Naim NA-P 200, NA-P 500, PREAMPLIFIERS owners manual

owners manuaL

PreamPLIFIers

InTeGraTeD amPLIFIers,Power amPLIFIers

enGLIsH DeuTsCH FranÇaIs ITaLIan0

saFeTY InsTruCTIons

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 retailer, or your distributor. unauthorised modifications will invalidate your guarantee.

equipment must not be exposed to dripping or splashing and no objects filled with liquid, such as vases, should be placed on the equipment.

For your own safety do not under any circumstances open naim equipment without first disconnecting it from the mains.

warning: an apparatus with CLass I construction shall be connected to a mains socket outlet with a protective earthing connection.

where the mains plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable. To disconnect the equipment from the mains remove the mains plug from the mains outlet.

The following label is attached to all mains powered equipment:

warnInG

THIs aPParaTus

musT Be earTHeD

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 retailer or an experienced radio/TV

technician for help.

Contents

Page section

e1 1 Connections e1 2 mains Power e2 3 General Installation e3 4 naC 552 Introduction and Installation e4 5 naC 552 Controls and Connections e5 6 naC 552 specification e6 7 naC 252 Introduction and Installation e6 8 naC 252 Controls and Connections e7 9 naC 252 specification e8 10 naC 282 Introduction and Installation e8 11 naC 282 Controls and Connections e10 12 naC 282 specification e11 13 naC 202 Introduction and Installation e11 14 naC 202 Controls and Connections e12 15 naC 202 specification e13 16 naC 152 Xs Introduction and Installation e14 17 naC 152 Xs Controls and Connections e16 18 naC 152 Xs specification e17 19 supernait Introduction and Installation e19 20 supernait Controls and Connections e21 21 supernait specification e22 22 nait Xs Introduction and Installation e23 23 nait Xs Controls and Connections e25 24 nait Xs specification e26 25 nait 5i Introduction and Installation e26 26 nait 5i Controls and Connections e27 27 nait 5i specification e28 28 Preamplifier and Integrated amplifier

operation e31 29 r-com remote Handset e32 30 narCom 4 remote Handset e33 31 naP 500 Installation and operation e34 32 naP 500 Connections e34 33 naP 500 specification e35 34 naP 300 Installation and operation e36 35 naP 300 Connections e36 36 naP 300 specification e37 37 naP 250 Installation and operation e37 38 naP 250 Connections e37 39 naP 250 specification

E38 40 NAPV 145 Installation and Operation

E38 41 NAPV 145 Connections

E38 42 NAPV 145 Specification

e39 43 naP 200 Installation and operation e39 44 naP 200 Connections e39 45 naP 200 specification e40 46 naP 155 Xs Installation and operation e40 47 naP 155 Xs Connections e40 48 naP 155 Xs specification

E41 49 NAPV 175 Installation and Operation

E41 50 NAPV 175 Connections

E42 51 NAPV 175 Specification

e42 52 Declarations of Conformity

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 preamplifiers, integrated amplifiers and power amplifiers. 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.

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.

1.2 Loudspeaker Cables

Loudspeaker cables are vitally important. They should each be at least 3.5 metres long and of equal length. The recommended maximum is normally 20 metres although longer cables may be viable with some Naim amplifiers.

Some Naim amplifiers are designed only to work with Naim loudspeaker cable and using alternatives may degrade the performance or even damage the amplifier. Other Naim amplifiers can be used with any high quality loudspeaker cable although we recommend that Naim loudspeaker cable is used. Naim loudspeaker cable is directional and should be oriented so that the printed arrow points towards the speakers. The Naim loudspeaker connectors supplied are designed to comply with European safety legislation and must be used.

Contact your local retailer or distributor for further advice on loudspeaker cables and connectors.

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 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

The wire coloured terminal in the plug marked with the letter L or coloured

reD.

Green-anD-YeLLow must be

n or coloured BLaCK.

Brown must be connected to the

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.

Do not substitute alternative mains leads and plugs to those supplied. They are selected to offer the best possible performance.

e1

Introduction

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.

Some speakers and stands are intended to be used with floor spikes fitted. Care should be taken when siting and moving them to avoid personal injury or damage to cables and surfaces. Floor protectors are available from your local dealer or distributor to protect non carpeted floors.

3.2 switching on

Source components and power supplies should be switched on before the 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 strike. 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 factory by Naim itself. 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.

e2

NAC 552 Preamplifier

4 naC 552 Introduction and Installation

The naC 552 preamplifier does not incorporate an internal power supply and can be used only in conjunction with the naC 552Ps power supply. Diagram 5.3 illustrates connection of the naC 552 to its power supply.

The four transit screws on the underside of the naC 552 case should be removed before use and must be replaced if the unit is to be re-packed and shipped. These transit screws must not be used in any other naim product. Do not invert the naC 552 once the transit screws are removed.

The preamplifier and power supply should be installed on a dedicated equipment stand intended for the purpose. Do not stand either directly on top of another item of equipment. Care should be taken to ensure that the preamplifier is level.

The preamplifier and power supply should be installed in their final locations before connecting cables or switching on. ensure that power amplifiers are switched off and that the preamplifier volume is turned down before the power supply is switched on. The power button is located on the power supply front panel.

The units are heavy and care should be taken when lifting or moving them. make sure that the surface on which they are to be placed can support their weight.

The following

section 4 paragraphs describe installation features and functions specific to the naC 552. operational features common to all preamplifiers and integrated amplifiers are described in section 28.

Both r-Com and narCom 4 remote handsets are included with the naC 552. The r-com is intended for day-to-day use while the narCom 4 can be used for handset-based setup and programming.

4.1 source Inputs and record outputs

The input selection buttons arranged along the upper bank select the source signal to be routed to the power amplifier and the loudspeakers. Below them, in the lower bank, is a corresponding array of buttons which select the signal to be routed to the preamplifier’s record outputs.

These separate source and record sections enable one source (a CD player, for example) to be listened to whilst the output from another (say, the tuner) is simultaneously selected for recording.

note: It is possible to lock the record controls and prevent

accidental de-selection during recording. Record-lock is switched on or off by pressing the source mono button four times within six seconds.

Indicators are fitted to the NAC 552 rear panel above each input socket. These indicators illuminate to provide information on input selection and on input mapping setup and programming.

4.2 Input socket assignment

Any NAC 552 source input socket can be selected by any button. For example, while the NAC 552 default setup is for the CD input button to select input socket No. 2, custom programming of input assignment could enable any input socket to be selected by pressing the CD button. Assigning of each record button follows the corresponding source button.

Input assignment setup is accessed through the NAC 552 program mode. To switch into (or exit from) program mode press and hold the prog key on the remote handset (in preamplifier mode). Program mode is indicated by a flashing indicator on the front panel volume control and the record selection indicators extinguishing.

note: If no function is operated within five minutes of

entering program mode the NAC 552 will return to normal mode automatically.

Any of the six source buttons on the front panel can be assigned to any of the nine stereo inputs (seven DIN sockets and two RCA Phono socket pairs) on the rear panel. In program mode, as a source input is selected, a rear panel indicator will illuminate to designate the socket to which it is assigned.

To change the input socket assigned to a source button, select the source button and use the front panel record

mute and mono buttons to scroll along the input sockets.

If the input socket selected is already assigned to a source button the indicator above the socket will flash repeatedly. It is possible to assign one input socket to more than one source button but NOT to assign multiple input sockets to one source button. The remote handset record mute and mono functions can also be used to set up input assignment.

operational features common to all preamplifiers and integrated amplifiers are described in section 28

e3

NAC 552 Preamplifier

To exit from program mode press and hold the prog key on the handset until the record select indicators are restored and the volume indicator stops flashing.

Table 4.3 illustrates the NAC 552 default input assignment.

4.3 socket Types and assignment Defaults

Input socket socket source Button number Features assignment Default

1 DIN input Not assigned 2 DIN input CD 3 DIN input TUNER 4 DIN input/output, unity gain capable TAPE 5 DIN input/output, unity gain capable AV 6 DIN input/output AUX 1 7 DIN input, power output for phono stage AUX 2 8 RCA Phono pair Not assigned 9 RCA Phono pair Not assigned

5 naC 552 Controls and Connections

5.1 naC 552 Front

volume

5.2 naC 552 rear

balance

source

bank

record

bank

mono

mute

in 7 RC5 in

source and record selection

NAC 552PS

e4

in 1 in 2 in 3

Inputs 1, 2 & 3

ch1

ch2

-ve

nc nc

in 4

Inputs 4, 5 & 6

ch1 ch2

in 5 in 6 in 8

Input 7

-ve

ch1 (out)

ch2 (out)

+ve ch2

+ve

ch1

-ve

signal ground in 9

ch 1(L) ch 2(R)

ch 1(L)

NAC 552PS

ch 2(R)

NAC 552 Preamplifier

5.3 naC 552 Connected to naC 552Ps

note: For best performance the Burndy and 5 pin DIN

cables should be run as close together as possible.

additional signal output

mains input and fuse

6 NAC 552/NAC 552PS Specification

Input sensitivities: 75mV, 47kΩ overload margins: 40dB

(all inputs all audio frequencies).

main output Level: 0.775V, <50Ω Tape output Level: 75mV, 600Ω auxiliary Power outputs: For Naim phono stage Dimensions (H x w x D): Both 87 x 432 x 314mm weight: NAC 552 - 12.9kg

NAC 552PS - 13.9kg

mains supply (naC 552Ps): 100-120V or 220-240V, 50/60Hz

to mono or dual mono

power ampliers

cable direction marker

to stereo power

ampliers

Interconnect Cables

NAC 552 Burndy

240° 5 to 5 pin DIN

e5

NAC 252 Preamplifier

7 naC 252 Introduction and Installation

The naC 252 preamplifier does not incorporate an internal power supply and can be used only in conjunction with the supercap power supply. Diagram 8.3 illustrates connection of the naC 252 to its power supply.

