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VT80 is turned on before other components,
the amplifier will amplify any extraneous
turn-on noises those components might
generate, which could potentially damage
the loudspeakers. Good operating practice
dictates that the amplifier should be turned
on last, and turned off first in an audio
system.
The VT80 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 VT80
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 12-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.
Connections
Connect the VT80 input to the preamplifier
or electronic crossover, using only the
highest grade of audio interconnect cables.
To avoid sonic degradation use the shortest
practical length of cables.
Note:
The VT80 will not be damaged
by improper impedance match to the
speakers, but maximum power delivered
into the speakers may be affected.
A.C. Power Connection
It is important that the VT80 be connected
via its supplied 20 amp IEC 12-gauge power
cord to a secure, dedicated A.C. power
receptacle. Never connect to convenience
power receptacles on other equipment. Only
use the power switch on the front of the VT80
for On/Off control of the amplifier, or the
12V start-up trigger for remote installations.
The AC power source for the VT80 amplifier
should be capable of supplying 10 amperes
for 100 or 120 volt units, or 5 amperes for 220
or 240 volt units.
For the very best performance on 100 or 120
volt circuits, the VT80 should be connected
to its own AC power circuit branch, protected
by a 15 amp breaker. The preamplifier and
other audio equipment should be connected
to a different power circuit and breaker.
The VT80 should be turned on after the
other components of your system. If the