Niles Audio OS6.3Si - Manual (Page 18)

CHECKING LOUDSPEAKER PHASE
Loudspeaker wire has two conductors. On both your receiver (or amplifier) and each set of
loudspeaker binding posts, one conductor is attached to the negative (–) terminals, while the other
is attached to the positive (+) terminals. Usually, the wire is marked for your convenience, but the
marking can be done in the following different ways:
• Stripe on one wire
• Ribbed area you can feel on one conductor
• Different colors of metal wire on each conductor
• Fabric strand or string wound into one of the conductors
Of course, there are some wires that appear completely identical. So be careful, or you might make
a connection mistake. If you do, the woofer on the OS loudspeaker will not sound as loud or will
lack bass. If you suspect the sound is not right, or you cannot see any markings on the wire, try
this simple test:
1. Play some music with the receiver or amplifier set to Mono.
2. Listen to the richness of the bass and the loudness of the sound.
3. Turn off the receiver or amplifier and reverse the connections on one loudspeaker
terminal only.
4. Repeat the listening test with the same setting of the volume control:
• If the music is louder now, use the new connections.
• If the music is softer now, revert to the original connections.
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