The preamplifier and power supply should be installed on a dedicated equipment stand intended for the purpose. Do not stand either directly on top of another item of equipment. Care should be taken to ensure that the preamplifier is level.

The preamplifier and power supply should be installed in their final locations before connecting cables or switching on. ensure that power amplifiers are switched off and the preamplifier volume is turned down before the power supply is switched on. The power button is located on the power supply front panel.

The power supply is heavy and care should be taken when lifting or moving it. make sure that the surface on which it is to be placed can support its weight.

The following section 7 paragraphs describe installation features and functions specific to the naC 252. operational features common to all preamplifiers and integrated amplifiers are described in section 28.

7.1 source Inputs and record outputs

The input selection buttons arranged along the upper bank select the source signal to be routed to the power amplifier and the loudspeakers. Below them, in the lower bank, are a corresponding array of buttons which select the signal to be routed to the preamplifier’s record outputs.

These separate source and record sections enable one source (a CD player, for example) to be listened to whilst the output from another (say, the tuner) is simultaneously selected for recording.

note: It is possible to lock the record controls and prevent

accidental de-selection during recording. Record-lock is switched on or off by pressing the source mono button four times within six seconds.

7.2 Input socket assignment

The NAC 252 has six DIN input sockets and two alternative pairs of RCA Phono sockets. The RCA Phono sockets can be assigned individually to the CD and AUX 2 input buttons in place of the DIN sockets.

Input assignment setup is accessed through the NAC 252 program mode. To switch into (or exit from) program mode press and hold the prog key on the remote handset (in preamplifier mode). Program mode is indicated by a flashing indicator on the front panel volume control and the record selection indicators extinguishing.

note: If no function is operated within five minutes of

entering program mode the NAC 252 will return to normal mode automatically.

Once in program mode press and hold the remote handset 1 key to select or de-select the RCA Phono socket input for CD, and the remote handset 6 key to select or de-select the RCA Phono socket input for AUX 2. The corresponding front panel input buttons can similarly be used to select or de-select the RCA Phono socket inputs. The appropriate input button indicator will flash three times on selection of the RCA Phono option and once on selection of the DIN option.

To exit from program mode press and hold the prog key on the handset until the record select indicators are restored and the volume indicator stops flashing.

8 naC 252 Controls and Connections

operational features common to all preamplifiers and integrated amplifiers are described in section 28

e6

8.1 naC 252 Front

volume

balance

source

bank

record

bank

mono

mute

source and record selection

NAC 252 Preamplifier

in 5

8.2 naC 252 rear

aux 1

in 6 aux 2

supercap RC5 in

supercap

in 4

in 1 cdin 2

Inputs 1, 2 & 6

ch1

ch2

-ve

tuner

nc nc

in 3 tape

Inputs 3, 4 & 5

ch1 ch2

av

-ve

signal ground

ch1 (out)

ch2 (out)

in 6 (alternative)

Input 6

(alternative)

+ve ch2

8.3 naC 252 Connected to supercap

note: For best performance the Burndy and 5 pin DIN

cables should be run as close together as possible.

-ve

+ve

ch1

cd/RCA Phono

ch1(L)

ch2(R)

note: The NAC 252 AUX 2 input is provided with two

sockets. The lower socket, fitted on delivery with a blanking cover, is intended for use with a Naim Audio RCA Phono stage and incorporates an appropriate DC power supply. The two sockets must not be used simultaneously.

note: The RS232/comms interface is an optional

upgrade. It can be specified at time of order or fitted retrospectively. Contact your local representative or Naim Audio directly for further information.

aux 2/RCA Phono ch1(L) ch2(R)

RS232

interface

mains input and fuse

9 NAC 252/Supercap Specification

Input sensitivities: 75mV, 47kΩ overload margins: 40dB

(all inputs all audio frequencies)

main output Level: 0.775V, <50Ω Tape output Level: 75mV, 600Ω auxiliary Power outputs: For Naim phono stage. Dimensions (H x w x D): Both 87 x 432 x 314mm weight: NAC 252 - 7.0kg

Supercap - 11.6kg

mains supply (supercap): 100-120V or 220-240V, 50/60Hz

additional signal output

to mono or dual mono

power ampliers

cable direction marker

to stereo power

ampliers

Interconnect Cables

NAC 252 Burndy

240° 5 to 5 pin DIN

e7

NAC 282 Preamplifier

10 naC 282 Introduction and Installation

The naC 282 preamplifier does not incorporate an internal power supply but must be used in conjunction with either a naim power amplifier incorporating a preamplifier power output, or with an appropriate naim power supply. a separate naPsC supply that provides power to the display and control circuits is supplied. Diagrams 11.3 and 11.4 illustrate two naC 282 power supply options.

The preamplifier and power supply should be installed on a dedicated equipment stand intended for the purpose. Do not stand either directly on top of another item of equipment. Care should be taken to ensure that the preamplifier is level.

The preamplifier and any power supply should be installed in their final locations before connecting cables or switching on. ensure that the preamplifier volume is turned down before switching on.

The following section 10 paragraphs describe installation features and functions specific to the naC 282. operational features common to all preamplifiers and integrated amplifiers are described in section 28.

operational features common to all preamplifiers and integrated amplifiers are described in section 28

10.1 source Inputs and record outputs

The input selection buttons arranged along the upper bank select the source signal to be routed to the power amplifier and the loudspeakers. Below them, in the lower bank, are a corresponding array of buttons which select the signal to be routed to the preamplifier’s record outputs.

These separate source and record sections enable one source (a CD player, for example) to be listened to whilst the output from another (say, the tuner) is simultaneously selected for recording.

note: It is possible to lock the record controls and prevent

accidental de-selection during recording. Record-lock is switched on or off by depressing the source mono button four times within six seconds.

10.2 Input socket assignment

The NAC 282 has six DIN input sockets and two alternative pairs of RCA Phono sockets. The RCA Phono sockets can be assigned individually to the CD and AUX 2 input buttons in place of the DIN sockets.

11 naC 282 Controls and Connections

Input assignment setup is accessed through the NAC 282 program mode. To switch into (or exit from) program mode press and hold the prog key on the remote handset (in preamplifier mode). Program mode is indicated by a flashing indicator on the front panel volume control and the record selection indicators extinguishing.

note: If no function is operated within five minutes of

entering program mode the NAC 282 will return to normal mode automatically.

Once in program mode press and hold the remote handset 1 key to select or de-select the RCA Phono socket input for CD, and the remote handset 6 key to select or de-select the RCA Phono socket input for AUX 2. The corresponding front panel input buttons can similarly be used to select or de-select the RCA Phono socket inputs. The appropriate input button indicator will flash three times on selection of the RCA Phono option and once on selection of the DIN option.

To exit from program mode press and hold the prog key on the handset until the record select indicators are restored and the volume indicator stops flashing.

e8

11.1 naC 282 Front

volume

balance

source

bank

record

bank

mono

mute

source and record selection

NAC 282 Preamplifier

in 5

11.2 naC 282 rear

aux 1

in 6 aux 2

power supply/output option sockets

with link and blanking plugs tted

to NAPSC

RC5 in

in 1 cdin 2

Inputs 1, 2 & 6

ch1 ch2

-ve

tuner

nc nc

in 4

in 3

av

tape

Inputs 3, 4 & 5

ch1 ch2

-ve

signal

in 6 (alternative) cd/RCA

ground

Input 6

ch1 (out)

ch2 (out)

(alternative)

+ve ch2

+ve

ch1

-ve

note: The NAC 282 AUX 2 input is provided with two

sockets. The lower socket, fitted on delivery with a blanking cover, is intended for use with a Stageline or Prefix Phono stage and incorporates an appropriate DC power supply. The two sockets must not be used simultaneously.

note: The RS232/comms interface is an optional

upgrade. It can be specified at time of order or fitted retrospectively. Contact your local representative or Naim Audio directly for further information.

11.3 naC 282 Connected to supercap and naPsC

Phono

ch1(L)

ch2(R)

aux 2/RCA Phono ch1(L) ch2(R)

to power

amplier

with internal power supply

RS232 interface

mains input and fuse

cable direction marker

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

additional signal output

to mono or dual mono

power ampliers

to stereo power

ampliers

e9

NAC 282 Preamplifier

11.4 naC 282 Connected to Hi-Cap and naPsC

to stereo power ampliers

mains input and fuse

note: Alternative upgrade schemes and product

combinations may be feasible. Contact your local representative or Naim Audio directly for further information.

additional signal output

to mono or dual mono power

ampliers

cable direction marker

Interconnect Cables

240° 5 to 5 pin DIN

e10

12 naC 282 specification

Input sensitivities: 75mV, 47kΩ overload margins: 40dB

(all inputs all audio frequencies)

main output Level: 0.775V, <50Ω Tape output Level: 75mV, 600Ω auxiliary Power outputs: For Naim phono stage. Dimensions (H x w x D): 87 x 432 x 314mm weight: 7.0kg

NAC 202 Preamplifier

13 naC 202 Introduction and Installation

The naC 202 preamplifier does not incorporate an internal power supply but must be used in conjunction with either a naim power amplifier incorporating a preamplifier power output, or with an appropriate naim power supply. a separate naPsC supply that provides power to the display and control circuits is also available. Diagram 14.3 illustrates the naC 202 connected to a Hi-Cap power supply.

The preamplifier and any power supply should be installed on a dedicated equipment stand intended for the purpose. Do not stand either directly on top of another item of equipment. Care should be taken to ensure that the preamplifier is level.

The preamplifier and any power supply should be installed in their final locations before connecting cables or switching on. ensure that the preamplifier volume is turned down before switching on.

The following section 13 paragraphs describe installation features and functions specific to the naC 202. operational features common to all preamplifiers and integrated amplifiers are described in section 28.

operational features common to all preamplifiers and integrated amplifiers are described in section 28

13.1 Input sockets and assignment

The input selection buttons select the source input signal to be routed to the power amplifier and the loudspeakers.

