NAIM NAIT5 User manual

OWNERS MANUAL
I n t e g r a t e d A m p l i f i e r

page
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.
11.0 Equipment Installation
1.1 cables and
connections
2 2.0 Getting Started
2.1 switching on and off
2.2 running in
2.3 mains supply
2.4 siting the equipment
2.5 if you have a problem
3 3.0 Warnings
44.0 Connection
4.1 mains lead
4.2 non-rewireable mains
plugs
4.3 fuse carrier
4.4 plug fuses
5Nait 5 Integrated Amplifier
10 Narcom 2 Remote Control
12 Specifications,
EC Declaration of Conformity
to Appropriate Standards
1

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.
2

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:
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.
3

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 Nor 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.
4
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.

5
Nait 5 Integrated Amplifier
inputs
The Nait 5 has 6 inputs - CD, Tuner, Tape, A/V, AUX1 and AUX 2.
Tape, A/V and AUX 1 all have record output facilities for your cassette deck, VCR etc.
The AUX 2 input is provided with two sockets. Use the right hand socket (when viewed from the rear)
for commenting your usual ancillary equipment. The extra (left hand) socket is for use with separate
phono stage, such as the Prefix or Stageline. Only one of these sockets may be used at a time, for
safety as well as performance. Your amplifier will have a protective cover fitted over the extra socket.
If you wish to use this socket it is advisable to refit the protective cover over the unused socket to
prevent mistakes.
tape facilities and monitor button
The tape monitor (mon) button allows you to listen to the output of a 3-head tape machine while
recording to check the “off-tape” signal. The source for recording is chosen by the input selector
buttons in the normal way.
Pressing the monitor button during recording allows the output from a 3-head tape machine
connected to either tape, A/V or AUX 1 to be heard. After pressing “mon”, select whichever one of
these your tape machine is connected to.
A second press returns the amp to normal position.
mute button
Pressing the mute button reduces the output from the loudspeakers to zero. (This will not affect any
recordings taking place at the same time).
balance adjustment
Balance adjustment (left to right) on the Nait 5 is operated electronically within the amplifier. This is
controlled by the remote handset. Please see separate instructions on page 10.
Each of the inputs can be adjusted so that the volume level from all sources can be matched to one
another. The remote handset enables this function. Please see separate instructions on page 10.
preamp, power amp and power supply options
The Nait 5 has separate preamplifier and power amplifier sections built in to one chassis. These can
be reconfigured for use separately with an external power supply and/or a power amplifier for
improved sound quality.
To enable this the link plugs on the rear panel need to be removed and new connections made.
1. to add a separate power supply to the preamp section:
Switch off at mains
Refer to diagram on page 7
Remove all the link plugs
Connect SNAIC 5 between nait and power supply and SNAIC
4 between power supply and nait as shown in the diagram
Switch on power supply and amplifier.
2. to use the preamp section only with a separate power amp:
Switch off at mains
Refer to diagram on page 8
Remove the double link plug, leaving the link in “signal out A”
Connect SNAIC between nait and power amp as shown in
diagram.
3. to add a separate power supply and power amp:
Switch off at mains
Refer to diagram on page 9
Connect SNAIC 5 between nait and power supply and SNAIC
4 between power supply and power amp as shown in diagram.
note
The negative input and output connections
are all common.
The mains earth (ground) should always be
connected regardless of what other
equipment is used in conjunction with
Naim Audio amplifiers. This only grounds
the case and the electrostatic screen within
the transformer, and is not connected to
the signal negative. In order to avoid hum
loops, the signal negative of the whole
system should be connected to the mains
earth (ground) in one place. This will
normally be in the turntable or cd player.

6
ch1 ch1
ch 2
-ve
ch2
Tape, A/V, AUX 1,
inputs
ch1 nc
nc
-ve
ch2
CD, Tuner & Aux 2
inputs
+Vin +Vin
ch1
-ve
ch2
Signal out A
mutemon cd tuner tape A/V AUX 1 AUX 2
Nait series 5 front
Nait series 5 rear
mains input
power
volume
to left loudspeaker
ch1 to right loudspeaker
ch2
link plugs fitted
+ - - +
input
signal
out A
signal
out B cdtunertapeA/VAUX 1AUX 2
please note
The nait 5 features various technologies to reduce microphonic effects, in particular a compliant
mounting for the main circuit boards and the din sockets on the rear. Some movement of the board
and sockets when connecting/disconnecting is normal.

