power cord should be routed so that it is not likely to
be walked on or pinched, especially near the plug, conven-
ience receptacles or where the cord exits from the unit.
Clean the unit only as recommended in this instruction man-
ual.
The unit’s AC power cord should be unplugged from the
wall outlet when the unit is to be unused for a long period of
time.
Care should be taken so that objects do not fall, and liquids
are not spilled, into the unit through any openings.
The unit should be serviced by qualified service personnel
only when:
A. The power cord or plug has been damaged; or
B. Objects have fallen, or liquid has been spilled, into the
unit; or
C. The unit has been exposed to rain or liquids of any kind;
or
D. The unit does not appear to operate normally or exhibits
a marked change in performance; or
E. The device has been dropped or the enclosure damaged.
To prevent electric shock, do not use a ground lift plug/
adapter. Also, do not use the polarized plug with an exten-
sion cord, receptacle or other outlet unless all the blades can
be fully inserted to prevent blade exposure.
PLEASE READ FIRST
CAUTION:
To reduce the risk of electrical shock, do not
remove the cover (or back). No user serviceable parts inside.
Refer servicing to qualified service personnel.
WARNING:
To reduce the risk of fire or electric shock, do
not expose this appliance to rain or moisture.
The lightning flash with arrowhead, within an
equilateral triangle, is intended to alert the user
to the presence of uninsulated “dangerous volt-
age” within the product’s enclosure that may
be of sufficient magnitude to constitute a risk
of electrical shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user to the pres-
ence of important operation maintenance
(servicing) instructions in the literature accom-
panying the appliance.
California Proposition 65 Warning:
This product may con-
tain chemicals known to the Stat of California to cause can-
cer, or birth defects or other reproductive harm. (California
law requires this warning to be given to customers in the
State of California.)
PRECAUTIONS
The AT500
NC
amplifier is a wide-band design with substan-
tial power output capability. Certain precautions must be
taken to ensure proper operation.
1. Never expose the amplifier to moisture.
2. Never plug an input cable into the amplifier while the
unit is turned on.
3. Never apply the “thumb test” (touching the “hot” lead of
the input cable with your finger) to the tip of the input
cable or input jack of the ATI amplifier. RF rectifica-
tion and/or hum will be created and could cause damage
to the loudspeakers. ATI will not be responsible for
damage to the loudspeakers due to improper use of the
equipment.
4. Under no circumstances should the output terminals of
the AT500
NC
be short-circuited.
5. Avoid restricting the airflow around the AT500
NC
ampli-
fier. Good airflow is necessary to ensure proper cooling
and trouble-free operation.
6. Ensure that the rated power handling of the loudspeakers
connected to the AT500
NC
amplifier can handle the out-
put power of the amplifier. The warranty of the
AT500
NC
does not cover damage to loudspeakers with
inadequate power handling capability.
7. Do not stack other system components or any other ma-
terials on top of the AT500
NC
amplifier. The amplifier is
convection cooled and air must be free to circulate
around its chassis.
1
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