The NAC 202 has six DIN input sockets and two alternative pairs of RCA Phono sockets. The RCA Phono sockets can be assigned individually to the CD and AUX 2 input buttons in place of the DIN sockets.

Input assignment setup is accessed through the NAC 202 program mode. To switch into (or exit from) program mode press and hold the prog key on the remote handset (in preamplifier mode). Program mode is indicated by a flashing indicator on the front panel volume control.

note: If no function is operated within five minutes of

entering program mode the NAC 202 will return to normal mode automatically.

Once in program mode press and hold the remote handset 1 button to select or de-select the RCA Phono socket input for CD, and the remote handset 6 button to

14 naC 202 Controls and Connections

select or de-select the RCA Phono socket input for AUX 2. The corresponding front panel input buttons can similarly be used to select or de-select the RCA Phono socket inputs. The appropriate input button indicator will flash three times on selection of the RCA Phono option and once on selection of the DIN option.

To exit from program mode press and hold the prog key on the remote until the volume indicator stops flashing.

13.2 record mute

In order to minimise power consumption and improve sound quality the NAC 202 record output circuit can be muted. To engage or disengage record mute press the front panel mon button followed by the front panel

mute button. The mute button indicator will illuminate

when record mute is engaged and extinguish when it is disengaged. Record mute can also be engaged and disengaged from the remote handset using the mon and

mute keys.

14.1 naC 202 Front

volume

mon

mute

source selection

e11

NAC 202 Preamplifier

signal

14.2 naC 202 rear

g’nd

in 6 (alternative)

power supply/output option sockets

with link and blanking plugs tted

to NAPSC

RC5 in

in 1 cdin 2

Inputs 1, 2 & 6

ch1

ch2

-ve

tuner

nc

in 4

in 3

av

tape

Inputs 3, 4 & 5

ch1

ch2

-ve

in 5 aux 1

ch1 (out)

ch2 (out)

in 6 aux 2

(alternative)

+ve ch2

Input 6

-ve

+ve ch1

note: The NAC 202 AUX 2 input is provided with two

sockets. The upper socket, fitted on delivery with a blanking cover, is intended for use with a Stageline or Prefix Phono stage and incorporates an appropriate DC power supply. The two sockets must not be used simultaneously.

note: The RS232/comms interface is an optional

upgrade. It can be specified at time of order or fitted retrospectively. Contact your local representative or Naim Audio directly for further information.

14.3 naC 202 Connected to Hi-Cap and naPsC

cd/RCA

Phono

ch1(L)

ch2(R)

aux 2/RCA Phono ch1(L) ch2(R)

to power

amplier

with internal power supply

RS232 interface

e12

mains input and fuse

cable direction marker

to stereo power ampliers

additional signal output

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

to mono or dual mono power

ampliers

15 naC 202 specification

Input sensitivities: 75mV, 47kΩ overload margins: 40dB

(all inputs all audio frequencies)

main output Level: 0.775V, <50Ω Tape output Level: 75mV, 600Ω auxiliary Power outputs: For Naim phono stage. Dimensions (H x w x D): 87 x 432 x 314mm weight: 7.0kg

NAC 152 XS Preamplifier

16 naC 152 Xs Introduction and Installation

The naC 152 Xs preamplifier does not incorporate an internal power supply but must be used in conjunction with either a naim power amplifier incorporating a preamplifier power output, or with an appropriate naim power supply. Diagram 17.3 illustrates the naC 152 Xs connected to a FlatCap Xs power supply.

The preamplifier and any power supply should be installed on a dedicated equipment stand intended for the purpose. Do not stand either preamplifier or power supply directly on top of another item of equipment. ensure that the preamplifier is level.

The preamplifier and any power supply should be installed in their final locations before connecting cables or switching on. ensure that the preamplifier volume is turned down before switching on.

The following section 16 paragraphs describe installation features and functions specific to the naC 152 Xs. operational features common to all preamplifiers and integrated amplifiers are described in section 28.

operational features common to all preamplifiers and integrated amplifiers are described in section 28

16.1 audio Inputs

The input selection buttons select the source input signal to be routed to the preamplifier outputs and the power amplifier.

The NAC 152 XS has six DIN input sockets and five pairs of RCA Phono sockets. The RCA Phono sockets are permanently connected in parallel with their respective DIN sockets. RCA Phono and DIN sockets for the same input should not be connected simultaneously.

note: The aux2 DIN input socket carries a power supply

output voltage appropriate for a Naim phono preamplifier.

A 3.5mm stereo Jack input socket suitable for an iPod (or alternative portable music player) is also provided on the NAC 152 XS front panel. This input is connected in parallel with the aux 1 DIN and RCA Phono sockets.

Insertion of a plug into the front panel socket will automatically switch the preamplifier to that input. Removal of the plug will return the amplifier to the previously selected input. If a different input is selected while a plug is inserted, removal of the plug will not cause the input to change.

16.2 audio outputs

The NAC 152 XS provides subwoofer and line level outputs, each via a pair of RCA Phono sockets.

The line level output simply reflects the selected input signal while the subwoofer output is a duplicate of the main preamplifier output (i.e it is affected by the preamplifier volume control).

16.3 Power supply upgrades

The NAC 152 XS can be powered by a Naim power amplifier incorporating a preamplifier power supply or its performance upgraded through the connection of one or more external power supplies. Power supply upgrades can be carried out in stages:

stage 1 is to connect an i-supply, Flatcap, Hi-Cap or supercap power supply to the NAC 152 XS upgrade 1

socket. The link/blanking plug inserted in the Link 1 socket must be removed.

stage 2 is to connect a Flatcap, Hi-Cap or supercap

power supply to the NAC 152 XS upgrade 2 socket. The link plug fitted to this socket must be removed. With a second power supply added, the NAC 152 XS no longer requires a power supply from the power amplifier, which should now be connected via the Stage 2 power supply.

Diagrams illustrating both power supply upgrade stages are shown in Section 17.

note: Link plugs must only be inserted in the sockets from

which they were removed and unused power supply sockets must not be used for any other purpose. Incorrect use of link plugs and power supply sockets risks significant damage to the power supply or preamplifier.

note: A wide variety of different power supply schemes

are potentially possible for the NAC 152 XS, including the use of one Flatcap for both upgrade stages. Your local retailer will be able to advise on the best scheme for your particular system.

note: The NAPSC power supply cannot be used with the

NAC 152 XS.

iPod is a trademark of Apple Inc., registered in the U.S. and other countries

e13

NAC 152 XS Preamplifier

17 naC 152 Xs Controls and Connections

17.1 naC 152 Xs Front

volume

17.2 naC 152 Xs rear

cd in

tuner in

phono

ch1 ch2

phono

cd intuner in hdd

cd, tun, hdd, av,

and aux inputs

-ve

hdd in phono

in

alternative aux 2

+ve

nc

ch2

nc

av in

phono

av

in

aux 1

input

aux 1 in

phono

to power amplier with internal power supply

aux 2

in

+ve

ch1

-ve

signal ground

aux 2 in & power out

(cover tted)

front panel

input socket

to power amplier with

internal power supply

power supply upgrade

link plugs tted

note: The NAC 152 XS AUX 2 input is provided with two

sockets. The right hand socket (fitted on delivery with a blanking cover), is intended for use with a Stageline or SuperLine phono stage and incorporates an appropriate DC power supply. The two sockets must not be used simultaneously.

mute source selection

line output

subwoofer output

remote in

RS232 interface

e14

note: The NAC 152 XS features various technologies to

reduce microphonic effects. Some movement of the board and sockets when connecting and disconnecting cables is normal.

note: The RS232/comms interface is an optional

upgrade. It can be specified at time of order or fitted retrospectively. Contact your local representative or Naim Audio directly for further information.

cable direction marker

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

NAC 152 XS Preamplifier

17.3 naC 152 Xs Connected to FlatCap Xs Power supply (stage 1 upgrade)

to power amplier with

internal power supply

power switch

mains input and fuse

for preamplier stage 2

upgrade, CD5 XS, Headline

or phono stage. Additional

interconnects required.

cable direction marker

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

e15

NAC 152 XS Preamplifier

17.4 naC 152 Xs Connected to Hi-Cap and FlatCap Xs Power supplies (stage 2 upgrade)

to stereo power ampliers

mains input and fuse

power switch

additional signal output

mains input and fuse

to mono or dual mono power

ampliers

18 naC 152 Xs specification

Input sensitivities: 130mV, 47kΩ overload margins: 35dB

(all inputs all audio frequencies)

main output Level: 0.775V, <50Ω Line output Level: 130mV, 600Ω auxiliary Power outputs: For Naim phono stage. Dimensions (H x w x D): 70 x 432 x 301mm weight: 3.9kg

for CD5 XS, Headline or

phono stage. Additional

interconnects required.

cable direction marker

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

e16

SUPERNAIT Integrated Amplifier

19 suPernaIT Introduction and Installation

The supernait should be installed on a dedicated equipment stand intended for the purpose. Do not stand it directly on top of another item of equipment. Care should be taken to ensure that it is level. The amplifier should be installed in its final location before connecting cables or switching on. ensure that the volume is turned down before switching on.

a variety of power supply upgrade, alternative preamplifier and alternative or additional power amplifier options are possible for the supernait. Diagrams illustrating the connection of some of these are shown in section 20.

The following section 19 paragraphs describe installation features and functions specific to the supernait. operational features common to all preamplifiers and integrated amplifiers are described in section 28.

operational features common to all preamplifiers and integrated amplifiers are described in section 28

19.1 source Input selection and assignment

The input selection buttons arranged along the upper bank select the source signal to be routed to the power amplifier and the loudspeakers. The six buttons are labelled

cd, tuner, tape, av, aux1 and aux2.

Each input button may be assigned to analogue inputs (via DIN, RCA Phono or 3.5mm jack sockets), or to digital inputs via RCA Phono coaxial, “Toslink” or “mini-toslink” optical sockets. The default settings and the assignment setup procedure are detailed in Sections 19.2 and 19.3 respectively.