nait 5 connected to power supply
mains input
power
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
cable
direction
marker
4 to 4 pin DIN
5 to5 pin DIN
Interconnect Cables
7
signal
out A
power
out A
signal
out B
signal
out C
signal
out D
for CD5, Headline
or Stageline
(additional
interconnects
required)
link plug fitted

8
nait 5 connected to power amp
NB - do not connect nait 5 to mains in this configuration.
power amp
+ - - +
input
signal
out A
signal
out B cdtunertapeA/VAUX 1AUX 2
input
cable
direction
marker
4 to 4 pin DIN
5 to5 pin DIN
Interconnect Cables
mains input
power
to left loudspeaker
ch1 to right loudspeaker
ch2
+ - - +

9
nait 5 connected to flatcap 2 power supply & power amp
NB - do not connect nait 5 to mains in this configuration.
+ - - +
input
signal
out A
signal
out B cdtunertapeA/VAUX 1AUX 2
mains inputpower
flatcap 2 power supply
power amp
signal
out A
power
out A
signal
out B
signal
out C
cable
direction
marker
4 to 4 pin DIN
5 to5 pin DIN
Interconnect Cables
mains input
power
to left loudspeaker
ch1 to right loudspeaker
ch2
+ - - +
signal
out D
link plug fitted

10
n2narcom 2 remote handset
NARCOM 2 is a multi-functional remote control handset designed to be used with Naim Audio CD
players, integrated amplifiers, pre-amplifiers and preset tuners. The handset control configuration is
based around three types of keys: System Component Keys, Global Keys and Soft Keys.
1 System Component Keys
These keys switch the operation of the “Soft Keys” into modes appropriate to each system component
(preamp, CD or tuner).
preamp: Switches the action of the Soft Keys to that appropriate for an integrated or pre-amplifier.
cd: Switches the action of the Soft Keys to that appropriate for a CD player.
tuner: Switches the action of the Soft Keys to that appropriate for a preset tuner.
2 Global Keys
These keys operate specific component functions regardless of the System Component Key setting.
preamp
vol (up and down): Adjusts the amplifier output volume and the volume control
position.
mute: Reduces the amplifier output volume to zero. A second press restores
the volume. The mute button on the amplifier will illuminate when mute
is selected.
bal (left and right): Adjusts the output channel balance.
Some Naim amplifiers have control of balance available only from the
remote handset. On these products the balance will automatically “centre”
as it reaches the mid point. Balance centring is indicated by a flashing
volume control indicator. To resume adjustment once the balance has
centred, bal key must be released and re-pressed.
mon: The mon button enables the output of a 3-head tape machine to be heard
while recording in order to check the “off-tape” signal. The source to be
recorded is chosen by the input selector buttons in the normal way.
After pressing mon,select the input to which your machine is connected.
A second operation of the mon key restores normal output.
compact disc
prev: Selects the previous track. From a stopped position prev will select the last
track.
next: Selects the next track.
stop: Stops the CD. Holding the stop key for more than a second will also cancel
previously set-up program and display preferences.
play: Plays the CD. Pressing play while a track is playing will return the player
to the beginning of that track.
<<: Fast reverses the CD when in play mode.
>>: Fast forwards the CD when in play mode.
repeat: Puts the CD into repeat mode. A complete disc or programmed disc
selection will repeat until stop is pressed.
pause: Pauses a playing CD. Pressing pause a second time will start the disc again.
tuner
mode: Switches the tuner sequentially through “frequency”,“scan” and “preset”
modes. Modes are indicated by the indicators on the tuner display.
up & down: These keys both have three possible functions depending upon the selection of the
mode key. In frequency mode the up and down keys adjust the tuning frequency
in 0.05MHz steps. In scan mode the up and down keys will cause the tuner to
search for stations. In preset mode the up and down keys will tune to the next
numbered preset.
mono: Toggles between mono and stereo operation. The tuner display will indicate stereo
when both stereo operation is selected and a stereo signal is received. The mono
button on the tuner will illuminate when mono is selected.
System
Component
Keys
Global Keys
(Amplifier)
Global Keys
(CD Player)
Global Keys
(Tuner)
Soft Keys

