Bedienungsanleitung Naim NAC-N 272 (Seite 7 von 32) (Englisch)

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2. Installing and Connecting

2.3 Headphone Output

The NAC-N 172 XS and NAC-N 272 are equipped on their

front panels with 3.5mm and 6.3mm stereo headphone

sockets respectively. Insertion of a headphone plug will

mute the preamplier outputs. Removal of the plug will

restore the outputs.

Note: NAC-N preampliers control and store volume

settings separately for headphones and speakers.

2.4 DAB/FM Aerial Connection

The NAC-N preamplier DAB/FM tuner module requires a

strong, interference-free signal to enable high quality DAB

and FM reproduction. The rear panel DAB/FM Aerial socket

should be connected, via 75 ohm low-loss coaxial cable, to a

suitable aerial. The aerial should be mounted clear of large

obstructions and as high as possible; ideally on a roof.

Note: Your local Naim retailer should be able to oer

advice on a suitable aerial and aerial installer.

2.5 Signal Ground Switch

Your NAC-N preamplier is tted on its rear panel with a

Signal Ground switch oering two positions: Chassis and

Floating. Select the Chassis position unless the NAC-N

preamplier is connected in a hi- system incorporating

another earthed source component, or mains “hum” is

audible through the loudspeakers. Contact your retailer,

distributor or Naim for advice if necessary.

Note: “Connected” in the context above means an

analogue audio signal cable that includes an earth

connection. The digital inputs are isolated from the mains

earth regardless of the Signal Ground switch.

Note: All Naim CD players are earthed so the Signal

Ground switch should be set to oating if one is

connected in the system.

No damage will be done if the wrong Signal Ground position

is chosen, however the system sound quality may be

compromised.

Note: NAC-N preamplier analogue input and output

negative connections for each channel are common.

The mains earth (ground) should always be connected

regardless of what other equipment is used. The mains

earth primarily grounds the case and the electrostatic

screen within the transformer, and is only connected to

the signal negative if the Signal Ground switch is set to

Chassis. In order to avoid hum loops, the signal negative

of the whole system should be connected to the mains

earth in one place only.

2.6 USB Interface

NAC-N preampliers are tted with a front panel USB

interface intended for the connection of USB memory sticks

carrying audio les. The USB interface should not be used

for any other purpose.

Note: Most UMS (Universal Mass Storage) USB memory

sticks are compatible with the NAC-N preamplier USB

audio interfaces. Other UMS devices might include

portable digital music players, smart-phones, tablet

computers and memory card readers. Non-UMS USB

devices, such as older MP3 players, may be connected

to a NAC-N preamplier analogue audio input from their

headphone sockets. See Section 7 for more information.

2.7 Network Connections

2.7.1 Wired Network Connection

NAC-N preampliers are tted on their rear panels with a

standard RJ45 Ethernet socket. This socket enables them to

join home networks via a network router to access internet

radio streams, to play audio les stored on UPnP™ servers,

to play Spotify

Connect and TIDAL streams, and to play

from or broadcast to other Naim streamers on the same

network.

Note: Ethernet-over-mains hardware may be used and

provides a simple and convenient method of wired home

network connection. However, depending on mains wiring

factors specic to each home environment, the presence

of network data on the mains supply may compromise

overall system sound quality. If any sound quality

compromise is found to be unacceptable, dedicated

network cabling should be installed as the preferred

option, or alternatively wireless networking can be

employed.

2.7.2 Wireless Network Connection

If your NAC-N preamplier is to connect wirelessly to the

home network, the supplied Wi-Fi aerial must be tted to

the rear panel Wi-Fi aerial socket. Wireless conguration

will also be necessary before network connection can be

made. See Section 4.7.1.

Note: The Wi-Fi aerial is the longer one.

Note: An optional high-gain Wi-Fi antenna, the WA5,

is available. The WA5 may improve Wi-Fi connection

reliability in some installations. Contact your Naim retailer

for more information.

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