19.1.1 analogue Inputs

The first four selection buttons (cd, tuner, tape and av) can each be assigned to both a DIN input socket and a pair of RCA Phono input sockets on the rear panel. The DIN and Phono sockets for each input are internally wired in parallel and should not be connected simultaneously.

The aux1 and aux2 selection buttons can each be assigned to a pair of RCA Phono input sockets and a DIN input socket on the rear panel respectively.

note: The aux2 DIN input socket carries a power supply

output voltage appropriate for a Naim phono preamplifier.

19.1.2 Digital Inputs

The Supernait additionally provides four S/PDIF digital input sockets - 2 RCA Phono coaxial and 2 “Toslink” optical - on the rear panel. Any input selection button can be assigned to one of these sockets.

note: The digital inputs support stereo PCM audio only. If

the digital signal contains anything other than stereo PCM audio (Dolby or DTS encoded programme material for example) all outputs will be muted.

19.1.3 Front Panel Combined Input

An auxiliary front panel input socket is also provided. This socket is a 3.5mm analogue “jack” input combined with a digital “mini-Toslink” optical socket. The analogue input is wired internally in parallel with the rear panel aux1 input and the two must not be connected simultaneously.

The front panel input (analogue or digital) is automatically selected (and the aux1 selection button automatically assigned to it), whenever a plug is inserted in the socket.

note: The Supernait is able to differentiate a digital source

from an analogue one at the front panel input if the digital source is working when the plug is inserted.

Input selection will revert to that previously selected when the front panel input plug is removed.

19.2 Default Input selection Button and Input socket assignment

Input selection Input socket Input socket Button assignment Type

cd Analogue Input 1 DIN/RCA Phono tuner

Analogue Input 2 DIN/RCA Phono

tape

Digital Input 1 RCA Phono Coax

av

Analogue Input 4 DIN/RCA Phono

aux1

Digital Input 2 “Toslink” Optical

(See Note)

aux2

Analogue Input 6 DIN (with Naim phono stage power supply)

note: Any plug inserted into the front panel socket will automatically provoke selection of

this input (digital or analogue) and will automatically assign it to the aux1 selection button.

e17

SUPERNAIT Integrated Amplifier

19.3 Digital Input assignment

The default digital input socket assignment illustrated in Table 19.2 may be changed if desired. Each selection button may be assigned to any one of the four rear panel digital input sockets.

Input assignment setup is accessed through the Supernait

program mode. To switch into (or exit from) program mode

press and hold the prog key on the remote handset (in preamplifier mode). Program mode is indicated by a flashing indicator on the front panel volume control.

note: If no function is operated within five minutes of

entering program mode the Supernait will return to normal mode automatically.

Once in program mode, to assign a digital input socket, first press the required input selection button. Then, press one of the record selection buttons to assign the desired digital input. The record selection buttons assign digital inputs as set out in the following table:

record select Button Digital Input selection

cd (assigns) digital 1 (coaxial) tuner (assigns) digital 2 (optical) tape (assigns) digital 3 (coaxial) av (assigns) digital 4 (optical)

As an example, to assign the tuner input selection button to digital input 4 proceed as follows.

i) Enter program mode. ii) Press the tuner input selection button. iii) Press the av record selection button (which will illuminate). iv) Exit program mode.

To return an input selection button to its default analogue input, repeat the assignment procedure.

For example, to return the tuner input selection button to its analogue input socket.

i) Enter program mode. ii) Press the tuner input selection button. iii) Press the av (illuminated) record selection button (which will extinguish). iv) Exit program mode.

19.4 record outputs

The selection buttons arranged along the lower bank select the source signal to be routed to the Supernait’s record outputs.

These separate source and record sections enable one source (a CD player, for example) to be listened to whilst the output from another (say, the tuner) is simultaneously selected for recording.

note: Simultaneous and independent listen and record is

not possible with two digital sources.

19.5 speaker outputs

A stereo set of speaker connection sockets is provided on the rear panel. Custom Naim Audio loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used. Naim Audio speaker cable will provide the best results; however, a wide range of speaker cable types can be used without risk of damage to the amplifier.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

19.6 Headphone output

A 3.5mm headphone socket is provided on the front panel. Insertion of a headphone plug will automatically switch on the headphone amplifier and mute the speaker outputs unless the Supernait is set up not to mute.

To prevent (or re-enable) automatic speaker muting, enter program mode and press the record aux2 selection button.

19.7 auxiliary Inputs and outputs

A bi-amp out (preamplifier output) DIN socket is provided on the rear panel to enable an external upgrade power amplifier or second (bi-amp) power amplifier to be used.

note: Bi-amp out is the preferred socket for all external

power amplifier connections.

Also provided are separate pre-amp out and power-amp

in sockets. In normal use these sockets are connected by

an external link plug. The link plug should be removed only if a power supply upgrade is to be used or an alternative preamplifier is to use the Supernait power amplifier section. Diagrams 20.3 to 20.5 illustrate use of these sockets.

When an external preamplifier is connected to the Supernait power-amp in socket, a fault will initially be indicated by the source mute button flashing. To clear the fault, press and hold the flashing source mute button. This will un-mute the power amplifier and turn off the display and volume and balance indicators.

The Supernait provides an unfiltered analogue stereo

subwoofer output via a pair of RCA Phono sockets. note: The subwoofer output is a duplicate of the

preamplifier output. No low-pass filtering is applied.

19.8 Power supply upgrades

The Supernait preamplifier section can be upgraded through the connection of an external Flatcap, Hi-Cap or Supercap power supply. Diagrams illustrating power supply upgrades are shown in the following section. The Supernait

e18

SUPERNAIT Integrated Amplifier

and external power supply must be switched off when connections are made. Switch on the external power supply and then the Supernait when all connections are complete.

19.9 General Connections notes

The Supernait negative input and output connections for each channel are common. The mains earth (ground)

20 suPernaIT Controls and Connections

20.1 suPernaIT Front

volume

balance

should always be connected regardless of what other equipment is used in conjunction with the amplifier. The mains earth 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.

source and record selection

source

bank

record

bank

mute

combined

analogue and

digital input

headphone output

20.2 suPernaIT rear

power

ch1 ch2

ch2

mains

input

and fuse

cd and tuner

Inputs

-ve

pre-amp out for

bi-amp

ch1

-ve

nc

RS232

interface

nc nc

speaker

tape and av

Inputs

ch1

ch2

left

-ve

ch1 (out)

ch2 (out)

right

speaker

aux 2 input

+ve

ch2

-ve

+ve

ch1

digital inputs

outputs

RC5 in/out

signal ground

power amp in and

preamp out. Link

plug tted.

aux 2 in & power out

av in & out

tape in & out

note: The RS232 interface is an optional upgrade. It can

be specified at time of order or fitted retrospectively. Contact your local representative or Naim Audio directly for further information.

note: The link plug should be removed only if a power

supply upgrade is to be used or an alternative preamplifier is to use the Supernait power amplifier section. It should remain fitted in all other circumstances.

analogue Phono RCA inputs

tunertapeavaux1tapesubbi-amp1 2 3 4

cd

tuner incd in

e19

SUPERNAIT Integrated Amplifier

20.3 suPernaIT Connected to Hi-Cap Power supply

power

mains

input

and fuse

mains input and fuse

20.4 suPernaIT Connected to naP 200 Power amplifier

cable direction marker

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

e20

power

mains

input

and fuse

mains input and fuse

cable direction marker

Interconnect Cables

4 to 4 pin DIN

SUPERNAIT Integrated Amplifier

20.5 suPernaIT Connected to Hi-Cap Power supply and naP 200 Power amplifier

power

mains

input

and fuse

mains input and fuse

cable direction marker

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

mains input and fuse

21 suPernaIT specification

Input sensitivities: 75mV, 47kΩ overload margins: 40dB

(all inputs all audio frequencies)

Preamp output Level: 0.775V, <50Ω Tape output Level: 75mV, 600Ω Power output: Continuous 80 Watts per

channel into 8 Ohms

auxiliary Power outputs: For Naim phono stage Quiescent Consumption: Dimensions (H x w x D): 87 x 432 x 314mm weight: 12.8kg mains supply: 100-120V or 220-240V, 50/60Hz

10VA

e21

NAIT XS Integrated Amplifier

22 naIT Xs Introduction, Installation and Connections

The naIT Xs should be installed on a dedicated equipment stand intended for the purpose. Do not stand it directly on top of another item of equipment. Care should be taken to ensure that it is level. The amplifier should be installed in its final location before connecting cables or switching on. ensure that the volume is turned down before switching on.

a variety of power supply upgrade, alternative preamplifier and alternative or additional power amplifier options are possible for the naIT Xs. Diagrams illustrating the connection of some of these are shown in section 23. Contact your local retailer or distributor for advice on further alternative connection schemes.

The NAIT XS incorporates an AV Bypass switch on its rear panel. The switch should only be set to “On” if the amplifier is to be used in conjunction with an AV processor in a home theatre system. In all other installations the AV Bypass switch should be set to “Off”. Speaker and/or amplifier damage may occur if a signal is inadvertently connected to the NAIT XS av input while the AV Bypass switch is “On”.

operational features common to all preamplifiers and integrated amplifiers are described in section 28.

operational features common to all preamplifiers and integrated amplifiers are described in section 28

22.1 mains Power Connection

Connect the NAIT XS to a mains power socket using either the mains cable supplied or a Naim Power-Line.

22.2 signal Inputs

The NAIT XS front panel input buttons select the source input signal to be routed to the integral power amplifier and the loudspeakers. The six buttons are labelled cd,

tuner, hdd, av, aux 1 and aux 2.

The cd, tuner, hdd and av input buttons select parallel DIN and RCA phono input sockets on the rear panel.

note: The hdd and av sockets carry both inputs and

outputs. See Section 22.4 for more information.

