Naim Audio StageLine - Manual (Page 3)

1
Naim Audio products are conceived with
performance as the top priority. Careful
installation will help ensure that their full
potential is achieved. This manual covers the
NAPSC power supply, the Headline headphone
amplifier and the Stageline phono amplifier.
It begins with general installation notes and
statutory safety warnings. Product specific
information begins in Section 5.
1 Connections
It is important for both safety and performance
that any standard cables supplied are not
modified.
1.1 Analogue Audio Interconnect
Cables
If options are available with your equipment
and installation, DIN interconnect sockets
should be used in preference to Phono sockets.
One end of each Naim audio interconnect
cable is marked with a band to establish its
correct orientation. The band denotes the
end that connects to the signal source. Naim
Hi-Line interconnect cables will provide the
best results.
Audio interconnect plugs and sockets should
be kept clean and free from corrosion. The
easiest way to clean them is to switch off the
equipment, pull the plugs out of their sockets,
and push them back in again. Contact cleaners
and “enhancers” should not be used as the film
they deposit may degrade the sound.
2 Mains Power
Where fused plugs are used 13 amp fuses
should be fitted. Fuses of a lower rating will
fail after a period of use. Do not wire voltage
dependent resistors or noise suppressors into
mains plugs. They degrade the mains supply
and the sound.
2.1 Mains Plug Wiring
In some territories a mains plug may need to
be fitted to the supplied mains lead. As the
colours of the wires in the mains lead may
not correspond with the coloured markings
identifying the terminals in the plug proceed
as follows:
The wire coloured
GREEN and YELLOW must
be connected to the terminal in the plug
marked by the letter
E or by the safety earth
symbol or coloured GREEN or GREEN and
YELLOW .
The wire coloured BLUE must be connected to
the terminal in the plug marked with the letter
N or coloured BLACK .
The wire coloured BROWN must be connected
to the terminal in the plug marked with the
letter
L or coloured RED .
2.2 Equipment Fuses
Mains powered Naim Audio equipment is
fitted with a mains fuse on the rear panel
adjacent to the mains input socket. Replace it
if necessary only with the spare fuse supplied
or with an identical fuse. Repeated failure
of the fuse points to a fault that should be
investigated by your retailer or Naim Audio.
2.3 Non-rewirable Mains Plugs
If a non-rewirable plug is cut from a mains
lead (for whatever purpose) the plug MUST
be disposed of in a way to render it totally
useless. Considerable shock hazard exists if
the cut-off plug is inserted into a mains outlet.
2.4 Mains Circuits and Cables
A hi-fi system usually shares a mains circuit
with other household equipment, some of
which can cause distortion of the mains
waveform. This distortion can in turn lead to
mechanical hum from mains transformers.
Some Naim transformers are large in size,
making them relatively sensitive to such
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