5
RIGHT/LEFT INPUT (Balanced)
The audio inputs to the GFA-575se are through two high-quality, Balanced XLR jacks to
minimize high-frequency losses, noise, etc. They will accept standard XLR-type plugs, one
for each channel, LEFT and RIGHT. To insure that the performance designed into the
GFA-575se is preserved, you should use the highest quality plugs and cable as are feasible.
There are many cables specifically designed for this application. Your ADCOM dealer can
help select the best cable for your needs.
RIGHT/LEFT INPUT (Unbalanced)
The audio inputs to the GFA-575se are through two high-quality, gold-plated brass RCA
jacks using high quality insulation to minimize high-frequency losses, noise, etc. They will
accept standard RCA-type plugs, one for each channel, LEFT and RIGHT, usually supplied
at the ends of interconnecting cables. To insure that the performance designed into the
GFA-575se is preserved, you should use the highest quality plugs and cable as are feasible.
There are many cables which are designed specifically for these applications and your
ADCOM dealer can be of help in selecting the best cable for your application. Whatever
cable you finally select, it should have low capacitance. This is particularly important if you
use a long run between the preamplifier and the amplifier or if your preamplifier has a high
output impedance. Generally speaking, a cable with a capacitance of around
100pF
will
work well.
The load impedance which the GFA-575se inputs present to the source preamplifier is
22,000 ohms. This load impedance results in minimal amplifier noise and is more than
adequate for use with any associated source component regardless of its output impedance.
To preserve the correct stereophonic effects, please be certain to connect the left output of
the preamplifier to the RCA jack on the GFA-575se labeled LEFT INPUT and the right output
of the preamplifier section to the RCA jack labeled RIGHT INPUT.
RIGHT/LEFT STEREEO SPEAKER OUTPUTS
The GFA-575se's connections to the loudspeakers are made through 24K gold with plastic
5-way speaker terminals located on the rear panel. These terminals will accommodate either
bare wire, tinned wire, terminal pins, spade lugs. The output terminals are color-coded RED
and BLACK to indicate polarity. To insure correct stereo phasing, you must connect the RED
output terminal (labeled "+") to the loudspeaker input terminal color-coded RED (or labeled
POSITIVE, "+", POS,8OHMS or 4 OHMS). The BLACK binding post terminal on the
amplifier (labeled "-") should be connected to the BLACK loudspeaker terminal (or labeled
NEG, "-", C, COM, COMMON, G, or GROUND).
Summary of Contents for GFA-575se
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