11
3 Soft Keys
These keys operate functions depending on the System Component Key setting.
numeric keypad: In preamp mode the numeric keys will switch between the amplifier inputs
(1 - cd, 2 - tuner, 3 - tape, 4 - av, 5 - aux 1, 6 - aux 2). In cd mode the numeric keys will select tracks.
In tuner mode the numeric keys will select tuner presets or can be used directly to input station
frequencies.
prog: In preamp mode the prog key function varies depending upon the specific amplifier model in
use. Firstly, some models incorporate a programmable volume control system that enables different
source component output levels to be matched. Secondly, some models incorporate optional
automatic source switching which will switch the input of the amplifier as soon as any handset key
appropriate to a particular source is operated. For example, if the tuner input is selected on the
amplifier and the CD play key is operated on the handset, the amplifier will switch to the CD input.
Thirdly, if you have a surround sound processor connected to the A/V input, the volume control on the
amplifier can be disabled, allowing the processor to take over control of the output level from the
power amplifier stage (unity gain).
To program the volume control for each input first set the volume control to a comfortable listening
level with the loudest source (probably CD). Enter program mode by pressing and holding the prog key
until the amplifier volume control indicator flashes. Select the input to be adjusted using the handset
and use the vol up and down keys to set the volume to a comfortable listening level. The amplifier
volume control will not rotate during this operation. Select a further input to adjust. To exit program
mode press and hold the prog key until the volume control indicator stops flashing, or operate any
control on the amplifier.
To access automatic source switching enter program mode as described above. Use the handset mon
key to toggle automatic switching on and off. The mon button on the amplifier will illuminate when
source switching is automated. Exit the program mode as above.
To utilise the surround sound processor unity gain function, enter program mode as described above.
Use the handset mute key to toggle the function on and off. The mute button on the amplifier will
illuminate when unity gain is selected. Exit the program mode as above. The unity gain function
should only be used where the amplifier is used in a correctly configured A/V system. Damage may
result if the unity gain feature is used inappropriately.
To return to the default settings, press and hold the prog key until the amplifier volume control
indicator flashes. Press and hold disp key until the volume control indicator stops flashing.
In cd mode the prog key enables specific CD tracks and their play order to be selected. To select a play
order select a track number from the numeric keypad followed by the prog key until the desired
selection is complete. During selection, the track number indicated in the player display will be
followed by either “P”, “-” or a space. “P” indicates that the track is already selected. “-” indicates that
the track can be selected. A space indicates that there is no more memory available.
The prog key can also be used to delete tracks from a play order. To delete a track, press and hold the
prog key until the prog indicator in the CD display illuminates then delete the track or tracks using the
numeric keypad followed each time by a further operation of the prog key. During deletion the track
number indicated in the player display will be followed by either “C”, “-” or a space. “C” indicates that
the track is already deleted. “-” indicates that the track can be deleted. A space indicates that there
is no more memory available.
The play order can be reviewed by pressing prog while the player is either stopped or playing. The
player display will then scroll through the selected tracks. The prog indicator on the player display will
illuminate when a play order has been programmed. To clear memory press and hold the stop key.
In tuner mode the prog key enables specific FM station frequencies to be assigned to preset memory.
To assign a station to a preset first tune manually by inputting the station frequency directly from the
numeric keypad or by using the up or down keys (or scan). Press and hold the prog key on the handset.
The tuner is now in preset programming mode - the preset indicator will flash and the display will
show “— — ”. Press the desired pre-set number from the numeric keypad. The display will show “— ” or
“P” if the preset number is already in use. Exit from program mode and save the new or overwritten
preset by pressing and holding the prog key. To exit program mode without saving (or overwriting) a
preset select “0 0” on the numeric keypad. To erase a preset number, select the preset and press and
hold the display key. To clear all preset numbers press and hold the program key followed by the
display key.
display: In cd mode the display key will scroll through these options: tracks (“time” indicator off),
time (“time” indicator on) and display off. In tuner mode the display key will simply toggle between
on and off.

12
Naim Audio Southampton Road Salisbury England SP1 2LN
Tel: [phone] www.naim-audio.com
OWNIT •issue 3 •May 2001
EC Declaration of Conformity to
Appropriate Standards
Manufacturer
Naim Audio Limited
Southampton Road
Salisbury England
SP1 2LN
Products
nait 5 integrated amplifier
nap 170 power amplifier, 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)
Specifications
nait 5
Nominal Input Sensitivities (Tuner, Tape,CD,etc) 75mV, 100K
Overload margin, on all inputs at all audio frequencies 35dB
Output Levels,Tape 75mV, 600
Power Output Continuous 8 , 30W/ch
Transient 125 VA
Mains Supply 100V, 115V, 230V 50 or 60Hz
CaseSize (H x W x D) 58.4 x 432 x 301mm