Naim Audio NAC-N 172 XS - Manual (Page 24)

E22
NAIT XS Integrated Amplifier
22 NAIT XS Introduction, Installation and Connections
The NAIT XS should be installed on a dedicated equipment stand intended for the
purpose. Do not stand it directly on top of another item of equipment. Care should
be taken to ensure that it is level. The amplifier should be installed in its final location
before connecting cables or switching on. Ensure that the volume is turned down before
switching on.
A variety of power supply upgrade, alternative preamplifier and alternative or additional
power amplifier options are possible for the NAIT XS. Diagrams illustrating the connection
of some of these are shown in Section 23. Contact your local retailer or distributor for
advice on further alternative connection schemes.
The NAIT XS incorporates an AV Bypass switch on its rear panel. The switch should only
be set to “On” if the amplifier is to be used in conjunction with an AV processor in a
home theatre system. In all other installations the AV Bypass switch should be set to “Off”.
Speaker and/or amplifier damage may occur if a signal is inadvertently connected to the
NAIT XS av input while the AV Bypass switch is “On”.
Operational features common to all preamplifiers and integrated amplifiers are described
in Section 28.
22.1 Mains Power Connection
Connect the NAIT XS to a mains power socket using either
the mains cable supplied or a Naim Power-Line.
22.2 Signal Inputs
The NAIT XS front panel input buttons select the source input
signal to be routed to the integral power amplifier and the
loudspeakers. The six buttons are labelled
cd , tuner , hdd , av ,
aux 1 and aux 2 .
The cd , tuner , hdd and av input buttons select parallel DIN
and RCA phono input sockets on the rear panel.
Note: The hdd and av sockets carry both inputs and outputs.
See Section 22.4 for more information.
The aux 1 input button corresponds to a pair of RCA phono
sockets on the rear panel and a parallel 3.5mm stereo jack
socket on the front panel. Insertion of a plug into the front
panel
aux 1 socket will automatically switch the amplifier
to that input. Removal of the plug will return the amplifier to
the previously selected input. If a different input is selected
while a plug is inserted removal of the plug will not cause
the input to change.
The aux 2 input button corresponds to a DIN input socket
on the rear panel. The aux 2 DIN socket also carries a
power supply output suitable to power a Naim Stageline or
SuperLine phono preamplifier.
Note: For optimum sound quality DIN sockets should be used
in preference to RCA phono sockets.
Note: Where an input has DIN or Phono socket options only
one should be connected at any one time.
Always use high quality interconnect cables to connect
sources to inputs. The Naim Hi-Line will produce the best
results.
22.3 Speaker Outputs
A set of stereo speaker connection sockets is provided on
the rear panel. Custom Naim loudspeaker connectors are
supplied to make the connection and in order to comply
with current European safety regulations these should always
be used. Naim speaker cable will provide the best results,
however, a wide range of speaker cable types can be used
without risk of damage to the amplifier.
Ensure when connecting speakers that they are “in phase”.
That is, the positive and negative connection orientation
at both the speaker and amplifier ends of the cable is the
same for both channels.
22.4 AV and hdd Inputs and Outputs
The NAIT XS av and hdd inputs have associated outputs that
enable the selected input signal to be routed externally; to
an audio recording component for example.
Note: The av or hdd outputs will be muted if their
corresponding inputs are selected.
22.5 AV Bypass
The NAIT XS can be integrated within a multi-channel home
theatre system, driving the front left and right channel
speakers, by engaging its AV Bypass mode. AV Bypass mode
enables a home theatre processor to take over volume
control of signals connected to the NAIT XS
av input. It is
engaged using the switch on the rear panel. The NAIT XS
volume control indicator will extinguish when AV Bypass
mode is engaged and the av input is selected. The remote
handset volume control will also be disabled.
Note: The AV Bypass feature must be used with care. It
bypasses the NAIT XS volume control leaving any signal
connected to the av input to be passed to the speakers at
full volume.
Note: The mute function is disabled when AV Bypass is
engaged.
Operational features
common to all
preamplifiers and
integrated amplifiers
are described in
Section 28