NAIM Recording Equipment Instructions Manual - page 3
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.
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 extreme radio
interference Naim equipment may be unsuitable.
3.5 Lightning Precautions
Your Naim hi-fi system can be damaged by lightning and should
be turned off and disconnected from the mains when there is
risk of lightning. For complete protection all mains plugs and any
aerial cables should be disconnected when not in use.
3.6 Problems?
Consumer protection varies from country to country. In
most territories a retailer must be prepared to take back
any equipment he has sold if it cannot be made to work
satisfactorily. A problem may be due to a fault in the system or
its installation so it is essential to make full use of your dealer’s
diagnostic skills. Please 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 impracticable to arrange
international guarantees. Please establish the local guarantee
arrangements with your retailer. Contact Naim Audio directly for
help and advice if necessary.
3.7 Service and Updates
It is essential that repairs and updates are only carried out
by an authorised Naim retailer or at the Naim Audio factory.
Many components are custom made, tested or matched and
appropriate replacements are often unobtainable from other
sources.
Direct contact to Naim for service or update information should
be made initially through Customer Services:
Tel:
+44 (0)1722 426600
Email:
info@naimaudio.com
Please quote the product serial number (found on its rear panel)
in all correspondence.
Statutory and Generic Infor mation – English