Simaudio MOON 330A, Руководство пользователя

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MOON by Simaudio
Connecting the Unit
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 inputs, respectively. We highly
recommend that you use the balanced XLR
inputs (provided that your preamplifier has
balanced outputs) to take full advantage of
MOON 330A 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 330A 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 330A when
using long cable runs (i.e. more than 3 meters in
length).
2. Connect your speakers, with the cables of
your choice, to the 330A’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 330A 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 MOON 330A, 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.