Naim n-SUB Owner's Manual

W O R L D C L A S S H I F I

O W N E R S M A N U A L

Speakers: SL2, allæ, Ariva, axent, axess, n-SATS, n-CENT, n-SUB.

with amplifiers and loudspeakers are used.

Warning: an apparatus with CL ASS I construction shall be

Where the mains plug or an appliance coupler is used as the

the mains plug from the mains outlet.

The following label is attached to all mains powered

This equipment has been tested and found to comply with the

These limits are designed to provide reasonable protection

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

this equipment does cause harmful interference to radio or

television reception, which can be determined by turning

from that to which the receiver is connected.

technician for help.

W A R N I N G

THIS APPARATUS

MUST BE EARTHED

Contents

Section

3

3

Ariva

2 Connections

It is important for both safety and performance that

the standard cables supplied are not modified.

2.1 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 tend to deposit may degrade the

sound.

2.2 Loudspeaker Cables

Loudspeaker cables are vitally important and your dealer should

make them up to suit your installation. The cables 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. Contact your

dealer or Naim Audio for advice.

Many Naim amplifiers are designed only to work with Naim

loudspeaker cable and using alternatives may degrade the

performance or even damage the amplifier. Naim loudspeaker

cable is directional and should be oriented so that the printed

arrow points towards the speakers. The amplifier/loudspeaker

connectors supplied are designed to make a robust electro-

mechanical connection and to comply with European safety

regulations. They should be used in preference to alternatives.

3 Mains Power Connection

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.

1 Equipment Installation

Normally your Naim Audio equipment will have been installed by the dealer who sold

it to you - even if you live outside their immediate vicinity. In any event however

your dealer is responsible for making sure that the system performs as it should.

Information given here is not intended to reduce this responsibility in any way.

Introduction

This manual covers the SL2, allæ, Ariva, axent, axess, n-SATS and n-CENT

3.1 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 which is coloured

must be

connected to the terminal in the plug which is marked by the

letter

or by the safety earth symbol or coloured

or

YELLOW

.

The wire which is coloured

must be connected to the

terminal in the plug which is marked with the letter

or

coloured

.

The wire which is coloured

must be connected to the

terminal in the plug which is marked with the letter

or coloured

.

3.2 Non-rewirable Mains Plugs

If a non-rewirable plug is cut from a mains lead (for whatever

purpose) the plug

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.

3.3 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 a mechanical

hum from power amplifier and power supply transformers.

Naim transformers are large in size with heavy gauge windings,

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 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.

4 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.

4.1 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.

4.2 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 power amplifiers

are switched off.

4.3 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.

4.4 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.

Systems incorporating moving coil phono preamplifiers and

active crossovers are more likely to suffer. A radio frequency

filter kit is available for some Naim equipment but sound quality

will be progressively compromised as more elements of the

kit are fitted. In situations of extreme radio interference Naim

equipment may be unsuitable.

4.5 Non-standard Cables

Use of non-standard speaker cables or interconnects may

invalidate your guarantee.

4.6 Lightning Precautions

Your Naim hi-fi system can be damaged by lightning. Power

amplifiers are particularly at risk 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.

4.7 Liquid Precautions

Equipment must not be exposed to dripping or splashing and no

objects filled with liquid, such as vases, should be placed on the

equipment.

4.8 Equipment Fuses

Mains powered Naim Audio equipment is fitted with a mains

input fuse on the rear panel adjacent to the mains input socket.

Replace it if necessary only with the spare fuse supplied or

with identical fuses. Repeated failure of this fuse points to an

equipment or system fault that should be investigated by your

dealer or at the factory by Naim itself.

4.9 Problems?

Consumer protection varies from country to country. In

most territories a dealer 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 dealer. Contact Naim Audio directly for

help and advice if necessary.

4.10 Repairs and Updates

It is essential that repairs and updates are only carried out

by an authorised Naim dealer or at the factory by Naim itself.

Many components are 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 the Service Department:

Tel:

Email:

[e-mail]

Please quote the product serial number (found on its rear panel)

in all correspondence.

Introduction

3

SL2

5 Introduction and Positioning

Naim loudspeakers are precision acoustic instruments that will only achieve optimal

performance if installed and set up carefully. Please read these instructions before

unpacking, installing and using the loudspeakers. Please also retain the packaging

for future use.

