American Acoustic Development C Series-3G - Manual (Page 6)

Depending on the shape of your room (etc.), you may wish to place the rear speakers
behind you instead of on the side walls. In this case, you can use a pair of large floor
standing speakers matching your front speakers.
Connections
Note: Make sure your amplifier is off and disconnected from power while you are
connecting speakers to amplifier. Turn your amplifier on only after you check and
make sure speakers are properly connected.
Two Channel Stereo Application
Connections are made at the terminals located on the back of the loudspeaker system.
The terminals accept spade plugs, bare wire or banana plugs. For best results, use high
quality speaker cables.
All C Series-3G loudspeakers have 4 gold plated binding post for single or bi-wring
options.
Single Wiring
This method uses only one pair of cables to connect each speaker to the amplifier. (see
Fig. 1).
For each channel, the red terminal on the loudspeaker should be connected to the red
or (+) loudspeaker connection terminal on the receiver or amplifier. The black
terminal on the loudspeaker should be connected to the black or (-) loudspeaker
connection terminal on the receiver or amplifier. Connecting the loudspeakers in this
manner ensures that they will be in phase; that is work together rather than in
opposition. Connecting the loudspeakers out of phase will not damage them, but will
result in less bass and poor imaging.