o w n e r s m a n u a L P R E A M P L I F I E R S
I N T E G R A T E D A M P L I F I E R S , P O W E R E N G L I S H D E U T S C H F R A N Ç A I S
A M P L I F I E R S I T A L I A N 0
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:
w a r n i n g
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 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 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 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.
Operational features common to all preamplifiers and integrated amplifiers are described in Section 28
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.
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 balance
5.2 NAC 552 Rear
source bank
record bank
|
|
|
|
|
|
|
|
|
|
|
mono |
|
|
|
mute |
|
source and record |
||||
|
|
|
|
|
|
|
selection |
|||
|
in 7 |
RC5 in |
|
|
NAC 552PS |
|||||
|
|
|||||||||
|
|
|
|
|
|
|
|
|
|
|
in 1 |
in 2 |
in 3 |
in 4 |
in 5 |
in 6 |
signal ground |
in 8 |
in 9 |
NAC 552PS |
|
|
|
|
|
|
|
ch 1(L) ch 1(L) |
|
|
|
|
|
|
|
|
|
ch 2(R) ch 2(R) |
|
|
Inputs 1, 2 & 3 |
Inputs 4, 5 & 6 |
|
Input 7 |
|
|
|
|||
|
|
|
|
ch1 |
|
+ve |
|
|
|
|
nc |
|
|
(out) |
|
|
|
|
|
ch1 |
ch1 |
|
+ve |
ch1 |
|
|
|
||
nc |
|
ch2 |
|
|
|
||||
ch2 |
|
ch2 |
|
(out) |
ch2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-ve |
|
|
|
-ve |
|
-ve |
|
|
|
E4
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 |
to mono or dual mono |
|
and fuse |
poweramplifiers |
|
|
|
|
|
|
|
6 NAC 552/NAC 552PS Specification |
|
|
|
cable |
|
|
|
||||
|
|
|
|
|
direction |
|
|
|
|
|
|
Input Sensitivities: |
75mV, 47kΩ |
|
|
marker |
|
|
|
||||
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 stereo power amplifiers
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.
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
source bank
record bank
volume |
balance |
|
|
|
|
|
|
|
|
|
|
mono |
|
|
|
mute |
|
source and record |
|||||
|
|
|
|
|
|
|
|
|
|
selection |
|
E6
NAC 252 Preamplifier
8.2 NAC 252 Rear
in 5 |
|
in 6 |
supercap |
|
|
|
RC5 in |
|
supercap |
|
|||||
|
|
||||||
aux 1 |
|
aux 2 |
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
in 1 |
in 2 |
in 3 |
in 4 |
signal |
in 6 (alternative) |
|
|
cd |
tuner |
tape |
av |
ground |
|
|
|
Inputs 1, 2 & 6 |
Inputs 3, 4 & 5 |
Input 6 |
|
||||
(alternative) |
|||||||
|
|
|
|
|
|||
|
|
|
|
ch1 |
|
+ve |
|
|
nc |
|
|
(out) |
|
||
ch1 |
ch1 |
|
+ve |
ch1 |
|||
nc |
|
ch2 |
|||||
ch2 |
|
ch2 |
|
(out) |
ch2 |
|
|
|
|
|
|
|
|
||
-ve |
|
|
|
-ve |
-ve |
|
|
8.3 NAC 252 Connected to Supercap
cd/RCA Phono |
|
|
|
aux 2/RCA Phono |
RS232 |
|
|
||||
ch1(L) |
|
|
|
ch1(L) |
interface |
ch2(R) |
|
|
|
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.
Note: For best performance the Burndy and 5 pin DIN cables should be run as close together as possible.
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 |
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
mono |
|
|
|
to stereo power |
|||||||
|
|
to mono or dual |
|
|
|
|||||||||||
|
|
|
poweramplifiers |
|
|
|
amplifiers |
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
cable |
|
|
|
|
Interconnect Cables |
|
|||||||
|
|
|
direction |
|
|
|
|
NAC 252 Burndy |
|
|
||||||
|
|
|
|
|
|
|
|
|
||||||||
|
|
|
marker |
|
|
|
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.
