moon 400M Neo Series, Руководство пользователя

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Owner’s Manual
9
Connecting the 400M
Prior to making any connections or removing the XLR
jumpers, the power amplifier must be turned off and
the AC cable disconnected for at least 1 minute.
1.
Connect the input cables running from your
preamplifier’s outputs, whether balanced or single-
ended, to the amplifier’ s XLR or RCA input,
respectively. We highly recommend that you use
the balanced XLR input (provided that your
preamplifier has balanced outputs) to take full
advantage of
Nēo 400M Mono Power Amplifier’s
capabilities. Please refer to the next section,
“Balanced Operation” on for further information.
Do not connect cables to both the XLR and RCA
inputs at the same time. Damage to both the 400M
and the connected equipment can result that is not
covered by warranty.
.
Don’t hesitate to use high quality interconnect
cables * . Poor quality interconnect cables can
degrade the overall sonic performance of your
system. It is recommended, though not mandatory,
to use balanced interconnects between your
preamplifier and the
400M when using long cable
runs (i.e. more than 3 meters in length).
2.
Connect your speaker, with the cable of your
choice, to the
400M ’s speaker binding posts. Take
care to respect the polarity (“+” , “-” ) of the outputs.
Once again, don’t hesitate to use high quality
speaker cables
* . Poor quality speaker cables can
degrade the overall sonic performance of your
system.
3.
Connect the supplied AC power cable to the IEC
receptacle, located on the amplifier’s rear panel.
Ensure that the AC wall outlet you use has a
functioning ground. For the best sonic
performance, it is preferable that you plug your
400M directly into a dedicated AC outlet and avoid
using an extension cord. If you have the time and
willingness, consider installing a superior quality AC
wall outlet such as a hospital grade Hubbell
* .
* Please speak with your MOON Authorized Retailer about
the benefits of high quality cables for your system, and
superior quality AC wall outlet..
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
Nēo 400M , 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.