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740P Evolution
Series
18
Figure 5: Remote Operation with 12V Trigger
In figure 5 we have a
740P
Preamplifier and
860A
amplifier connected together via their respective 12V triggers;
The 12V trigger output on the
740P
is connected to the 12V trigger input on the
860A
(using a 1/8” mini-jack
cable). When you turn on the
740P
via remote control (or its Standby button), the
860A
will turn on automatically.
The same rule applies when you put the
740P
into Standby mode.
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 integrated
amplifier, then 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 +10 Volts,
the other will be carrying a signal of –10 Volts. When
these two inverted signals on a balanced line are output
from the
MOON 740P
, 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 cancel out.