REFERENCE MANUAL
POWER SUPPLIES
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Contents
Section Page
Contents
1 Connections E1
1.1 Interconnect Cables E1
2 Mains Power E1
2.1 Mains Plug Wiring E1
2.2 Equipment Fuses E1
2.3 Non-rewirable Mains Plugs E1
2.4 Mains Circuits and Cables E1
3 General Installation E2
3.1 Siting The Equipment E2
3.2 Switching On E2
3.3 Running In E2
3.4 Radio Interference E2
3.5 Lightning Precautions E2
3.6 Problems? E2
3.7 Service and Updates E2
4 Installation E3
4.1 CD 555 PS Rear E3
4.2 SuperCap Rear E3
4.3 XPS Rear E3
5 Installation E4
5.1 Hi-Cap Rear E4
5.2 XP5 XS Rear E4
5.3 FlatCap XS Rear E4
5.4 NAPSA Rear E5
5.5 NAPSC Rear E5
6 Specifications E5
7 Declaration of Conformity E6
8 Statutory Safety Warnings E6
Introduction
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
all power supplies. It begins with some general installation notes and statutory safety
warnings. Product specific information begins in Section 4.
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. Naim Hi-Line
interconnect cables will provide the best results.
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 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.
Use only the mains leads and plugs supplied or the Naim
PowerLine mains cable.
Note: Please read
the Statutory Safety
Warnings found at the
end of this manual.
E1
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