The performance of any loudspeaker will be influenced by the room and position in which it is

located. Even small changes of loudspeaker position can significantly influence the sound. Choose

a site where the loudspeakers can be located between 1.2m and 4m apart (4ft and 13ft), clear of

room corners, and where each loudspeaker is between 10cm and 45cm (4” and 18”) away from a

solid rear wall. The distance between the speakers and the rear wall is the aspect of positioning most

likely to require adjustment as you become familiar with the characteristics of the loudspeakers in

your room.

The

is not magnetically shielded and should be kept well away from CRT displays. Should a

display suffer picture distortion caused by the proximity of an

contact your dealer or installer for

advice.

Loudspeakers, like many hi-fi components, will take time to stabilise and “run-in” and can be

expected to improve with use even over a period of weeks. For this reason it is prudent not to finalise

positioning until the system has been operating for at least one week.

5.1 Unpacking SL2

To minimise the risk of accident and damage,

components

should be removed from the packaging one speaker at a time

and in the following order. Components referred to in the

following paragraphs can be identified through Diagram 5.3.

Remove the central packing piece and

Tweeter Suspension

Assembly.

Separate the two and place the

Tweeter Suspension

Assembly

to one side.

Remove the card shield containing the

Place the

to

one side. Also remove the card packing piece that protects the

curved top of the

Carefully lift the

out of the carton and place it to

one side. Take care not to damage either the drive unit or the

aluminium plate on the underside of the cabinet.

Now lift the

together with its foam end-caps

out of the carton. Stand it on the floor,

lowermost, and

remove the top foam end-cap. Turn the cabinet upside down

being careful not to damage the aluminium plate. Finally remove

the sprung foam end-cap by pulling its sides outward and lifting

it over the plinth.

5.2 Assembling and Installing SL2

Stage 1

With each

upside down the floor spikes can be

fitted. Screw a spike and lock-nut into each threaded hole in the

plinth. If the loudspeakers are to stand on a thick carpet, leave a

generous length of spike protruding past the lock-nut. If they are

to stand on thinly carpeted or plain floor, the spike length should

be reduced. In either case, best results will be achieved when

the spike length is set to the minimum required for the spike

lock-nuts to sit just above the carpet pile.

Stage 2

Take each Tweeter Suspension Assembly in turn and offer it up to

the

Tweeter Mounting Points

on the rear of each Plinth. Attach

it using the bolts and allen key supplied. The Tweeter Suspension

Assembly should be fixed as close to vertical as possible. Use

the back of the Lower Cabinet as a guide.

Now move each

with the

Tweeter Suspension

Assembly

attached into the appropriate position. Take care not

to place them so close to the wall that the rear spikes foul any

carpet gripper that may be fitted. Also leave some space for final

adjustment of the

Tweeter Suspension Assembly

and for the

connecting cables.

Adjust the spikes so that the cabinets are upright (a small

spirit level will help) and do not rock. Tighten the lock-nuts with

an appropriate spanner. Check again, once the lock-nuts are

tightened, that the cabinets do not rock on the spikes.

With thick carpet and underlay it can be difficult to ensure

that the spikes are resting on the floor. Small slits cut into the carpet

once the loudspeaker position is finalised will help.

If you intend to install the SL2 on a non-carpeted floor the

spikes should be used in conjunction with Naim Floor Protectors

(see Diagram 5.4) and set up so that just the tip extends beyond

the lock nut. Your retailer or distributor will be able to supply Floor

Protectors.

Stage 3

The pack containing this manual also contains

and

Fit a

and a

to the three

holes in the aluminium top surface of each

There are two holes at the front and one at the back. Spare

and

are included in the pack. The

should be a

loose fit in the holes. See Diagram 5.5

Now take each

in turn and carefully lower it

onto the appropriate

locating the

in the

corresponding holes on its underside. At the same time as

each

is lowered onto each

the

tweeters must be inserted through the apertures of the

The loose fit of the

allows some adjustment of

the alignment of the two cabinets. See Diagram 5.6

SL2

5.5 SL2 Assembly

Tweeter Suspension

Assembly

Tweeter Suspension

Assembly

Tweeter Mounting

5.3 SL2 Components

The metal bar across

the rear underside of the

SL2 that attaches the Lower

Cabinet to the Plinth is

intended to be slightly loose.

5.4 Floor Protectors

touch the

The card spacing jig packed with this

manual can be used to support the bottom edge of the

as

it is fitted. Seen from the side, the

should continue the

curved form of the front of the

5.7 Connection

If the loudspeakers are to be used with Naim amplification, Naim

loudspeaker cable will produce the best results and is necessary

with some amplifiers. Cable lengths to both loudspeakers should

be equal and be between 3.5 metres and 20 metres (11.5ft and

66ft). Your local retailer will be able to make up cables of the

appropriate length.

