NAIM NAP 350 User Manual page 10

4.2 Input Connection Details
The NAP 350 features industry standard XLR balanced inputs for audio. Balanced
connections are a low-noise solution and are able to run over long distances – enabling
more flexible placement of the NAP 350.
Ground
Positive/
Hot
Negative/Cold
Adapter cables are available to allow you to connect the NAP 350 to preamplifiers with
RCA or DIN outputs.
4.3 Loudspeaker Cable and Connectors
For optimum performance, use Naim NAC A5 or Super Lumina speaker cable, connected
in the correct direction (for example, NAC A5 printed arrows pointing toward the
loudspeaker).
It is important your pair of speaker cables are both the same length, up to a recommended
maximum of 20m. Unlike some earlier Naim designs, we do not mandate a minimum
speaker cable length, but would still suggest you avoid sub-2m lengths.
Your NAP 350 comes with custom Naim Audio loudspeaker connectors – these provide the
best, impedance-matched electrical connection, and ensure your amplifier complies with
current safety regulations.
Ensure when connecting speakers that they are 'in phase' – meaning the amplifier's
positive loudspeaker output is connected to the positive loudspeaker input – and that the
left and right amplifiers go to the correct speaker.
4.4 System Automation
When using the NAP 350 with a compatible preamplifier – such as the NAC 332 – you can
synchronise power on/off and logo brightness across your system by connecting them
with the supplied Optical System Automation Cables. Simply plug the cables from the
'Remote Out' terminals of the preamplifier to the 'Remote In' terminals on the NAP 350
amplifiers. It is possible to link further power amplifiers using the 'Remote Out' terminals
of the NAP 350.
If you require a longer distance between your preamplifier and the NAP 350 than the
supplied cable allows for, you can use a replacement 3.5mm to 3.5mm optical cable
to the required length. It is also possible to use standard analogue cables with 3.5mm
connectors, but an optical cable offers the best performance.
4.5 Powering Up/Down
Once all your input and output connections are made, connect the supplied mains leads to
your NAP 350 amplifiers and to mains power. Please note: your source - such as a streamer
or CD player – and any associated external power supplies should be switched on before
you switch on your NAP 350 amplifiers.
You can now power up the NAP 350 amplifiers either by turning on your Naim preamplifier
– connected via System Automation – or by simply pressing the power button on the front
panel of the power amplifiers.
It is the same procedure to switch off your NAP 350 amplifiers: turn off your Naim
preamplifier – connected via System Automation – or simply press the power button on
the front panel of the power amplifiers, which will put them into standby. Avoid using a
mains outlet switch to turn your amplifiers off.
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