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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 power-Line mains cable.

3  General  Installation

Naim equipment is designed to offer the 
finest performance possible avoiding 
compromise wherever practical. This 
can lead to circumstances that may be 
unfamiliar. The notes that follow contain 
advice specifically related to Naim 
equipment as well as more general 
warnings about the use of domestic audio 
products. Please read them carefully.

3.1  Siting  The  Equipment

in order to reduce the risk of hum audible 
from the loudspeakers, power supplies 
and power amplifiers should be located 
a reasonable distance away from other 
equipment. The maximum separation 
distance for connected equipment is that 
allowed by the standard interconnect lead.

some naim equipment is extremely heavy. 
Check the weight of the equipment prior 
to lifting and if necessary use more than 
one person so that it can be moved safely. 
ensure that your equipment rack or table 
can easily support the weight and is stable.

3.2  Switching  on

source components and power supplies 
should be switched on before power 
amplifiers. always switch amplifiers off 
and wait a minute before connecting or 
disconnecting any leads. always use the 
power switch on the product rather than a 
mains outlet switch.

a “thump” may be heard from the 
loudspeakers as power amplifiers are 
switched on. This is normal, will not cause 
any loudspeaker damage and does not 
point to any fault or problem. a mild “pop” 
may also be heard shortly after equipment is 
switched off.

3.3  running  In

naim equipment takes a considerable time 
to run in before it performs at its best. The 
duration varies, but under some conditions 
the sound may continue to improve for 
over a month. better and more consistent 
performance will be achieved if the system 
is left switched on for long periods. it is worth 
remembering however that equipment left 
connected to the mains can be damaged 
by lightning.

3.4  radio  Interference

in some circumstances, depending 
on where you live and the earthing 
arrangements in your home, you may 
experience radio frequency interference. 
Controls on broadcasting in some territories 
allow very high levels of radio frequency 
radiation and both the choice and exact 
siting of equipment may be critical. 
susceptibility to radio frequency interference 
is related to the wide internal bandwidth 
necessary for high sound quality. a radio 
frequency filter kit is available for some 
naim equipment but sound quality will 
be progressively compromised as more 
elements of the kit are fitted. in situations of 

accessories

Summary of Contents for NAPSC - 2

Page 1: ...NAPSC i SUPPLY STAGELINE HEADLINE owners manuaL ENGLISH...

Page 2: ...ith the relevant EMC and Safety Standards and where applicable also complies with the limits for a class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reas...

Page 3: ...d 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...

Page 4: ...ne person so that it can be moved safely Ensure that your equipment rack or table can easily support the weight and is stable 3 2 Switching On Source components and power supplies should be switched o...

Page 5: ...ease contact your local distributor or Naim Audio directly if any difficulties cannot be resolved Some Naim equipment is made in special versions for different territories and this makes it impractica...

Page 6: ...should be installed in its final location before connecting cables or switching on Ensure that power amplifiers are switched off and the preamplifier volume is turned down before power supplies are s...

Page 7: ...NAPSC via captive lead Flatcap via SLIC lead to Power Out Socket B Hi Cap via SLIC lead to Socket 4 Supercap via SLIC lead to Socket 2 7 1 Headline Rear Panel 6 i Supply The i Supply is a simple power...

Page 8: ...eline can also be powered via the power supply output on NAC 552 NAC 252 8 1 Stageline Rear Panel input left signal ground output socket 1 output socket 2 ch2 ch1 nc ve Socket 1 ve ve ve ch1 ch2 Socke...

Page 9: ...7 4 pin to 5 pin DIN cable 8 4 Stageline connected to NAC 152 XS and Flatcap XS 8 3 Stageline connected to NAC 152 XS cable direction marker 240 5 to 5 pin DIN Interconnect Cables Accessories...

Page 10: ...ilar electronic apparatus EMC Emissions EN 55013 Sound and television broadcast receivers and associated equipment Radio disturbance characteristics Limits and methods of measurements EMC Immunity EN...

Page 11: ......

Page 12: ...Naim Audio Limited Southampton Road Salisbury England SP1 2LN Tel 44 0 1722 426600 Fax 44 0 871 230 1012 W www naimaudio com E info naimaudio com Part No 12 001 0047 Iss 2...

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