Audio Research HIGH DEFINITION PH9, Manual

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18
Vacuum Tubes
It is recommended that you replace the
6H30 vacuum tubes of your PH9 in sets.
All of the tubes in your preamplifier
have been matched to have similar
operating characteristics, to provide
the best sound quality and reliability.
Servicing
Because of its careful design and exacting
standards of manufacture, your PH9
preamplifier should normally require
only minimal maintenance to maintain
its high level of performance.
Should you need service, please contact your
authorized Audio Research dealer or other
qualified technician. Additional questions
regarding the operation, maintenance
or servicing of your preamplifier, please
contact the Customer Support Department
of Audio Research Corporation at
service@audioresearch.com or call
763-577-9700. You may also initiate a
service request by visiting the Audio
Research website
(www.audioresearch.com) and
selecting ‘Service Repair’ at the
top right of the home page.
Caution
Your PH9 preamplifier contains sufficient
levels of voltage and current to be lethal.
Do not tamper with a component or
part inside the unit. Even with the power
turned off, a charge remains in the energy
storage capacitors for hours, or even days.
Cleaning
To maintain the new appearance of this
preamplifier, occasionally wipe the
front panel and top cover with a soft,
damp (not wet) cloth to remove dust.
A mild, non-alkaline soap solution
may be used to remove fingerprints or
similar smudges. Cleaners containing
abrasives should not be used as they
will damage the anodized finish of the
front panel. A small, soft paintbrush is
effective in removing dust from bevels,
and other features of the front panel.
Disposal and Recycling Guidelines
To dispose of this electronic product, do
not place in landfill. In accordance with
the European Union Waste Electrical
and Electronic Equipment (WEEE)
directive effective August 2005, this
product may contain regulated materials
which upon disposal require special
reuse and recycling processing.
Please contact your dealer or importing
distributor for instructions on proper
disposal of this product in your country.
Or, contact Audio Research Corporation
(763.577.9700) for the name of your
importing distributor and how to contact
them. Packing and shipping materials
may be disposed of in a normal manner.
Maintenance