Adcom MOSFET GFA-5802 - Manual (Page 4)

WARNING
Whenever connections to or from the GFA-5802 are being made, be certain that the AC on/off switch of the ampiifier
is in the off position, the AC cord of the ampiifier is disconnected from the AC waii outiet and that aii associated
components are turned off.
RIGHT/LEFT UNBALANCED (RCA) iNPUTS O
The audio inputs to the GFA-5802 are through two high quality, gold plated RCA jacks to minimize high frequency line
losses, noise, etc. This input type is more common that the balanced XLR input (O) and is designed to work with an
unbalanced preamplifier. They will accept standard RCA type plugs, one for each channel, LEFT and RIGHT. The RIGHT input
IS generally represented by the color red, while LEFT is usually represented by either white or black.
To preserve the correct stereophonic effects, please be certain to connect the left output of the preamplifier or tuner-
preamplifier to the RCA jack on the GFA-5802 labeled LEFT INPUT and the right output of the source component to the RIGHT
INPUT jack
To ensure that the performance designed into the GFA-5802 is realized, you should use the highest quality cables
feasible. Whatever cable you finally select, it should have low capacitance Generally speaking, a cable with a capacitance of
less than 100 pF will work best.
BALANCED/UNBLANCED SWITCHES O
These switches should “point” towards the input that you are using. If the unbalanced RCA inputs are being used, then
the switches should be in the unbalanced position. If you are using the balanced XLR inputs, then the switches should be in the
ba/anced position. It is nof suggested to connect both the balanced input to a balanced source and the unbalanced input to an
unbalanced source at the same time.
RIGHT/LEFT BALANCED (XLR) INPUTS O
When you are using a preamp that has balanced outputs (via XLR jacks), it may be directly connected to the GFA-
5802 using “balanced XLR" cables. Pushing the release tab on the top of the input will release the XLR
NORMAL SPEAKER OUTPUTS O
The GFA-5802 is “polarity correct” and does not invert phase. That is, any positive going signal at its input will appear
as a positive going signal at its output.
The GFA-5802’s connection to the loudspeakers are made through two high quality, five-way, gold plated binding
posts located on the rear panel. These terminals will accommodate either bare wire, tinned wire, terminal pins, spade lugs or
banana plugs, either single or dual. These output terminals are color coded RED and BLACK to indicate polarity. To ensure
correct stereo phasing, you must connect the RED output terminal (labeled ‘V’) to the loudspeaker input terminal color coded
RED (or labeled POSITIVE, ‘V’, POS, 8 OHMS or 4 OHMS). The BLACK binding post terminal on the amplifier (labeled ”-”)
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