NAIM NAP 350, Руководство пользователя, Страница: 11 / 160

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4.6 Standby Power Settings
By default, the NAP 350 is set to ‘Auto Standby’ - it automatically enters Standby mode
(where it consumes less than 0.5W of power) after 19 minutes of inactivity. Music Sensing
will wake the amp from Standby when it detects an input signal.
For the optimum sound quality, switch the Standby setting on the rear panel to ‘Instant on’,
which keeps all sensitive audio circuits permanently powered up.
Please note Music Sensing is disabled when it receives a system automation command; if
the NAP 350 is manually put into Standby via the Standby button, or when ‘Instant On’ is
enabled.
4.7 Naim Logo Brightness Settings
You can choose the brightness level of the Naim logo on your NAP 350. If you are using a
Naim preamplifier connected via System Automation, you can synchronise the brightness
of all the logos from the preamp. Alternatively, you can set the NAP 350 via the brightness
toggle switch on the rear panel.
PLEASE NOTE: the brightness button also functions as a full NAP 350 reset button when
it is pressed for 3 seconds, so it is best to make your logo brightness choices quick and
decisive!
4.8 USB Update
Your NAP 350 has a micro USB terminal, but this is for service use only.
5. Mains power, Earthing and More
Use only the main leads and plugs supplied with your NAP 350, or the upgrade Naim
Power-Line mains cable. Where fused plugs are used, 13 amp fuses should be fitted. Do
not wire voltage dependent resistors or noise suppressors into mains plugs; they degrade
the mains supply and the sound.
5.1 Earthing
In order to avoid hum loops, the signal ground of the whole system should be connected to
the mains earth in one place. Typically, this is at the primary source. For example, a Naim
streamer has a ground lift switch. Set this to “default” if no other source connects mains
earth to signal ground. This setting will give best sound quality.
5.2 Non-rewirable Mains Plugs
If a non-rewirable plug is cut from a mains lead (for whatever purpose) the plug MUST be
disposed of in a way to render it totally useless. Considerable shock hazard exists if the
cut-off plug is inserted into a mains outlet.
5.3 Mains Circuits and Interference
A hi-fi system usually shares a mains power circuit with other household equipment,
some of which can cause distortion that may manifest as mechanical hum from mains
transformers, including the large transformer in your NAP 350.
Transformer hum is not transmitted through the speakers and has no effect on the
performance of the system; however, careful positioning of your Naim system may
reduce it, as may a separate, dedicated mains circuit. Such a circuit (ideally with a 30 or
45 Amp rating) will also generally improve system performance. Only seek advice on the
installation of a separate mains circuit from a qualified electrician.
5.4 Lightning Precautions
Your Naim system should be turned off and fully disconnected from mains power when
there is a risk of a lightning strike, to protect from potential damage.