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11 system automation, 12 external control and update sockets, 13 signal ground switch – Naim Audio NDX User Manual

Page 7: Installation and connection

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5

Installation and Connection

wireless antenna socket. Wireless configuration will also
be necessary before NDX/5XS is able to connect to your
home network. See Section 4.5.1.

2.10.3 Network Settings

The NDX/5XS is set up when originally shipped not to
require any on-site TCP/IP configuration but to connect
to a network automatically (it uses DHCP by default).
However, if your NDX/5XS has been previously used, its
network configuration may have been altered leaving
it unable to connect automatically. If this appears to be
the case ensure that DHCP is selected in the Network
Settings menu (see Section 4.5 of this manual) and re-start
NDX/5XS. If problems still persist contact your retailer,
installer or Naim Audio directly.

Note:

Before reporting network connection problems carry

out a Factory Reset operation. Select Reset All Settings
from the Factory Settings setup menu. See Section 4.10.

Note:

A NDX/5XS switched on without a working wired

network connection will only be able to connect to
a home network wirelessly. To use an Ethernet (wired)
connection, switch the NDX/5XS off, connect the network
and switch it on again.

Note:

For internet radio to operate, the NDX/5XS requires

connection to a broadband internet service.

2.11 System Automation

NDX/5XS control can be linked using

System Automation

to the control of some Naim preamplifiers, CD players and
the Naim DAC. System Automation enables for example,
preamplifier inputs to be selected via the NDX/5XS, or for
n-Stream transport functions to control a CD player. To take
advantage of System Automation, connect one of the
NDX/5XS rear panel

Remote Out

sockets to a preamplifier,

CD player or DAC

Remote In

socket. Use a cable

terminated with a 3.5mm jack plug at one end and a
3.5mm jack or phono plug as necessary at the other end.

Using both NDX/5XS Remote Out sockets, for example, one
connected to a preamplifier and one connected to a CD
player enables comprehensive system control via just one
user interface (handset or n-stream iPhone app).

Note:

Stereo and mono 3.5mm jack to 3.5mm jack can

be used for System Automation. If a stereo 3.5mm jack to
phono plug cable is used, connect the left channel phono
plug.

Note:

NDX/5XS System Automation is switched off by

default. A full description of its configuration and use can
be found in Section 4.9.

2.12 External Control and Update Sockets

The NDX and ND5 XS are fitted with a 3.5mm jack

Remote

In

socket on their rear panels. The Remote In socket

can be used for RC5 remote control via a fully wired
connection or a remote IR repeater.

The NDX and ND5 XS are also fitted with a rear panel

mini-

USB

socket. This socket enables firmware upgrades and

diagnostic tests to be carried out. Contact your retailer for
more information if required.

Note:

The rear panel mini-USB socket is not intended for the

connection of USB storage hardware and cannot be used
for audio playback.

2.13 Signal Ground Switch

The NDX/5XS is fitted on its rear panel with a

Signal Ground

switch offering two positions:

Chassis

and

Floating

. Select

the

Chassis

position unless NDX/5XS is connected in a hi-fi

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.

Note:

All Naim CD players are earthed so the Signal

Ground switch should be set to floating if one is connected
in the system (unless a digital signal connection is used).

Note:

The Signal Ground switch setting is not affected by

the use of an external power supply.

No damage will be done if the wrong Signal Ground
position is chosen, however the system sound quality may
be compromised.

2.13.1 General Audio Connection Notes

The NDX/5XS mains earth (ground) should always be
connected regardless of what other equipment is used.

Note:

If an external power supply is used the NDX/5XS

mains earth is connected through the Burndy connection
cable to the power supply mains earth.

A mains earth grounds the chassis 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.

This manual is related to the following products: