NAIM STAGELINE User manual

OWNERS MANUAL
St a g e l i n e
Phono Stage

page
21.0 Equipment Installation
1.1 cables and
connections
3 2.0 Getting Started
2.1 switching on and off
2.2 running in
2.3 mains supply
4 2.4 siting the equipment
2.5 if you have a problem
5 3.0 Warnings
74.0 Connection
4.1 mains lead
4.2 non-rewireable mains
plugs
4.3 fuse carrier
4.4 plug fuses
9Stageline Phono Stage
12 EC Declaration of Conformity
to Appropriate Standards

2
1.0 Equipment installation
Normally your Naim equipment will have been installed by the dealer who sold it to you even if you live outside
their immediate vicinity. Your dealer is responsible for making sure that the system sounds exactly as it should and
information given here is not intended to reduce this responsibility in any way.
1.1 cables and connections
Please do not modify the standard interconnect cables supplied with your Naim equipment. This is important for
safety as well as performance. One end of each cable is marked with a band to establish its correct orientation. The
band always marks the end that connects to the signal source.
Loudspeaker leads are also very important. Naim loudspeaker cable is correct for your system and your dealer will
make up leads to suit your equipment installation. The leads should each be at least 3.5 metres long and of equal
length. The recommended maximum is 20 metres. Loudspeaker leads are, like interconnect leads, directional, and
should be connected so that the printed arrow points towards the speakers. Using alternative loudspeaker cable
will degrade performance, and may even damage your amplifier. An exception to these loudspeaker cable
constraints is the nap 6-50 multi-room power amplifier. The nap 6-50 is designed to be tolerant of both a wide
variety of cable types, and cable runs well in excess of 20m. The loudspeaker connectors supplied with all Naim
amplifiers and loudspeakers have been specifically designed to make a robust mechanical connection. It is essential
that these are used in order to comply with current European safety regulations.
All the plugs and sockets supplied with your Naim equipment have been chosen because they make the best
possible connection for their purpose. A poor contact will degrade the signal substantially and plugs and sockets
should look 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. Special contact cleaners and contact enhancers should
not be used as they tend to deposit a film which is very difficult to remove and may degrade the sound.

3
2.0 Getting Started
2.1 switching on and off
Source components and power supplies for cd players, tuners, preamplifiers and crossovers should be switched on
before switching on the amplifier(s). Always switch the amplifier(s) off and wait about a minute for its power supply
capacitors to discharge before connecting or disconnecting any leads. Always use the power switch on the product
rather than a mains outlet switch.
2.2 running in
Your Naim equipment will take a considerable time to run-in before it performs at its best. The duration varies, but
under some conditions you will find that the sound continues to improve for as much as five weeks. Better and more
consistent performance will be achieved if the system is left switched on for long periods. It is worth remembering
however that all electronic equipment can be damaged by lightning. Please read the warnings section.
2.3 mains supply
Where fused plugs are used 13 amp fuses should be fitted. Fuses of a lower rating will fail after a period of use. A
hi-fi system usually shares a mains circuit with other household equipment some of which can cause distortion of
the mains waveform. In some Naim equipment such distortion can lead to a mechanical hum from the transformers.
The hum is not transmitted through the speakers and has no effect on the performance of the system but is purely
local to the transformer itself. A separate fused mains circuit (like that reserved for electric cookers) may reduce
transformer hum. Such a circuit (ideally with a 30 or 45 Amp rating) will also have a lower impedance, supply
cleaner power, and consequently improve system performance.
Do not wire voltage dependent resistors or noise suppressors into mains plugs. They degrade the mains supply and
the sound.

2.4 siting the equipment
Power supplies and amplifiers should be located a reasonable distance away from other equipment. This separation
will stop transformer radiation causing hum audible from the loudspeakers. The minimum recommended distance
is 300mm (12 inches), and that allowed by the standard interconnect lead is the maximum.
Some Naim equipment is extremely heavy. Ensure than your equipment rack or table can easily support the weight
and is stable.
2.5 if you have a problem
Legal consumer protection varies from country to country. In most territories a dealer must be prepared to take back
any Naim equipment he has sold you if he cannot make it work to your satisfaction in your own home. A problem
may be due to a fault in any part of the system or its installation so it is essential to make full use of your local
dealer’s diagnostic skills on site. Please contact your local distributor, or Naim at the address in the back of this
manual, 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 guarantee
arrangements with your own dealer at the time of sale. We are always available to offer help and advice.
It is essential that repairs and updates are only carried out by an authorised Naim dealer, or at the factory by Naim
itself. Many components are made, tested or matched specially for Naim and appropriate replacements are often
unobtainable from non-specialist sources.
4

