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Safety
Before using your Stewart Audio Inc. Power Amplifier, please read this
Owner’s Manual
carefully to ensure optimum trouble –free performance.
WARNING: TO REDUCE THE RISK OF ELECTRICAL SHOCK,
DO NOT EXPOSE THIS AMPLIFIER TO RAIN OR MOISTURE.
DANGEROUS HIGH VOLTAGES ARE PRESENT INSIDE THE
ENCLOSURE. DO NOT OPEN THE CABINET. REFER
SERVICING TO QUALIFIED PERSONNEL ONLY.
The lighting bolt within arrowhead symbol, within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
“dangerous voltage” within the product’s enclosure that may be
of sufficient magnitude to constitute a risk of electrical shock to
person.
The exclamation point within an equilateral triangle, is intended
to alert the user to the presence of important operating and
maintenance (servicing) instruction in the literature
accompanying the appliance.
Important Safety Instruction – Please Read Prior to Product
Installation.
1. All of the safety and operating instructions should be read before the
amplifier is operated. Retain these instructions for future reference.
All instructions should be followed; all warnings on the amplifier and
in the operating instructions should be adhered to.
2.
This amplifier should not be used near water, for example, near a
bathtub, in a wet basement, near a swimming pool, etc.
3.
The amplifier should be situated so that it’s location and position does
not interfere with its proper ventilation. For example, the amplifier
must not be placed on a rug, bed, sofa or similar surface that impedes
airflow across the chassis. Airflow through the ventilation openings
should be unobstructed.
4
Troubleshooting Reference Chart
Symptom:
Recommended Action:
No output: Power indicator LED is off
Be sure power outlet is “live”. Be sure
(Note: there is a normal delay of up
power switches are “on”. Check circuit
To 1 minute when amp is first
breaker. Wait 1 minute after plugging
plugged in or circuit breaker is reset.)
in cord or resetting breaker.
No output: Power indicator LED
This indicates a short-circuit
Cycles on and off.
Condition on the output. Disconnect
speaker wires and turn amplifier
power switch on. If amp stays on, the
problem is in the output wiring or
speakers.
Power indicator on: no output from
Check input level controls, input and
one or both channels.
Output cables, input signal and
speakers. If operating in bridged mode,
be sure connections are made to
Channel 1’s inputs.
Low volume in one or both channels.
Check input level controls, input signal
levels, and input wiring. Be sure both
speakers are the same impedance.
Amplifier overheats and/or shuts off.
Review section on Thermal
Considerations. Note that overdriving
amplifier for a long period can cause
thermal shutdown. Note that
overdriving amplifier hard enough can
cause momentary shutdown.
Distorted output.
Check signal level and signal source.
Check speaker(s).
Noise on output.
Check signal source for noise. If you
are running input cables of more than 30
feet, balanced lines can reduce noise
levels considerably. See sections on Input
and Output wiring for more information
on wiring balanced lines.
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