Naim Audio NAP 500 - Manual (Page 19)

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SUPERNAIT Integrated Amplifier
19 suPernaIT Introduction and Installation
The supernait 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 supernait. Diagrams illustrating the connection
of some of these are shown in section 20.
The following section 19 paragraphs describe installation features and functions specific
to the supernait. operational features common to all preamplifiers and integrated
amplifiers are described in section 28.
19.1 source Input selection and assignment
The input selection buttons arranged along the upper
bank select the source signal to be routed to the power
amplifier and the loudspeakers. The six buttons are labelled
cd , tuner , tape , av , aux1 and aux2 .
Each input button may be assigned to analogue inputs
(via DIN, RCA Phono or 3.5mm jack sockets), or to digital
inputs via RCA Phono coaxial, “Toslink” or “mini-toslink”
optical sockets. The default settings and the assignment
setup procedure are detailed in Sections 19.2 and 19.3
respectively.
19.1.1 analogue Inputs
The first four selection buttons (cd, tuner, tape and av) can
each be assigned to both a DIN input socket and a pair of
RCA Phono input sockets on the rear panel. The DIN and
Phono sockets for each input are internally wired in parallel
and should not be connected simultaneously.
The aux1 and aux2 selection buttons can each be
assigned to a pair of RCA Phono input sockets and a DIN
input socket on the rear panel respectively.
note: The aux2 DIN input socket carries a power supply
output voltage appropriate for a Naim phono preamplifier.
19.1.2 Digital Inputs
The Supernait additionally provides four S/PDIF digital input
sockets - 2 RCA Phono coaxial and 2 “Toslink” optical - on
the rear panel. Any input selection button can be assigned
to one of these sockets.
note: The digital inputs support stereo PCM audio only. If
the digital signal contains anything other than stereo PCM
audio (Dolby or DTS encoded programme material for
example) all outputs will be muted.
19.1.3 Front Panel Combined Input
An auxiliary front panel input socket is also provided. This
socket is a 3.5mm analogue “jack” input combined with
a digital “mini-Toslink” optical socket. The analogue input
is wired internally in parallel with the rear panel
aux1 input
and the two must not be connected simultaneously.
The front panel input (analogue or digital) is automatically
selected (and the
aux1 selection button automatically
assigned to it), whenever a plug is inserted in the socket.
note: The Supernait is able to differentiate a digital source
from an analogue one at the front panel input if the digital
source is working when the plug is inserted.
Input selection will revert to that previously selected when
the front panel input plug is removed.
19.2 Default Input selection Button and Input socket assignment
Input selection Input socket Input socket
Button assignment Type
cd Analogue Input 1 DIN/RCA Phono
tuner Analogue Input 2 DIN/RCA Phono
tape Digital Input 1 RCA Phono Coax
av Analogue Input 4 DIN/RCA Phono
aux1 Digital Input 2 “Toslink” Optical
(See Note)
aux2 Analogue Input 6 DIN (with Naim phono stage power supply)
note : Any plug inserted into the front panel socket will automatically provoke selection of
this input (digital or analogue) and will automatically assign it to the aux1 selection button.
operational features
common to all
preamplifiers and
integrated amplifiers
are described in
section 28