The aux 1 input button corresponds to a pair of RCA phono sockets on the rear panel and a parallel 3.5mm stereo jack socket on the front panel. Insertion of a plug into the front panel aux 1 socket will automatically switch the amplifier to that input. Removal of the plug will return the amplifier to the previously selected input. If a different input is selected while a plug is inserted removal of the plug will not cause the input to change.

The aux 2 input button corresponds to a DIN input socket on the rear panel. The aux 2 DIN socket also carries a power supply output suitable to power a Naim or

superLine phono preamplifier.

note: For optimum sound quality DIN sockets should be

used in preference to RCA phono sockets.

note: Where an input has DIN or Phono socket options only

one should be connected at any one time.

Always use high quality interconnect cables to connect sources to inputs. The Naim Hi-Line will produce the best results.

stageline

22.3 speaker outputs

A set of stereo speaker connection sockets is provided on the rear panel. Custom Naim loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used. Naim speaker cable will provide the best results, however, a wide range of speaker cable types can be used without risk of damage to the amplifier.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

22.4 AV and hdd Inputs and Outputs

The NAIT XS av and hdd inputs have associated outputs that enable the selected input signal to be routed externally; to an audio recording component for example.

note: The av or hdd outputs will be muted if their

corresponding inputs are selected.

22.5 AV Bypass

The NAIT XS can be integrated within a multi-channel home theatre system, driving the front left and right channel speakers, by engaging its AV Bypass mode. AV Bypass mode enables a home theatre processor to take over volume control of signals connected to the NAIT XS av input. It is engaged using the switch on the rear panel. The NAIT XS volume control indicator will extinguish when AV Bypass mode is engaged and the av input is selected. The remote handset volume control will also be disabled.

e22

NAIT XS Integrated Amplifier

note: The AV Bypass feature must be used with care. It

bypasses the NAIT XS volume control leaving any signal connected to the av input to be passed to the speakers at full volume.

note: The mute function is disabled when AV Bypass is

engaged.

22.6 auxiliary Inputs and outputs

The NAIT XS incorporates pre-amp out and power-amp in sockets on its rear panel. In normal use these sockets are connected by a link plug. The link plug should be removed only in the following circumstances:

• A power supply upgrade is to be used.

• An alternative preamplifier is to use the NAIT XS power

amplifier section.

• An alternative power amplifier is to use the NAIT XS

preamplifier section. Diagrams 23.3 and 23.4 illustrate use of these sockets. When an external preamplifier is connected to the NAIT XS

power-amp in socket, a fault will initially be indicated by

the mute button flashing. To clear the fault, press and hold the flashing mute button. This will un-mute the amplifier and turn off the display and volume indicator.

The NAIT XS provides an unfiltered analogue stereo

subwoofer output via a pair of RCA phono sockets. note: The subwoofer output is a duplicate of the

preamplifier output. No low-pass filtering is applied.

22.7 Power supply upgrades

The NAIT XS preamplifier section can be upgraded through the connection of an external Flatcap, Hi-Cap or Supercap power supply. Diagrams illustrating power supply upgrades are shown in Section 23. The NAIT XS and external power supply must be switched off when connections are made. Switch on the external power supply first followed by the NAIT XS when all connections are complete.

22.8 General Connections notes

The NAIT XS negative input and output connections for each channel are common. The mains earth (ground) should always be connected regardless of what other equipment is used in conjunction with the amplifier. The mains earth 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.

A signal ground connection is fitted to the NAIT XS rear panel. This is intended to be used to connect a turntable pick-up arm signal earth only.

23 naIT Xs Controls and Connections

23.1 naIT Xs Front

volume

aux 1 input socket

source selection

mute

e23

NAIT XS Integrated Amplifier

23.2 naIT Xs rear

remote in

subwoofer

out

aux 1

input

av

in

hdd

in

tuner

in

cd

in

power

mains

and fuse

cd and tuner

Inputs

ch1 ch2

input

-ve

RS232

interface

nc nc

left

speaker

hdd and av

Inputs/outputs

ch1

ch2

-ve

ch1 (out)

ch2 (out)

right

speaker

aux 2 input

+ve

ch2

-ve

signal

ground

+ve

ch1

power amp in

AV

bypass

switch

and preamp out. Link plug

note: The RS232 interface is an optional upgrade. It can be

specified at time of order or fitted retrospectively. Contact your local representative or Naim directly for further information.

note: The link plug should be removed only if a

power supply upgrade is to be used, an alternative preamplifier is to use the NAIT XS power amplifier section,

note: The Nait XS features various technologies to reduce

microphonic effects. Some movement of the board and sockets when connecting and disconnecting cables is

or an alternative power amplifier is to use the NAIT XS preamplifier section. It should remain fitted in all other circumstances.

normal.

23.3 naIT Xs Connected to FlatCap Xs Power supply

tted.

aux 2 in & power out

av in & out

hdd in & out

tuner incd in

e24

power

mains input and fuse

note: The NAIT XS should remain connected

to mains power at all times.

cable direction marker

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

NAIT XS Integrated Amplifier

23.4 naIT Xs Connected to Hi-Cap Power supply and naP 200 Power amplifier

power

mains input and fuse

note: The NAIT XS should remain connected to

mains power at all times.

cable direction marker

Interconnect Cables

4 to 4 pin DIN

240° 5 to 5 pin DIN

24 naIT Xs specification

Input sensitivities: 130mV, 47kΩ overload margins: 34dB

(all inputs all audio frequencies)

Preamp output Level: 0.775V, <50Ω Line output Level: 130mV, 600Ω Power output: Continuous 60 Watts per

channel into 8 Ohms

auxiliary Power outputs: For Naim phono stage Quiescent Consumption: Dimensions (H x w x D): 70 x 432 x 301mm weight: 8.6kg mains supply: 100-120V or 220-240V, 50/60Hz

20VA

e25

NAIT 5i Integrated Amplifier

25 naIT 5i Introduction and Installation

The nait 5i should be installed on a dedicated equipment stand intended for the purpose. Do not stand it directly on top of another item of equipment. Care should be taken to ensure that it is level. The amplifier should be installed in its final location before connecting cables or switching on. ensure that the volume is turned down before switching on.

The following section 25 paragraphs describe installation features and functions specific to the nait 5i. operational features common to all preamplifiers and integrated amplifiers are described in section 28.

25.1 Inputs

The front panel input selector buttons select the source input signal to be routed to the power amplifier and the loudspeakers. The four buttons are labelled cd, tuner, hdd and av. Each input button corresponds to a pair of rear panel RCA Phono input sockets. The cd and tuner inputs are additionally provided with alternative DIN sockets. These should be used in preference to the RCA Phono sockets if practical. Do not connect both the DIN and RCA Phono sockets of one input simultaneously.

A 3.5mm stereo Jack input socket suitable for an iPod* (or alternative portable music player) on is also provided on the Nait 5i front panel.

Insertion of a plug into the front panel socket will automatically switch the preamplifier to that input. Removal of the plug will return the amplifier to the previously selected input.

note: The mute function will not operate when the front

panl input is in use.

25.2 outputs

A stereo set of speaker connection sockets is provided on the rear panel. The sockets can accept standard 4mm plugs, but to comply with European legislation the Naim connectors supplied should be used. Naim Audio speaker cable will provide the best results; however, a wide range of speaker cable types can be used without risk of damage to the amplifier.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

The hdd output always carries the selected input signal.

operational features common to all preamplifiers and integrated amplifiers are described in section 28

26 naIT 5i Controls and Connections

26.1 naIT 5i Front

volume

front panel

input socket

source selection

e26

NAIT 5i Integrated Amplifier

26.2 naIT 5i rear

power

note: The Nait 5i features various technologies to reduce

microphonic effects. Some movement of the board and sockets when connecting and disconnecting cables is normal.

mains

input

and fuse

left

speaker

right

speaker

27 naIT 5i specification

Input sensitivities: 225mV, 20kΩ overload margins: 35dB

(all inputs all audio frequencies)

Tape output Level: 225mV, 100Ω Power output: Continuous 50 Watts per

channel into 8 Ohms

Quiescent Consumption: Dimensions (H x w x D): 70 x 432 x 301mm weight: 6.4kg mains supply: 100-120V or 220-240V, 50/60Hz

10VA

av in

hdd in

hdd out

tuner input (RCA Phono)

tuner input (DIN)

CD input (RCA Phono)

cd and tuner

ch1 ch2

CD input (DIN)

Inputs

nc nc

-ve

e27

Preamplifier and Integrated Amplifier Operation

28 Preamplifier and Integrated amplifier operation

many operational and control features of naim preamplifiers and integrated amplifiers are common to all and are based on a similar user interface. This section of the manual describes those features and the user interface, drawing attention to differences between products where they occur. Table 28.10 sets out some variations in user interface between products.

Front panel controls are duplicated on the remote control handset which may also provide some extra functions. see sections 29 and 30 for more information.

For the purposes of brevity the term preamplifier in the following paragraphs can be taken also to mean integrated amplifier.

28.1 automatic Input switching

With automatic Input switching engaged the appropriate source input will be selected as soon as any handset function for that (Naim) source component is operated. For example, if the tuner input is selected and the cd play key is pressed on the handset, the preamplifier will automatically switch to the cd input. Automatic Input Switching can be programmed to operate on any combination of the cd, av, hdd and tuner input buttons (and sockets to which they are assigned).

To enable Automatic Input Switching, first switch the preamplifier into program mode by pressing and holding the handset prog key (with the handset in preamplifier mode). The front panel source mono/mon button (NAC 202 mon and NAC 152 XS mute buttons, Supernait record

mute button, Nait XS mute button and Nait 5i hdd button)

will illuminate if automatic switching is already enabled. If it is not enabled it can be switched on by pressing the same button.

With automatic switching enabled, pressing the button again will reveal the inputs selected for auto switching by their indicators illuminating for a short time. Repeated operation of the button will sequentially select through each possible combination of cd, av, hdd, and tuner inputs and auto switching disabled (all indicators off). When the desired inputs selected for auto switching are indicated, stop pressing the button.

