CONNECTIONS
Rear Panel
AUDIO signal connection jacks
Use these jacks to connect the audio signal cords from
your components to the amplifier. The audio signal cords
should be connected to the proper input output jacks for
each unit. Note: the tuner can be hooked into the tape or
the CD into the Auxiliary; however, this will defeat the
purpose of the selector switch. Be sure to observe the
proper polarity, i.e. the right channels of the amplifier are
connected to the corresponding right channels of the
component, etc.
Tuner = Connect a tuner
Tape = Connect a tape deck for playback
Aux = Connect an audio signal of a CDV player,
monitor TV or VCR
CD = Connect a compact disc player
and SPEAKER terminals
Your amplifier has two output channels, the Right Output
and the Left Output. Each output channel is designed to
handle at least one speaker. Simply connect the
"negative" or "-" speaker lead to "GND" post and the
"positive" or "+" speaker lead to 4 or 8 ohm post, as
required (check the impedance of your speakers and
connect them to the correct ohm post). Make sure that
the polarity of the speaker wire is correct, that is the
black, "-", or negative speaker terminal, is wired to the
"GND" terminal on the JD 502B and the red, "+", or
positive speaker terminal is wired to the "4"or "8" ohms
terminal on the JD 502B. If these wires are reversed
(reversed polarity), the sound will be unnatural and will
lack bass (out of phase). Another factor that should be
considered is the rated power handling capacity of your
speaker. We recommend
using a speaker that is rated to exceed 100 watts.
Wattage lower than this can result in damage to the
speaker or distorted sound.
Grounding Post
Can be utilized as a grounding source for other pieces of
electronic equipment.
AC power connection and fuse holder
Always place the power on-off switch on the panel of the
JD 502B in the "Off" position before connecting the
power line cord to AC power. The JD 502B amplifier
must be connected to a wall AC power receptacle, or a
similar heavy-duty source. Avoid the use of extension
cords. If they must be used on a temporary basis, use
14-gauge or heavier cords. The power cord on your JD
502B has a standard three-prong grounding plug to
provide maximum safety when it is connected to a
ground wall receptacle. If there is any question regarding
the safety of grounding procedures, be certain to seek
competent help with the installation. In the upper half of
the IEC is the fuse holder with an extra fuse. When
replacing the fuse, make sure that your JD 502B unit is
unplugged from the wall. To replace the fuse, pry the
cover off and use for 110 - 120 VAC (Household AC
TUNER TAPE CD AUX
AC INPUT
GRD
LEFT OUTPUT
8
4 0
4
80
RIGHT OUTPUT
1
L
R
INPUT
3
2
4 5
RISK OF ELECTRICAL
SHOCK
O
CAUTION
INPUT
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