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
source bank
record bank
volume |
balance |
|
|
|
|
|
|
|
|
|
|
mono |
|
|
|
mute |
|
source and record |
|||||
|
|
|
|
|
|
|
|
|
|
selection |
|
E8
NAC 282 Preamplifier
11.2 NAC 282 Rear
in 5 |
|
in 6 |
power supply/output option sockets |
|
to NAPSC |
|
|
|
RC5 in |
||
|
|
|
|||||||||
aux 1 |
|
aux 2 |
withlinkandblankingplugsfitted |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
in 1 |
in 2 |
in 3 |
in 4 |
signal |
in 6 (alternative) |
|
|
cd |
tuner |
tape |
av |
ground |
|
|
|
Inputs 1, 2 & 6 |
Inputs 3, 4 & 5 |
Input 6 |
|
||||
(alternative) |
|||||||
|
|
|
|
|
|||
|
|
|
|
ch1 |
|
+ve |
|
|
nc |
|
|
(out) |
|
||
ch1 |
ch1 |
|
+ve |
ch1 |
|||
nc |
|
ch2 |
|||||
ch2 |
|
ch2 |
|
(out) |
ch2 |
|
|
|
|
|
|
|
|
||
-ve |
|
|
|
-ve |
-ve |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
cd/RCA |
|
aux 2/RCA |
|
to power |
RS232 |
|
Phono |
|
Phono |
|
amplifier |
interface |
|
ch1(L) |
|
ch1(L) |
|
with |
|
|
ch2(R) |
|
ch2(R) |
|
internal |
|
|
|
|
|
|
|
power |
|
|
|
|
|
|
supply |
|
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
mains input and fuse
cable direction marker
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
additional signal output |
|
|
|
|
||||||||||
|
|
|
|
|
mono |
|
|
|
to stereo power |
|||||
to mono or dual |
|
|
|
|||||||||||
|
|
poweramplifiers |
|
|
|
amplifiers |
||||||||
Interconnect Cables
4 to 4 pin DIN 240° 5 to 5 pin DIN
E9
NAC 282 Preamplifier
11.4 NAC 282 Connected to Hi-Cap and NAPSC
tostereopoweramplifiers
|
|
|
|
|
|
|
|
|
|
|
cable |
|
|
Interconnect Cables |
|
||
|
|
direction |
|
|
240° 5 to 5 pin DIN |
|
|
|
|
|
marker |
|
|
|
|
||
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
mains input |
additional |
to mono or dual |
and fuse |
signal out- |
mono power |
|
put |
amplifiers |
Note: Alternative upgrade schemes and product combinations may be feasible. Contact your local representative or Naim Audio directly for further information.
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 |
E10
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
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 NAC 202 Controls and Connections
14.1 NAC 202 Front
volume |
mon |
|
mute |
|
|
|
|
|
source selection |
||||
E11
NAC 202 Preamplifier
14.2 NAC 202 Rear
signal |
|
in 6 |
power supply/output option sockets |
to NAPSC |
|
|
|
RC5 in |
||
|
|
|
|
|||||||
g’nd |
|
(alternative) |
withlinkandblankingplugsfitted |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
in 1 |
in 2 |
in 3 |
in 4 |
in 5 |
in 6 |
|
|
cd |
tuner |
tape |
av |
aux 1 |
aux 2 |
|
|
Inputs 1, 2 & 6 |
Inputs 3, 4 & 5 |
|
Input 6 |
||||
(alternative) |
|||||||
|
|
|
|
|
|||
|
|
|
|
ch1 |
|
+ve |
|
|
nc |
|
|
(out) |
|
||
ch1 |
ch1 |
|
+ve |
ch1 |
|||
nc |
|
ch2 |
|||||
ch2 |
|
ch2 |
|
(out) |
ch2 |
|
|
|
|
|
|
|
|
||
-ve |
|
|
|
-ve |
|
-ve |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
cd/RCA |
|
aux 2/RCA |
|
to power |
RS232 |
|
Phono |
|
Phono |
|
amplifier |
interface |
|
ch1(L) |
|
ch1(L) |
|
with |
|
|
ch2(R) |
|
ch2(R) |
|
internal |
|
|
|
|
|
|
|
power |
|
|
|
|
|
|
supply |
|
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
mains input and fuse
cable direction marker
tostereopoweramplifiers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
15 NAC 202 Specification |
||
|
|
|
|
|
|
Input Sensitivities: |
75mV, 47kΩ |
|
additional |
to mono or dual |
Overload Margins: |
40dB |
|||||
signal out- |
mono power |
|
(all inputs all audio frequencies) |
|||||
put |
amplifiers |
|
||||||
Main Output Level: |
0.775V, <50Ω |
|||||||
|
|
|
|
|
|
|||
Interconnect Cables |
|
|
|
Tape Output Level: |
75mV, 600Ω |
|||
|
|
|
||||||
|
|
|
Auxiliary Power Outputs: |
For Naim phono stage. |
||||
|
|
|
|
|
|
|||
4 to 4 pin DIN |
|
|
|
|
Dimensions (H x W x D): |
87 x 432 x 314mm |
||
|
|
|
|
|||||
240° 5 to 5 pin DIN |
|
|
|
|
Weight: |
7.0kg |
||
|
|
|
|
|||||
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
E12
Loading...