Audio Research I/50, Руководство пользователя

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Vacuum Tubes
It is recommended that you replace the vacuum tubes of your I/50 in sets. All of the tubes in your amplifier have been matched to have
similar operating characteristics, to provide the best sound quality and reliability. 6550WE tubes should be replaced at approximately
2000 hours. 6922 tubes should be replaced before 4000 hours. Upon replacing a power tube or tube set, the I/50 must be biased by a
trained technician to ensure proper operating values.
Servicing
Because of its careful design and exacting standards of manufacture, your I/50 amplifier 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 amplifier, 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’ found under ‘Support’ at the top right of the home page.
Caution
Your I/50 amplifier contains sufficient levels of voltage and current to be lethal. Do not tamper with components or parts inside the unit.
Even with the power turned off, a charge remains in the energy storage capacitors for some time.
MAINTENANCE