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MOON W-6 Mono Power Amplifier
Balanced Operation
When using an unbalanced interconnect, the audio signal runs through both the center wire and the
shield/ground wire. Any noise picked up by this interconnect (ie. nearby magnetic fields such as an AC
power cord) will be reproduced by the amplifier and heard through the loudspeakers. Conversely, a
balanced interconnect has three separate conductors; one for the ground and two for the actual signal.
These two signals are identical except that one is 180 degrees out of phase with the other. For
example, when one conductor is carrying a signal of +5 Volts, the other will be carrying a signal of –5
Volts. When these two inverted signals on a balanced line are input into a differential power amplifier
such as the MOON W-6 Mono power amplifier, any noise picked up by the interconnect will be
eliminated since a differential circuit amplifies only the difference between these two signals: Noise on
a balanced interconnect will be equal on both conductors and therefore not be processed.
You can operate the MOON W-6 Mono power amplifier in balanced mode one of two ways:
1) When using a balanced interconnect cable with an XLR connector, You must remove the
“dummy” RCA terminator plug from the back panel and store it in a safe place.
2) You can also use both of the RCA “+” and “-” inputs for balanced operation.
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Balanced Operation 9