Automatic Input Switching only becomes operational on exit from program mode by pressing and holding the handset prog key.

note: The preamplifier will leave program mode

automatically if no control commands are received for five minutes.

note: In a few cases some further equipment configuration

may be required for auto switching to operate correctly. Please contact your retailer or local distributor for advice.

28.2 AV Integration (Unity Gain)

unity Gain enables an audio-visual processor to be

integrated such that its volume control takes over command of signals connected to selected preamplifier inputs. On the NAC 552 Unity Gain may be selected on DIN input sockets 4 and 5. On all other preamplifiers it may be selected on only the av input.

To select Unity Gain, first switch the preamplifier into program mode by pressing and holding the handset prog key (with the handset in preamplifier mode). The front panel source mute button (NAC 202 mute button, NAC 152 XS and Nait 5i av button) will illuminate if Unity Gain is selected. If it is not enabled it can be switched on by pressing the same button twice.

note: Unity Gain (AV Bypass) on the Nait XS is not engaged

in program mode but via a rear panel switch.

With Unity Gain enabled on the NAC 552, pressing the

source mute button again will reveal the inputs selected

by their indicators illuminating for a short time. Repeated operation of the button will sequentially select each combination of the available inputs, and Unity Gain disabled. When the desired inputs are indicated, stop pressing the button. The selected inputs will then be enabled for Unity Gain. The handset can also be used to select Unity Gain. See table 28.10.

Unity Gain only becomes operational on exit from program mode by pressing and holding the handset prog key.

note: The preamplifier will leave program mode

automatically if no control commands are receved for five minutes.

e28

Preamplifier and Integrated Amplifier Operation

note: The Unity Gain feature must be used with care. It

effectively by-passes the preamplifier volume and balance controls leaving any signal connected to a Unity Gain input to be passed to the power amplifier and speakers at full volume. In order to reduce the potential for inadvertent mishap, any subsequent modifications to input assignment will automatically disable previously set up Unity Gain inputs. Additionally, if an input is selected which has Unity Gain enabled, the preamplifier volume and balance handset functions will be disabled and their indicators will turn off. This will be flagged by the volume or balance indicators flashing if either handset function is operated.

28.3 Handset Volume and Balance Control

The remote handset volume and balance keys provide some alternative control characteristics. A quick press and release of a key will adjust by a preset “nudge”. A quick press and release of a key followed by press and hold will cause continual slow adjustment. Simple press and hold will cause continual fast adjustment.

note: The NAC 152 XS, Nait XS and Nait 5i do not

incorporate any facility for channel balance control.

28.4 mute, mono and mon

Mute silences the output signal and can be selected by pressing the front panel mute button. On preamplifiers equipped with separate source and record sections Mute can be selected independently for source and record. Mute can also be selected from the handset.

note: The Nait 5i does not incorporate any front panel

mute facility.

Some preamplifiers include a mon (mono) function that sums the left and right channels. Mono can be selected by pressing the front panel mon (NAC 552 mono) button. On preamplifiers equipped with separate source and record sections mono can be selected independently for source and record. Mono can also be selected from the handset.

note: The NAC 202, NAC 152 XS, Supernait, Nait XS and

Nait 5i do not incorporate any mono facility.

The NAC 202 incorporates a mon (“tape monitor”) function. Pressing the mon button routes the tape, av or

aux 1 input signals to the preamplifier output while leaving

the input selection routed to the tape, av and aux 1 outputs. The mon function can also be selected from the handset.

note: Only the tape, av and aux 1 inputs (those that

incorporate outputs) can be selected when mon is engaged. However, if one of these inputs carries the source signal, that input will be unavailable for monitoring.

note: As delivered the NAC 202 record mute function is

engaged. It can be disengaged by pressing the mute button while mon is engaged. See Section 13.2

note: The NAC 152 XS, Nait XS and Nait 5i do not

incorporate any front panel tape monitor facility.

28.5 Display

The preamplifier front panel button illumination can be switched off by pressing the remote handset (in preamplifier mode) disp function. Any subsequent handset or front panel operation will temporarily restore the display. A second operation of the disp function will restore the display.

28.6 switch-on

After switch-on, via the power amplifier or power supply

power button, the preamplifier will remain muted for 30

seconds while control systems and circuits stabilise. On preamplifiers equipped with separate source and record sections, only the source side will un-mute automatically leaving the record side muted.

28.7 remote Control

The remote handset supplied with the preamplifier duplicates all configuration and control functions. See Sections 29 and 30 for more information.

28.8 Defaults

To restore all programmable settings to the factory defaults press and hold the remote handset disp key while the preamplifier is in program mode. The preamplifier will exit from program mode following this operation.

e29

Preamplifier and Integrated Amplifier Operation

28.9 Fault Conditions

Some amplifiers will indicate problems by flashing front panel button indicators. The following diagram tabulates the fault indication for each product.

amplifier Power supply or over Current over Temperature Link Plug Fault Fault Fault Flashing Button Flashing Button Flashing Button

naC 252 source mute N/A N/A

NAC 282 source mute N/A N/A

NAC 202 mute N/A N/A

NAC 152 XS mute N/A N/A

Supernait source mute record mute N/A

Nait XS mute tuner N/A

nait 5i N/A tuner cd

28.10 Interface Function Buttons and Keys

Amplifier Program Auto Input AV Integration Restore mode switching (unity Gain) Defaults

naC 552 hold pre N/A N/A N/A handset key (R-com)

hold prog pre 4 mon pre 4 mute hold disp handset key(s) (NARCOM 4) source mono source mute front panel

naC 252 hold prog pre 4 mon pre 4 mute hold disp handset key(s) (NARCOM 4)

source mon source mute front panel button

naC 282 hold prog pre 4 mon pre 4 mute hold disp handset key(s) (NARCOM 4)

source mon source mute front panel button

naC 202 hold prog pre 4 mon pre 4 mute hold disp handset key(s) (NARCOM 4)

mon mute front panel button

naC 152 Xs hold prog pre 4 mute pre 4 av hold disp handset key(s) (NARCOM 4)

mute av front panel button

supernait hold prog rec 4 mute pre 4 mute hold disp handset key(s) (NARCOM 4)

record mute source mute front panel button

nait Xs hold prog pre 4 mute rear panel hold disp handset key(s) (NARCOM 4)

mute switch front panel button

nait 5i hold prog pre 4 3 pre 4 4 hold disp handset key(s) (NARCOM 4)

hdd av front panel button

e30

note: The handset must be in preamplifier mode to select

program mode or to restore defaults

note: The 4 symbol means one key followed by another.

R-com Remote Handset

play

stop

vol +

pause

vol -

mute

open

tun

disp

pre

29 r-com remote Handset

The r-com remote handset is supplied with the naC 552 and CD555 and can be purchased as an accessory. It offers quick and intuitive control of the most often used functions of CD players, preamplifiers, integrated amplifiers and tuners.

To fit batteries, remove the bottom end cover using the tool provided and insert the batteries into the body taking care with their orientation. replace the end cover. remove the batteries if the r-com is to be packed and shipped.

29.1 using r-com

R-com keys primarily provide control of the functions most often used on CD players, preamplifiers, integrated amplifiers and tuners. In order to extend battery life, R-com will enter a “sleep” mode when unused. It will “wake” on being touched.

R-com has three operational modes - CD Player mode, Preamplifier/Integrated amplifier mode and Tuner mode. Its default mode is CD player. When awake in CD Player mode, all R-com keys will illuminate green. To switch the R-com into Preamplifier/Integrated amplifier mode or Tuner mode press the pre or tun keys respectively. The pre or tun key will then illuminate white. To switch R-com back into CD player mode either press the pre or tun key again.

In default mode the R-com keys have the following functions:

disp:

Scrolls through the display options of track, time

and display off.

Opens the door on the CD555.

open: stop: Stops CD replay. play: Begins CD replay. prev: Selects the previous track or index point. next: Selects the next track or index point. vol +: Increases the preamplifier/integrated amplifier

vol –:

mute:

volume.

Decreases the preamplifier/integrated amplifier

volume.

Reduces the volume to zero. A second press

restores the volume.

pause: Pauses CD replay. A second press restores play.

In Preamplifier/Integrated amplifier mode (press pre key), the following keys will change function:

disp:

Switches the preamplifier/integrated amplifier front

panel button indicators & knob indicators off and on.

prev: Selects the previous source input. next: Selects the next source input. note: Preamplifier or integrated amplifier program mode

can be selected from the R-com by pressing and holding the pre key. Program mode functions can then be accessed from the equipment front panel.

In Tuner mode (press tun key) the following keys will change function:

disp:

Switches the tuner display and front panel button

indicators off and on.

Selects the tuner “down” function.

prev: next: Selects the tuner “up” function. note: Tuner modes can be selected from the R-com by an

extended press of the tun key.

29.2 r-com Keys

e31

NARCOM 4 Remote Handset

30 narCom 4 remote Handset

The narCom 4 remote handset is supplied with the naC 552, naC 252, naC 282, naC 202, naC 152 Xs, supernait, nait Xs and nait 5i. It is a multi-functional remote control handset designed to be used with naim audio CD players, integrated amplifiers, preamplifiers, preset tuners and subwoofers.

To fit batteries, remove the battery cover and insert the batteries into the body taking care with their orientation. replace the battery cover.

30.1 using narCom

Operation of the NARCOM 4 handset is based around three types of keys: and

soft Keys.

system Component Keys keys switch the operation of

the

soft Keys into modes appropriate to each system

component (CD player, preamplifier, etc.).

Global Keys operate specific component functions

regardless of the available at all times.

