1
1 Connections
It is important for both safety and performance that
the standard cables supplied are not modified.
1.1 Interconnect Cables
If options are available with your equipment and
installation, DIN interconnect sockets should be used in
preference to RCA Phono sockets. One end of each Naim
interconnect cable is marked with a band to establish
its correct orientation. The band denotes the end that
connects to the signal source.
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.
1.2 Loudspeaker Cables
Loudspeaker cables are vitally important. They should
each be at least 3.5 metres long and of equal length. The
recommended maximum is normally 20 metres although
longer cables may be viable with some Naim amplifiers.
Some Naim amplifiers are designed only to work with
Naim loudspeaker cable and using alternatives may
degrade the performance or even damage the amplifier.
Other Naim amplifiers can be used with any high quality
loudspeaker cable although we recommend that Naim
loudspeaker cable is used. Naim loudspeaker cable is
directional and should be oriented so that the printed
arrow points towards the speakers. The Naim loudspeaker
connectors supplied are designed to comply with
European safety legislation and must be used.
Contact your local retailer or distributor for further advice
on loudspeaker cables and connectors.
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
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
CD 555, CDs3, CDX2, CD5x and CD5i CD players and their associated or upgrade
power supplies. It begins with some general installation notes and statutory safety
warnings. Product specific information begins in section 4.
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 itself.
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 distortion, and it may be necessary
to take account of transformer hum when siting your
equipment.
Transformer hum is not transmitted through the speakers
and has no effect on the performance of the system;
however, a separate mains circuit may reduce it. Such
a circuit (ideally with a 30 or 45 Amp rating) will also
generally improve system performance. Advice on the
installation of a separate mains circuit should be sought
from a qualified electrician.
Do not substitute alternative mains leads and plugs to
those supplied. They are selected to offer the best possible
performance.
Introduction
