Conrad-Johnson ART 108A Benutzerhandbuch - Seite 5
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Installation
As is the case with any vacuum-tube power amplifier, the ART
108A Amplifier dissipates a significant amount of heat. Mount the
unit on an amp stand. The ART108A should be unobstructed on all
four sides and top to provide adequate ventilation.
All ART 108A Amplifiers sold in the United States are configured
for operation on a 60Hz ac power line producing between 108 and
126 volts. Export versions of the ART 108A Amplifier will
have
the correct
operating
voltage
and frequency clearly
marked on the back panel of the unit, near the ac power cord.
In all cases, the actual line voltage should be within + 5/- 10% of
the nominal rated voltage. The ART108A should be powered "OFF"
when not in use.
Electromagnetic Interference (EMI)
Considerable care has been taken in the design of the ART
108A Amplifier
to
minimize
its
susceptibility
to
radio
frequency interference and other forms of EMI. Choice of
materials, physical layout, grounding practice, and power supply
design have all been specified with a view to reducing the
impact of electromagnetic fields on the performance of this unit.
At the same time, however, our primary goal is the accurate
reproduction
of
recorded
music
in
the
normal
home
environment, and we have elected not to compromise this
objective by the application of heavy-handed RFI filters, or by
using grounding practices that reduce RFI at the expense of
degraded audio performance. We find that the approach we
have taken has worked extremely well, resulting in only rare
instances of EMI problems which could be treated locally as
needed, rather than compromising the performance of our
product in the 99.9% of installations where EMI is not a problem.
Care in installation can often avoid EMI induced problems. The
following
practices
should
generally
be
observed
in
any
application, and will be especially important where EMI may be a
problem.
Interconnect cables should be kept as short as possible (3 meters
or less), and shielded cable should be used.
Conrad-Johnson ART 108A Amplifier Owner's Manual
4