Preamplifier and Integrated Amplifier Global Keys operate as follows:

vol (

5 & 6) Adjusts the preamplifier volume and the

mute Reduces the preamplifier volume to zero. A

bal (3 & 4) Adjusts the channel balance. Some

mon

Enables the output of a tape recorder to

Preamplifier and Integrated Amplifier follows:

disp Switches the front panel button indicators off

and on.

prog Press and hold to switch the preamplifier or

integrated amplifier into program mode.

numeric Enables direct selection of source inputs.

system Component Keys, Global Keys

system Component Key setting and are

volume control position.

second press restores the volume.

Naim amplifiers have control of channel balance available only from the remote handset. On these products the balance will automatically centre as it reaches the mid point. Centring is indicated by a flashing volume control indicator. To resume adjustment once the balance has centred, the bal key must be released and repressed.

be heard while recording. The source to be recorded is chosen by the input selection buttons in the normal way. A second operation of the mon key restores normal operation. Mon alternatively operates the mono function on appropriately equipped preamplifiers.

soft Keys operate as

30.2 narCom 4 Keys

Disp Key (Soft)

Numeric keys (Soft)

System Component Keys

Global Keys (CD)

V olume and mute keys

Prog Key (Soft)

e32

NAP 500 Power Amplifier

31 Installation and operation

The naP 500 and naP 500Ps should be installed on a dedicated equipment stand intended for the purpose and should be in their final location before connecting cables or switching on. switch on the source and preamplifier components, with the volume turned down, before switching on the naP 500. The naP 500 power button is located on the front panel of the naP 500Ps Power supply.

Care should be taken when siting the naP 500 to ensure that the top and bottom ventilation grids are not blocked.

The naP 500 and naP 500Ps are very heavy and care should be taken when lifting or moving them. make sure that the surface they are to be placed on can support the full weight.

31.1 General Connections notes

The negative input and output connections for each channel are common. The mains earth (ground) should always be connected regardless of what other equipment is used in conjunction with Naim power 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.

note: Each channel of the NAP 500 is a “bridged”

amplifier, so none of the speaker outlet sockets (+ or -) is at earth potential. Avoid connecting mains powered equipment such as electrostatic speakers, sub-woofers and headphone energisers that do not have a floating earth. No plug which is connected directly or indirectly to earth potential should be attached to any speaker outlet (+ or -).

31.2 Protection notes

In the NAP 500 the fan speed is increased in response to an increase in amplifier dissipation. If the amplifier reaches 70°C due to prolonged running at high level or to airflow being blocked, the output will be interrupted and the fan will run at full speed until it has cooled down. This may take a few minutes.

It is not necessary to switch the amplifier off, but it may be advisable to mute the preamplifier or turn the volume down to avoid surprises when it comes back on.

oPeraTIon oF THe amPLIFIer’s THermaL ProTeCTIon

SUGGESTS PROLONGED USE AT TOO HIGH A VOLUME LEVEL.

Your LouDsPeaKers maY Be aT rIsK IF THIs Is THe Case.

THE VOLUME SHOULD BE REDUCED.

31.3 Loudspeaker Cable and Connectors

Only Naim Audio speaker cable should be used to connect a loudspeaker to the output of the NAP 500. Custom Naim Audio loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used.

DamaGe To THe amPLIFIer maY resuLT IF “HIGH DeFInITIon” CaBLe or anY oTHer sPeCIaL CaBLe Is useD To ConneCT THe LouDsPeaKers.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

e33

NAP 500 Power Amplifier

32 naP 500 Connections

32.1 naP 500 Connected to naP 500Ps

signal

input ch1

(L)

mains input and fuse

Input Ch1 Input Ch2

ch1

nc ch2

cable direction marker

left speaker

-ve

NAP 500PS Burndy

nc

Interconnect Cables

-ve

right

speaker

signal input ch2(R)

33 NAP 500/NAP 500PS Specification

Power output: 140 Watts per channel, 8Ω

700 VA Transient

Quiescent Consumption: 60VA

Voltage Gain: +29dB

Input Impedance: 18kΩ Frequency response: -3dB @ 1.5Hz and 100kHz Dimensions (H x w x D): NAP 500 - 160 x 432 x 375mm

NAP 500PS - 87 x 432 x 314mm

weights: NAP 500 - 25kg

NAP 500PS - 15.4kg

mains supply (naP 500Ps): 100-120V or 220-240V, 50/60Hz

e34

NAP 300 Power Amplifier

34 Installation and operation

The naP 300 and naP 300Ps should be installed on a dedicated equipment stand intended for the purpose and should be in their final location before connecting cables or switching on. switch on the source and preamplifier components, with the volume turned down, before switching on the naP 300. The naP 300 power button is located on the front panel of the naP 300Ps Power supply.

Care should be taken when siting the naP 300 to ensure that the underside fan inlet and rear outlet are not obstructed.

The naP 300 and naP 300Ps are heavy and care should be taken when lifting or moving them. make sure that the surface they are to be placed on can support the full weight.

34.1 General Connections notes

The negative input and output connections for each channel are common. The mains earth (ground) should always be connected regardless of what other equipment is used in conjunction with Naim power 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.

34.2 Protection notes

In the NAP 300 the fan speed is increased in response to an increase in amplifier dissipation. If the amplifier reaches 70°C due to prolonged running at high level or to airflow being blocked, the output will be interrupted and the fan will run at full speed until it has cooled down. This may take a few minutes.

It is not necessary to switch the amplifier off, but it may be advisable to mute the preamplifier or turn the volume down to avoid surprises when it comes back on.

oPeraTIon oF THe amPLIFIer’s THermaL ProTeCTIon

SUGGESTS PROLONGED USE AT TOO HIGH A VOLUME LEVEL.

Your LouDsPeaKers maY Be aT rIsK IF THIs Is THe Case.

THE VOLUME SHOULD BE REDUCED.

34.3 Loudspeaker Cable and Connectors

Only Naim Audio speaker cable should be used to connect a loudspeaker to the output of the NAP 300. Custom Naim Audio loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used.

DamaGe To THe amPLIFIer maY resuLT IF “HIGH DeFInITIon” CaBLe or anY oTHer sPeCIaL CaBLe Is useD To ConneCT THe LouDsPeaKers.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

e35

NAP 300 Power Amplifier

35 naP 300 Connections

35.1 naP 300 Connected to naP 300Ps

signal input ch1(L)

mains input and fuse

Input Ch1 Input Ch2

ch1

-ve

nc ch2

cable direction marker

nc

Interconnect Cables

NAP 300PS Burndy

left

speaker

-ve

right

speaker

signal

input ch2(R)

e36

36 NAP 300/NAP 300PS Specification

Power output: 90 Watts per channel, 8Ω

500 VA Transient

Quiescent Consumption: 27VA

Voltage Gain: +29dB

Input Impedance: 18kΩ Frequency response: -3dB @ 2Hz and 70kHz Dimensions (H x w x D): Both - 87 x 432 x 314mm weights: NAP 300 - 10.7kg

NAP 300PS - 14.1kg

mains supply (naP 300Ps): 100-120V or 220-240V, 50/60Hz

NAP 250 Power Amplifier

37 Installation and operation

The naP 250 should be installed on a dedicated equipment stand intended for the purpose and should be in its final location before connecting cables or switching on. switch on the source and preamplifier components, with the volume turned down, before switching on the naP 250. The naP 250 power button is located on the front panel.

The naP 250 is heavy and care should be taken when lifting or moving it. make sure that the surface it is to be placed on can support the full weight.

37.1 General Connections notes

The negative input and output connections are all common. The mains earth should always be connected regardless of what other equipment is used. 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.

37.2 Protection notes

If the amplifier’s external case reaches 70°C due to prolonged running at high power, the mains supply will be interrupted and the illuminated logo will switch off until the amplifier has cooled down. This may take up to thirty minutes.

38 naP 250 Connections

38.1 naP 250 rear

oPeraTIon oF THe amPLIFIer’s THermaL ProTeCTIon

SUGGESTS PROLONGED USE AT TOO HIGH A VOLUME LEVEL.

Your LouDsPeaKers maY Be aT rIsK IF THIs Is THe Case.

THE VOLUME SHOULD BE REDUCED.

37.3 Loudspeaker Cable and Connectors

Only Naim Audio speaker cable should be used to connect a loudspeaker to the output of the NAP 250. Custom Naim Audio loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used.

DamaGe To THe amPLIFIer maY resuLT IF “HIGH DeFInITIon” CaBLe or anY oTHer sPeCIaL CaBLe Is useD To ConneCT THe LouDsPeaKers.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

mains input and fuse

left

speaker

39 naP 250 specification

Power output: 80 Watts per channel, 8Ω

400 VA Transient

Quiescent Consumption:

Voltage Gain:

Input Impedance: Frequency response: -3dB @ 2Hz and 65kHz Dimensions (H x w x D): 87 x 432 x 314mm weight 15.8kg mains supply: 100-120V or 220-240V, 50/60Hz

+29dB

25VA

18kΩ

right

speaker

signal input

ch1(L) & ch2(R)

Input

ch1

ch2

-ve

e37

NAPV 145 Power Amplifier

40 Installation and operation

The NAPV 145 is a mono power amplifier intended for use in audio-visual systems. The NAPV 145 should be installed on a dedicated equipment stand intended for the purpose

and should be in its final location before connecting cables or switching on. switch on the source and preamplifier components, with the volume turned down, before switching on

the NAPV 145. The NAPV 145 power button is located on the front panel.

The NAPV 145 is heavy and care should be taken when lifting or moving it. Make sure that

the surface it is to be placed on can support the full weight.

40.1 General Connections notes

The negative input and output connections are all common. The mains earth should always be connected regardless of what other equipment is used. 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.

40.2 Protection notes

If the amplifier’s external case reaches 70°C due to prolonged running at high power, the mains supply will be interrupted and the illuminated logo will switch off until the amplifier has cooled down. This may take up to thirty minutes.

41 NAPV 145 Connections

41.1 NAPV 145 Rear

oPeraTIon oF THe amPLIFIer’s THermaL ProTeCTIon

SUGGESTS PROLONGED USE AT TOO HIGH A VOLUME LEVEL.

