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Installation - Getting Started
2 Getting Started
The HDX should be installed horizontally on a dedicated equipment stand intended for the
purpose. Do not stand the HDX directly on top of another item of equipment. Ensure that
the fan aperture on the rear panel is not obstructed. The HDX should be installed in its final
location before connecting cables or switching on. Remember to install batteries in the
remote handset.
The HDX can be connected to a computer network to retrieve album data and artwork
from the internet, to stream music around the home using NaimNet hardware, or to take
advantage of one of its alternative user interfaces. If the HDX is to be used in a network it
is important that the network is working when the HDX is connected and switched on.
Locally connected audio amplifiers should not be switched on before the HDX is switched
on. The HDX power switch is located on the rear panel with a shutdown button located on
the front panel. The front panel shutdown button extinguishes when the HDX wakes from
shutdown.
To begin installation first identify the rear panel network, audio output and mains input
sockets, and connect the appropriate cables.
2.1 Internet/Network Connections
While the HDX can be used in “stand-alone” mode without
any network connection, if its full capabilities are to be
realised it requires connection to an “always on” internet
service via an ethernet router/modem with a built-in
firewall.
If the HDX is to be used in a NaimNet/StreamNet network
audio system, the network connection also enables the
HDX to communicate with other network devices and
provides access to its alternative user interfaces.
The HDX is set up when originally shipped not to require
any further network configuration but to connect to
a network automatically (it uses DHCP by default).
However, if your HDX has been previously used, its network
configuration may have been altered leaving it unable to
connect automatically. Contact your retailer, installer or
Naim Audio directly if this appears to be the case.
Note: An HDX used in stand-alone mode and switched
on without a working network connection will revert to
an internal IP address only suitable for stand-alone use.
To restore the default DHCP setup, switch the HDX off,
connect the network and switch it on again.
2.1.1 Network Hardware
Wired network connection is strongly recommended for
the most consistent and secure HDX operation.
Ethernet-over-mains hardware may be used and provides
a simple and convenient method of home network
connection. However, depending on mains wiring factors
specific 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.
2.2 Power Supply Upgrade
The HDX can be upgraded through the use of an external
Naim XPS or CD555PS external power supply to power its
analogue circuits.
If an external power supply is to be used, the link plug in
the rear panel of the HDX should be removed and the
power supply connected in its place using an SXPS Burndy
cable. See Diagram 3.3.
THE SXPS BURNDY CABLE ONLY MUST BE USED TO CONNECT
THE XPS OR 555PS POWER SUPPLIES.
Both the HDX and the external power supply must be
switched off when the link plug is removed and the Burndy
connections are made. Switch on the external power
supply first followed by the HDX.
2.3 Audio Connections
Connect one or all of the analogue DIN (output 1) or
Phono (output 2) output sockets, or the Digital output
socket, to an appropriate audio system input. If using the
analogue outputs use a Naim Hi-Line interconnect cable
for best results.
Note: The output selector on the rear panel should be
switched to reflect the analogue output connections used.
2.3.1 Signal Ground
Switch the HDX’s rear panel Signal Ground switch (see
paragraph 3.2.14) to the Chassis position unless the HDX 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: All Naim CD players are earthed so the Signal
ground switch should be set to floating if one is connected
in the system.
Note: “Connected” in this context means an analogue
audio signal cable that includes an earth connection.
6


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