The XL-600 is normally wired for use on 120 Volt 60 Hz
power lines. If your line (mains) voltage is different, you
will require the optional export multi-voltage transformer,
which accommodates voltages from 100 to 240 VAC, at
50-60 Hz.
The XL-6003 power switch may be left ON, and the
amplifier switched remotely via a preamplifier or other
control center, provided that device has a switched AC
outlet capable of supplying 20 amperes for the amplifier,
in addition to the requirements of other units being
switched. Alternately, you may connectthe amplifier direct-
ly to a wall outlet, and use the front panel power switch
provided on the amplifier.
As a general rule, power amplifiers should be turned ON
LAST, and turned OFF FIRST, before other equipment, to
avoid switching transients that may be generated by prior
stages
Hafler
OH-100, OH-110, IRIS and SE-100
preamplifiers employ protective muting circuitry which ob-
viate this concern.
Input Connections
Conventional shielded RCA
type cables should be used
to connect the amplifier’s gold input jacks to the
preamplifier’s output, Gold connectors provide added as-
surance against signal degradation due to contact cor-
rosion. Regardless of cable or connector material, verify
that the contacts are clean, and that the plug’s outer shield
is tight on the jack, to avoid hum.
If you wish to install the XL-600 at some distance from the
preamp, the preamp’s output impedance and cable
capacitance determine the maximum cable length to avoid
high frequency losses.
If, as with Hafler preamps, the
output impedance is 600 ohms or less, and the cable
capacitance is 50 picofarads (pF) or less per foot, then up
to 50 feet of cable may be used. On long runs, keep the
left and right cables close together, and avoid running them
parallel to AC power wiring to minimize hum pick up.
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