Audio Research I/50, Manual

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15
A.C. Power Connection
It is important that the I/50 be connected via its supplied 15 amp IEC 14-gauge power cord to a secure, dedicated A.C. power receptacle.
Never connect the I/50 to convenience power receptacles on other equipment. Only use the power switch on the top panel of the I/50
for On/Off control of the amplifier or the power switch on the remote control.
The AC power source for the I/50 amplifier should be capable of supplying 15 amperes for 100 or 120 volt units, or 10 amperes for 220 or
240 volt units.
The I/50 uses a grounding system that does not require a ground lifter adapter plug on the A.C. power cord to minimize hum. The power
cord supplied with the I/50 has a standard grounding plug to provide maximum safety when properly connected to a grounded wall
receptacle. If there is any question regarding proper grounding procedures in your installation, seek help from a qualified technician.
Caution should be taken before using custom after-market power cords: they must be at least 14-gauge and have a standard grounding
plug properly installed. These power cords are to be used with caution, at the sole risk of the owner. If other AC powered equipment is
used with the I/50 it may be necessary to use ‘ground lifter’ adapters on the power plugs of that equipment to minimize system hum.
Generally, the lowest hum is achieved when the only direct connection between audio common ‘ground’ and true earth ground occurs
in the amplifier, through its grounded power cord. Other equipment in the system should have some form of isolation to prevent ground
loops and associated hum.
CONNECTIONS