NAIM NA-C 282, NA-C 252, NA-C 552, NA-IT 5I, NA-IT XS User 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:

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.

WARNING

THIS APPARATUS

MUST BE EARTHED

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

Contents

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

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.

the mains lead may not correspond with the coloured

markings identifying the terminals in the plug proceed as

follows:

The wire coloured GREEN-AND-YELLOW must be

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 N or coloured BLACK.

The wire coloured BROWN must be connected to the

terminal in the plug marked with the letter L or coloured

RED.

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 N o n - r ewirab l e Mains P l u gs

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 per formance. 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.

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 inter ference. 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.

Introduction

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

NAC 552PS

NAC 552 Preamplifier

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

balance

mute

mono

source

bank

record

bank

source and record selection

5.2 NAC 552 Rear

in 1 in 2 in 3

in 4

in 5 in 6 in 8

ch 1(L) ch 2(R)

signal ground in 9

ch 1(L) ch 2(R)

NAC 552PS

in 7 RC5 in

ch1

-ve

nc nc

ch2

Inputs 1, 2 & 3

ch1

-ve

ch1 (out)

ch2 (out)

ch2

Inputs 4, 5 & 6

+ve

-ve

+ve

ch1

ch2

Input 7

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.

NAC 552 Preamplifier

5.3 NAC 552 Connected to NAC 552PS

mains input and fuse

Note: For best performance the Burndy and 5 pin DIN

cables should be run as close together as possible.

to stereo power

ampliers

to mono or dual mono

power ampliers

additional signal output

cable direction marker

NAC 552 Burndy

240° 5 to 5 pin DIN

Interconnect Cables

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

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 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

8.1 NAC 252 Front

volume

balance

mute

mono

source

bank

record

bank

source and record selection

Operational features common to all preamplifiers and integrated amplifiers are described in Section 28

NAC 252 Preamplifier

8.3 NAC 252 Connected to Supercap

mains input and fuse

Note: For best performance the Burndy and 5 pin DIN

cables should be run as close together as possible.

to stereo power

ampliers

to mono or dual mono

power ampliers

additional signal output

8.2 NAC 252 Rear

in 1 cdin 2

tuner

in 3 tape

in 4 av

in 6 (alternative)

cd/RCA Phono

ch1(L)

ch2(R)

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

RS232

interface

supercap RC5 in

in 5 aux 1

in 6 aux 2

supercap

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.

signal ground

ch1

-ve

nc nc

ch2

Inputs 1, 2 & 6

ch1

-ve

ch1 (out)

ch2 (out)

ch2

Inputs 3, 4 & 5

+ve

-ve

+ve

ch1

ch2

Input 6

(alternative)

cable direction marker

NAC 252 Burndy

240° 5 to 5 pin DIN

Interconnect Cables

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

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 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.

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.

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.

11 NAC 282 Controls and Connections

11.1 NAC 282 Front

volume

balance

mute

mono

source

bank

record

bank

source and record selection

Operational features common to all preamplifiers and integrated amplifiers are described in Section 28

NAC 282 Preamplifier

to power

amplier

with internal power supply

11.2 NAC 282 Rear

in 1 cdin 2

tuner

in 3 tape

in 4 av

signal ground

in 6 (alternative) cd/RCA

Phono

ch1(L)

ch2(R)

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

RS232 interface

RC5 in

in 5 aux 1

in 6 aux 2

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.

to NAPSC

power supply/output option sockets

with link and blanking plugs tted

ch1

-ve

nc nc

ch2

Inputs 1, 2 & 6

ch1

-ve

ch1 (out)

ch2 (out)

ch2

Inputs 3, 4 & 5

+ve

-ve

+ve

ch1

ch2

Input 6

(alternative)

11.3 NAC 282 Connected to Supercap and NAPSC

mains input and fuse

to stereo power

ampliers

to mono or dual mono

power ampliers

additional signal output

cable direction marker

4 to 4 pin DIN

Interconnect Cables

240° 5 to 5 pin DIN

E10

NAC 282 Preamplifier

11.4 NAC 282 Connected to Hi-Cap and NAPSC

mains input and fuse

to stereo power ampliers

to mono or dual mono power

ampliers

additional signal output

cable direction marker

240° 5 to 5 pin DIN

Interconnect Cables

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

Note: Alternative upgrade schemes and product

combinations may be feasible. Contact your local

representative or Naim Audio directly for further

information.

E11

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.

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

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.

volume

mute

mon

source selection

14 NAC 202 Controls and Connections

14.1 NAC 202 Front

Operational features common to all preamplifiers and integrated amplifiers are described in Section 28

E12

NAC 202 Preamplifier

to power

amplier

with internal power supply

14.2 NAC 202 Rear

in 1 cdin 2

tuner

in 3 tape

in 4 av

in 5 aux 1

in 6 aux 2

cd/RCA

Phono

ch1(L)

ch2(R)

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

RS232 interface

RC5 in

signal g’nd

in 6 (alternative)

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.

to NAPSC

power supply/output option sockets

with link and blanking plugs tted

ch1

-ve

nc nc

ch2

Inputs 1, 2 & 6

ch1

-ve

ch1 (out)

ch2 (out)

ch2

Inputs 3, 4 & 5

+ve

-ve

+ve ch1

ch2

Input 6

(alternative)

14.3 NAC 202 Connected to Hi-Cap and NAPSC

mains input and fuse

to stereo power ampliers

to mono or dual mono power

ampliers

additional signal output

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

cable direction marker

4 to 4 pin DIN

Interconnect Cables

240° 5 to 5 pin DIN

+ 30 hidden pages