5
3.0 Warnings
Naim equipment is designed to offer the finest sound quality that can be achieved, avoiding compromise wherever
possible. This can lead to circumstances that may be unfamiliar. The material that follows contains advice
specifically related to Naim equipment as well as more general warnings about the use of domestic audio products.
Please read it carefully.
The transformers in Naim power amplifiers and power supplies may sometimes make a mechanical noise caused by
distortion of the mains waveform. Naim transformers are large in size and have heavy gauge secondary windings
making them relatively sensitive to such distortion. A separate mains circuit for your hi-fi system may reduce the
effect while also giving an overall improvement in sound quality. It may be necessary however to take account of
mechanical transformer noise when siting your equipment.
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. If there is a known problem
in your locality it is advisable to arrange for a home demonstration before purchase to find out if Naim equipment
is likely to be affected. Susceptibility to radio frequency interference is related to the wide internal bandwidth
necessary for high sound quality. Systems incorporating moving coil phono preamplifiers and active crossovers are
more likely to suffer. 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.
Your Naim hi-fi system can be damaged by lightning. Power amplifiers are particularly at risk and should be turned
off when there is risk of lightning strike. For complete protection all mains plugs and any aerial cables should be
disconnected when not in use.
Equipment must not be exposed to dripping or splashing and no objects filled with liquid, such as vases, should be
placed on the equipment.

important
In order to comply with current European safety
regulations it is essential that the Naim loudspeaker
connectors supplied with amplifiers and loudspeakers
are used.
Do not under any circumstances allow anyone to
modify your Naim equipment without first checking
with the factory, your dealer, or your distributor.
Unauthorised modifications will invalidate your
guarantee.
For your own safety do not under any circumstances
open Naim equipment without first disconnecting the
mains.
The following label is attached to all mains powered
equipment:
6

7
4.0 Connection
4.1 mains lead
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings
identifying the terminals in your plug proceed as follows:
The wire which is coloured GREEN-AND-YELLOW must be connected to the terminal in the plug which is marked
by the letter Eor by the safety earth symbol or coloured green or green-and-yellow.
The wire which is coloured BLUE must be connected to the terminal in the plug which is marked with the letter N
or coloured black.
The wire which is coloured BROWN must be connected to the terminal in the plug which is marked with the letter
Lor coloured red.
4.2 non-rewireable mains plugs
If a non-rewireable plug is cut from a mains lead (for whatever purpose) the plug MUST be disposed of in a way to
render it totally unusable. Considerable shock hazard exists if the cut-off plug is inserted into a mains outlet.
4.3 fuse carrier
Should the plug fuse carrier be damaged or lost, the correct replacement must be obtained from your dealer or from
Naim direct. Do not use the plug until the fuse carrier is replaced.
4.4 plug fuses
Replace only with ASTA or BS 1362 approved fuses.

note
This equipment has been tested and found to comply with 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 reasonable protection against harmful interference in
a residential installation. This equipment generates, uses and can radiate radio frequency
and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning off and
on, the user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult your Naim dealer or an experienced radio/TV technician for help.
8

9
Stageline Phono Stage
Stageline is a separate phono stage
suitable for one type of cartridge,
either moving magnet or moving coil.
Please confirm the type required with
your dealer at time of purchase.
Stageline can be powered either by a
separate flatcap or Hi-cap, or from
the dedicated supply built-in to the
NAIT5 or NAC52 preamp.
Please see the diagrams for connection
options.
Power indicator
output(input)
ch2 right
ground
(input)
ch1 left

10
+Vin +Vin
ch1
-ve
ch2
output
mains input
power
to left loudspeaker
ch1 to right loudspeaker
ch2
link plugs fitted
+ - - +
input
signal
out A
signal
out B cdtunertapeA/VAUX 1AUX 2
Stageline connected to nait 5
ch2 rightch1 left
ground
output
cable
direction
marker
5 to5 pin DIN
Interconnect Cables

11
to left loudspeaker
ch1
to right loudspeaker
ch2
+ - - +
input
signal
out A
signal
out B cdtunertapeA/VAUX 1AUX 2
mains inputpower
flatcap 2 power supply
signal
out A
power
out A
signal
out B
signal
out C
signal
out D
Stageline connected to nait 5 with
power supply ch2 rightch1 left
ground
output
link plug fitted
4 to 4 pin DIN
5 to5 pin DIN
4 to5 pin DIN
Interconnect Cables

12
EC Declaration
of Conformity
to Appropriate
Standards
Manufacturer
Naim Audio Limited
Southampton Road
Salisbury England
SP1 2LN
Products
Stageline, nait 5, flatcap 2 power supply
Safety
HD 195-S6
EN 60 065
EMC
Emissions Tested to EN 55013
Sound and television broadcast
receivers and associated equiment
Immunity Tested to EN55020
Electromagnetic immunity of
broadcast receivers and associated
equipment
In accordance with CISPR 16-1
Radio disturbance and immunity
measuring apparatus
CISPR 16-2
Methods of measurement of
disturbances and immunity
IEC 801-2 8KV (air gap)
4KV (contact)
(performance criterion B)
IEC 801-3 3V/m 20dB
(performance criterion A)
IEC 801-4 1KV (AC lines)
0.5KV (signal lines)
(performance criterion B)

Naim Audio Southampton Road Salisbury England SP1 2LN
Tel: [phone] www.naim-audio.com
OWNSL •issue 1 •May 2001