Your LouDsPeaKers maY Be aT rIsK IF THIs Is THe Case.

THE VOLUME SHOULD BE REDUCED.

40.3 Loudspeaker Cable and Connectors

Only Naim Audio speaker cable should be used to connect a loudspeaker to the output of the NAPV 145. Custom Naim Audio loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used.

DamaGe To THe amPLIFIer maY resuLT IF “HIGH DeFInITIon” CaBLe or anY oTHer sPeCIaL CaBLe Is useD To ConneCT THe LouDsPeaKers.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

e38

mains input and fuse

42 NAPV 145 Specification

Power output: 80 Watts, 8Ω

400 VA Transient

Quiescent Consumption:

Voltage Gain:

Input Impedance: Frequency response: -3dB @ 2Hz and 65kHz Dimensions (H x w x D): 87 x 432 x 314mm weight 15.8kg mains supply: 100-120V or 220-240V, 50/60Hz

+29dB

15VA

18kΩ

speaker

signal input

Input

i/p

-ve

nc

NAP 200 Power Amplifier

43 Installation and operation

The naP 200 should be installed on a dedicated equipment stand intended for the purpose and should be in its final location before connecting cables or switching on. switch on the source and preamplifier components, with the volume turned down, before switching on the naP 200. The naP 200 power button is located on the front panel.

The naP 200 can provide power for an appropriate naim audio preamplifier. The power supply output is carried on the DIn input socket.

The naP 200 is heavy and care should be taken when lifting or moving it. make sure that the surface it is to be placed on can support its full weight.

43.1 General Connections notes

The negative input and output connections are all common. The mains earth should always be connected regardless of what other equipment is used. 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.

43.2 Protection notes

If the amplifier’s external case reaches 70°C due to prolonged running at high power, the mains supply will be interrupted and the illuminated logo will switch off until the amplifier has cooled down. This may take up to thirty minutes.

44 naP 200 Connections

44.1 naP 200 rear

oPeraTIon oF THe amPLIFIer’s THermaL ProTeCTIon

SUGGESTS PROLONGED USE AT TOO HIGH A VOLUME LEVEL.

Your LouDsPeaKers maY Be aT rIsK IF THIs Is THe Case.

THE VOLUME SHOULD BE REDUCED.

43.3 Loudspeaker Cable and Connectors

Only Naim Audio speaker cable should be used to connect a loudspeaker to the output of the NAP 200. Custom Naim Audio loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used.

DamaGe To THe amPLIFIer maY resuLT IF “HIGH DeFInITIon” CaBLe or anY oTHer sPeCIaL CaBLe Is useD To ConneCT THe LouDsPeaKers.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

mains input and fuse

left

speaker

45 naP 200 specification

Power output: 70 Watts per channel, 8Ω

300 VA Transient

Quiescent Consumption:

Voltage Gain:

Input Impedance: Frequency response: -3dB @ 2Hz and 65kHz Power supply output: 24V, 0.3A Dimensions (H x w x D): 87 x 432 x 314mm weight 11.6kg mains supply: 100-120V or 220-240V, 50/60Hz

+29dB

11VA

18kΩ

right

speaker

signal input

ch1(L) & ch2(R) and

preamp power

supply

Input/Preamp

Power socket

ch2

-ve

ch1

24V

0.3A

e39

NAP 155 XS Power Amplifier

46 Installation and operation

The naP 155 Xs should be installed on a dedicated equipment stand intended for the purpose and should be in its final location before connecting cables or switching on. switch on the source and preamplifier components, with the volume turned down, before switching on the naP 155 Xs. The naP 155 Xs power switch is located on the rear panel.

The naP 155 Xs can provide power for an appropriate naim audio preamplifier. The power supply output is carried on the DIn input socket.

46.1 General Connections notes

The negative input and output connections are all common. The mains earth should always be connected regardless of what other equipment is used. 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.

46.2 Protection notes

If the amplifier’s external case reaches 70°C due to prolonged running at high power, the mains supply will be interrupted and the illuminated logo will switch off until the amplifier has cooled down. This may take up to thirty minutes.

47 naP 155 Xs Connections

47.1 naP 155 Xs rear

oPeraTIon oF THe amPLIFIer’s THermaL ProTeCTIon

SUGGESTS PROLONGED USE AT TOO HIGH A VOLUME LEVEL.

Your LouDsPeaKers maY Be aT rIsK IF THIs Is THe Case.

THE VOLUME SHOULD BE REDUCED.

46.3 Loudspeaker Cable and Connectors

Only Naim Audio speaker cable should be used to connect a loudspeaker to the output of the NAP 155 XS. Custom Naim Audio loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used.

DamaGe To THe amPLIFIer maY resuLT IF “HIGH DeFInITIon” CaBLe or anY oTHer sPeCIaL CaBLe Is useD To ConneCT THe LouDsPeaKers.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for both channels.

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power switch

mains input and fuse

left

speaker

48 naP 155 Xs specification

Power output: 60 Watts per channel, 8Ω

250 VA Transient

Quiescent Consumption:

Voltage Gain:

Input Impedance: Frequency response: -3dB @ 3Hz and 50kHz Power supply output: 24V, 0.25A Dimensions (H x w x D): 70 x 432 x 301mm weight 7.5kg mains supply: 100-120V or 220-240V, 50/60Hz

+29dB

10VA

18kΩ

right

speaker

note: The NAP 155 XS features various technologies to

reduce microphonic effects. Some movement of the board and sockets when connecting and disconnecting cables is normal.

signal input

ch1(L) & ch2(R) and

preamp power

supply

Input/Preamp

Power socket

ch2

-ve

24V

0.25A

ch1

NAPV 175 Power Amplifier

49 Installation and operation

The NAPV 175 is a three channel power amplifier intended for use in audio-visual systems.

The three channels provide power to drive a centre channel speaker and a pair of either main front or surround channel speakers. audio line level input is via two 4-pin DIn sockets - one for the centre channel and one for the main or surround pair.

The NAPV 175 should be installed on an equipment rack intended for the purpose and

in its final location before connecting cables or switching on. switch on the source and

preamplifier components, with the volume turned down, before switching on the NAPV

175. The power switch is located on the rear panel.

The NAPV 175 is heavy and care should be taken when lifting or moving it. Make sure that

the surface it is to be placed on can support the full weight.

49.1 General Connections notes

The mains earth grounds only the case and the electrostatic screen within the transformer and is not connected to the signal negative. The mains earth must always be connected to “ground” regardless of any other equipment used. In order to avoid hum-loops the signal negative of the whole system should be connected to the mains earth in one place.

49.2 Protection notes

Once installed the NAP V175 is intended to remain permanently powered up via its rear panel switch. If the internal heatsink reaches 70°C due to prolonged running at very high dissipation the mains supply will be interrupted and the illuminated logo will go off until the amplifier has cooled down. This may take up to thirty minutes.

50 NAPV 175 Connections

50.1 NAPV 175 Rear

oPeraTIon oF THe amPLIFIer’s THermaL ProTeCTIon

SUGGESTS PROLONGED USE AT TOO HIGH A VOLUME LEVEL.

Your LouDsPeaKers maY Be aT rIsK IF THIs Is THe Case.

THE VOLUME SHOULD BE REDUCED.

49.3 Loudspeaker Cable and Connectors

Only Naim Audio speaker cable should be used to connect a loudspeaker to the output of the NAPV 175. Custom Naim Audio loudspeaker connectors are supplied to make the connection and in order to comply with current European safety regulations these should always be used.

DamaGe To THe amPLIFIer maY resuLT IF “HIGH DeFInITIon” CaBLe or anY oTHer sPeCIaL CaBLe Is useD To ConneCT THe LouDsPeaKers.

Ensure when connecting speakers that they are “in phase”. That is, the positive and negative connection orientation at both the speaker and amplifier ends of the cable is the same for all channels.

power

switch

mains

input and

fuse

left

speaker

centre

speaker

51 NAPV 175 Specification

Power output: 50 Watts per channel, 8Ω Channels: Three Quiescent Consumption:

Voltage Gain:

Input Impedance: Frequency response: -3dB @ 3Hz and 50kHz Dimensions (H x w x D): 70 x 432 x 301mm weight 7.9kg mains supply: 100-120V or 220-240V, 50/60Hz

+29dB

10VA

18kΩ

right

speaker

Input - Centre

nc

-ve

signal

nc

signal

input

centre

Ch1 & Ch2

ch2

-ve

signal input ch1(L) & ch2(R)

Input -

ch1

nc

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Declarations of Conformity

52 Declaration of Conformity

manufacturer Naim Audio Limited, Southampton Road, Salisbury, England, SP1 2LN Products Preamplifiers - naC 552, naC 252, naC 282, naC 202, naC 152 Xs

Integrated amplifiers - supernait, naIT Xs, naIT 5i

Power Amplifiers - NAP 500/NAP 500PS, NAP 300/NAP 300PS, NAP 250,

NAPV 145, NAP 200, NAP 155 XS, NAPV 175,

safety en 60065 safety EN 60065 - Audio video and similar electronic apparatus. Safety

requirements.

emC EN 55013 - Sound and television broadcast receivers and associated

equipment. EN55020 - Electromagnetic immunity of broadcast receivers and associated equipment. EN 61000-3-2 - Limits for harmonic current emissions. EN 61000-4-2 - Testing and measurement. Electrostatic discharge immunity.

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Products that display the crossed-out wheeled bin logo cannot be disposed of as domestic waste. These products must be disposed of at facilities capable of re-cycling them and appropriately handling any waste by-products. Contact your local authority for details of the nearest such facility. appropriate recycling and waste disposal helps conserve resources and protects the environment from contamination.

Part no. 12-001-0041 Iss. 4

Naim NA-P 200, NA-P 500, PREAMPLIFIERS owners manual

Specifications and Main Features

Frequently Asked Questions

User Manual