Audio Research I/50, Manual

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17
Start-Up
• Secure all rear-panel connections between I/50, input sources, and speakers. For the speaker connections, it is recommended that the
right channel connections (bottom) be connected first, then the left channel (top) be connected last. If you are using spade terminations,
pay special attention to ensure the tips of the connectors do not touch and cause an electrical short. Ensure all vacuum tubes are
installed and properly seated in their sockets.
• Plug three-prong power cord from rear of chassis into grounded AC wall outlet. Once power is applied to the unit, the control circuitry
will default to standby, illuminating the LexieTubes® with a single dot in the center of each tube. The unit is ready to be powered on.
• Press the power button (either on the remote or front panel). The amplifier will begin the warm-up sequence, where a 50 second count-
down will show on both LexieTubes®. The amplifier will be in mute during the warm-up time. After the warm-up sequence is complete,
the unit will be in mute, ready for use.
• If powering for the first time after connecting to an AC power source, the default state is input S1 and volume at 0. When turning the I/50
on from standby, the input will be set to the last used input.
• Select input source either with the left knob, or the remote input select. Adjust the volume using the right knob, or the volume (-), (+), or
mute (x) with the remote control.
Shut-Down
• Press Power button to turn I/50 off.
• The displays show a single dot in the middle of each LexieTube® once the amplifier is in standby.
Caution: After Shut-down, please wait at least three minutes before turning the I/50 on. This time is required to allow the energy in the
power supply to dissipate. Turning the unit on prematurely could cause a tube arc or other issue.
Note: Standby power maintains power only for the control system. It is always indicated by a single dot on each LexieTube®. When the
amplifier is not connected to AC power, the dots in the middle of the display tubes will not be present.
Break-in
All quality stereo equipment benefits from a break-in period; during this time, the various components, wiring, and solder connections
change as electrical signals pass through them. While the I/50 will sound fantastic out of the box, and it will only improve with continued
use.
OPERATION