Naim Audio NAC-N 172 XS - Manual (Page 20)

E18
SUPERNAIT Integrated Amplifier
19.3 Digital Input Assignment
The default digital input socket assignment illustrated in
Table 19.2 may be changed if desired. Each selection
button may be assigned to any one of the four rear panel
digital input sockets.
Input assignment setup is accessed through the Supernait
program mode . To switch into (or exit from) program mode
press and hold the prog key on the remote handset (in
preamplifier mode). Program mode is indicated by a
flashing indicator on the front panel volume control.
Note: If no function is operated within five minutes of
entering program mode the Supernait will return to normal
mode automatically.
Once in program mode, to assign a digital input socket, first
press the required
input selection button. Then, press one
of the record selection buttons to assign the desired digital
input. The record selection buttons assign digital inputs as set
out in the following table:
Record Select Button Digital Input Selection
cd (assigns) digital 1 (coaxial)
tuner (assigns) digital 2 (optical)
tape (assigns) digital 3 (coaxial)
av (assigns) digital 4 (optical)
As an example, to assign the tuner input selection button to
digital input 4 proceed as follows.
i) Enter program mode.
ii) Press the
tuner input selection button.
iii) Press the av record selection button (which will illuminate).
iv) Exit program mode.
To return an input selection button to its default analogue
input, repeat the assignment procedure.
For example, to return the tuner input selection button to its
analogue input socket.
i) Enter program mode.
ii) Press the
tuner input selection button.
iii) Press the av (illuminated) record selection button (which
will extinguish).
iv) Exit program mode.
19.4 Record Outputs
The selection buttons arranged along the lower bank select
the source signal to be routed to the Supernait’s record
outputs.
These separate source and record sections enable one
source (a CD player, for example) to be listened to whilst
the output from another (say, the tuner) is simultaneously
selected for recording.
Note: Simultaneous and independent listen and record is not
possible with two digital sources.
19.5 Speaker Outputs
A stereo set of speaker connection sockets is provided on
the rear panel. Custom Naim Audio loudspeaker connectors
are supplied to make the connection and in order to
comply with current European safety regulations these
should always be used. Naim Audio 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.
19.6 Headphone Output
A 3.5mm headphone socket is provided on the front panel.
Insertion of a headphone plug will automatically switch on
the headphone amplifier and mute the speaker outputs
unless the Supernait is set up not to mute.
To prevent (or re-enable) automatic speaker muting, enter
program mode and press the
record aux2 selection button.
19.7 Auxiliary Inputs and Outputs
A bi-amp out (preamplifier output) DIN socket is provided
on the rear panel to enable an external upgrade power
amplifier or second (bi-amp) power amplifier to be used.
Note: Bi-amp out is the preferred socket for all external
power amplifier connections.
Also provided are separate pre-amp out and power-amp
in sockets. In normal use these sockets are connected by
an external link plug. The link plug should be removed only
if a power supply upgrade is to be used or an alternative
preamplifier is to use the Supernait power amplifier section.
Diagrams 20.3 to 20.5 illustrate use of these sockets.
When an external preamplifier is connected to the Supernait
power-amp in socket, a fault will initially be indicated by the
source mute button flashing. To clear the fault, press and
hold the flashing source mute button. This will un-mute the
power amplifier and turn off the display and volume and
balance indicators.
The Supernait provides an unfiltered analogue stereo
subwoofer output via a pair of RCA Phono sockets.
Note: The subwoofer output is a duplicate of the
preamplifier output. No low-pass filtering is applied.
19.8 Power Supply Upgrades
The Supernait preamplifier section can be upgraded
through the connection of an external Flatcap, Hi-Cap or
Supercap power supply. Diagrams illustrating power supply
upgrades are shown in the following section. The Supernait
and external power supply must be switched off when
connections are made. Switch on the external power supply
and then the Supernait when all connections are complete.