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JBL 4312G Owner's Manual page 4

12-inch (300mm), 3-way studio monitor

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CONNECTIONS
CAUTION: Make sure that all of the system's electrical components are turned OFF (and preferably unplugged
from their AC outlets) before making any connections.
Speakers and amplifiers have corresponding positive and negative ("+" and "–")
connection terminals. The 4312G has color-coded connection terminals. The "+" terminal is
red, while the "–" terminal is black. See the illustration on the right.
The 4312G is designed so that a positive voltage at the "+" (red) terminal will cause the
speaker drivers to move outward (toward the room).
We recommend using a high-quality speaker cable with polarity coding. The side of the
cable with a ridge or other coding is usually considered positive polarity ("+").
To ensure proper polarity, connect each "+" terminal on the back of the amplifier or receiver
to the respective "+" (red) terminal on each speaker. Connect the "–" (black) terminals in
a similar way. See your receiver or amplifier's owner's manual to confirm its connection
procedures.
BASIC SINGLE-WIRE CONNECTION
Connect the amplifier to each speaker as shown in
the illustration on the right.
IMPORTANT: Do not reverse polarities (i.e., "+" to
"–" or "–" to "+") when making connections. Doing
so will cause poor stereo imaging and diminished
bass performance.
The 4312G's gold-plated speaker terminals can accept
a variety of wire connector types: bare wire, spade
connectors, pin connectors and banana connectors.
USING BARE WIRE OR PIN CONNECTORS:
IMPORTANT: Make sure that the (+) and (–)
wires or pins do not touch each other or the other terminal.
Touching wires can cause a short circuit that can damage
your receiver or amplifier.
USING SPADE CONNECTORS:
IMPORTANT: Make sure the (+) and (–) spade
connector blades do not touch each other or the other terminal.
Touching blades can cause a short circuit that can damage your
receiver or amplifier.
USING BANANA CONNECTORS:
4
Negative (–)
+ –
+ –
Receiver or Amplifier
(one channel shown)
A. Unscrew
B. Insert Bare Wire or
Cap
Pin Connector through
Hole in Post
A. Unscrew
B. Insert Spade
Cap
Connector Blades
around Post
A. Tighten
Cap
Positive (+)
Terminals
Terminals
Speaker
Connector Panel
C. Tighten Cap to
Secure
C. Tighten Cap
B. Insert Banana
Connector into Hole
in Cap

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