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Ventilation Requirements
The Reference 80S employs forced air
cooling using an ultra-quiet internal fan,
located on the bottom cover near the
front of the chassis. This fan draws cool
air from under the unit, circulates the
air internally to cool components, and
exhausts the heated air from grilles on the
chassis top plate and transformer cover.
It is very important that cooling airflow to
this fan not be impeded in any way by
placing the unit on carpet or a soft surface
that might allow the Reference 80S to
settle into the surface and impede the
airflow.
A minimum of 8 inches (21cm) clearance
is required above the top of the amplifier.
If the unit is operated in an enclosure or
equipment rack, keep in mind the above
ventilation requirements to make certain
that adequate airflow above, to each side
and to the rear is provided.
The ambient operating temperature
should never exceed 86⁰F (30⁰C).
Improper installation will cause premature
component and /or tube failure and will
affect your warranty as well as the service
life of the unit. If you have any questions
about correct installation, please consult
with your authorized Audio Research
dealer or contact the factory at service@
audioresearch.com.
In Your System
To ensure normal component life and
safe operation, this unit should only be
operated in an upright position. The
special non-marring elastomer feet
provide adequate spacing and stability
only on a smooth, hard surface, and must
be on a dedicated shelf or amp stand
capable of supporting 62 lbs. Check with
the manufacturer of your support system
to be sure it is rated to handle this weight.
The Reference 80S power transformer
generates a magnetic field that could, in
some installations, induce hum in sensitive
electronics such as turntables, phono
cartridges and phono stage preamplifiers.
For this reason, we recommend that any
such products and their interconnecting
cables be kept a minimum of 12" away
from the Reference 80S.
Vacuum Tube Life Expectancy
The vacuum tubes in your Reference
80S have been burned in, tested and
electrically matched to provide the
best performance and reliability of your
amplifier. That said, vacuum tubes wear
out with use and must be periodically
replaced. The KT150 output tubes in the
Reference 80S should have an estimated
life of approximately 3000 hours, while
the smaller 6H30 tubes should have a
life expectancy of approximately 4000
hours. These life expectancies are only
approximate. Please consult with your
dealer or Audio Research customer
support for more information. Warning:
Tube replacement shall be done by
skilled or service personnel, or qualified
technician.
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