If the

is to be used in an active system, speaker cables with

their custom Naim plugs should be connected to the appropriate

input sockets on the back of the

Tweeter Suspension Arm

(HF) and

(LF). Ensure that each positive plug

- identified by a rib on the side of the cable and a tag marked

“pos” on the side of the connector body - is inserted to the red

input sockets.

If the

is to be used in a passive system, the

must be mounted to the back of each

Screws and decoupling grommets are supplied in the

pack that contains the passive crossovers. Tighten the screws

so that the screw heads just touch the decoupling grommets

without compressing them.

The output cables from the

must be

connected to the input sockets on the back of the speaker,

the longer cable to the sockets on the back of each

Tweeter

and the shorter cable to the sockets

on each

The cables should be dressed such

that they do not touch any other

component and such

that the output plugs align naturally with input sockets. Stress

in the cables will interfere with the decoupling between

components.

Finally the amplifier output speaker cables, with their custom

Naim plugs, should be connected to the input sockets on the

back of the

Ensure that each positive

plug - identified by a rib on the side of the cable and a tag

marked “pos” on the side of the connector body - is inserted to

the red input sockets.

SL2

It is vitally important for correct operation of SL2 that the

are located properly on the

that the

are in place and that the two cabinets only touch via the

spacers.

The alignment of the Tweeter within the Upper Cabinets can

be adjusted via either the two bolts connecting the Tweeter

Suspension Assembly to the Plinth or the four screws that attach

the

Tweeter Adjustment Panel

around the front face of the

Tweeter. If the four adjustment panel bolts are loosened they

should be re-tightened as securely as possible. As well as being

adjusted to sit centrally when viewed from the front, and flush

with the front panel, the Tweeter must oscillate freely without

touching any part of either cabinet.

Finally fit a

to each

by aligning it with the top of the

before pushing it gently against the fixing tape

on the

The lower edge of the

should not

Tweeter

Adjustment Panel

SL2 Specification

30Hz - 20kHz

88dB/1W/1m

150 Watts (music programme)

6Ω (nominal)

1027 x 282 x 310mm

Weight (unpacked):

25.4kg

Cherry, Maple, Black

5.6 SL2 Assembly

allæ

6 Introduction and Positioning

Naim loudspeakers are precision acoustic instruments that will only achieve optimal

performance if installed and set up carefully. Please read these instructions before

installing and using the loudspeakers. Please also retain the packaging for future

use.

The performance of any loudspeaker will be influenced by the room and position in which it is

located. Even small changes of loudspeaker position can significantly influence the sound. Choose

a site where the loudspeakers can be located between 1.2m and 4m apart (4ft and 13ft), clear of

room corners, and where each loudspeaker is between 10cm and 45cm (4” and 18”) away from a

solid rear wall. The distance between the speakers and the rear wall is the aspect of positioning most

likely to require adjustment as you become familiar with the characteristics of the loudspeakers in

your room.

The

is not magnetically shielded and should be kept well away from CRT displays. Should a

display suffer picture distortion caused by the proximity of

contact your dealer or installer for

advice.

Loudspeakers, like many hi-fi components, will take time to stabilise and “run-in” and can be

expected to improve with use even over a period of weeks. For this reason it is prudent not to finalise

positioning until the system has been operating for at least one week.

6.1 Installation

Stage 1

Each

loudspeaker comprises two separate cabinet

components, the

containing the bass/mid

driver, and the

containing the tweeter. These

Components can be identified through diagram 6.3.

To begin installation, first fit the floor spikes and lock-nuts to the

base of each

The cabinets can safely be

turned upside-down to aid fitting the spikes. If the loudspeakers

are to stand on a thick carpet, leave a generous length of

spike protruding past the lock-nut. If they are to stand on thinly

carpeted or plain floor, the spike length should be reduced. In

either case, best results will be achieved when the spike length

is set to the minimum required for the spike lock-nuts to sit just

above the carpet pile or floor surface.

The metal bar across the rear underside of the allæ that

attaches the Lower Cabinet to the Plinth is intended to be slightly

loose.

With the floor spikes fitted, each

can be

placed in the appropriate position. Take care not to place the

loudspeakers so close to the wall that the rear spikes foul any

carpet gripper that may be fitted. With the cabinets in position,

adjust the spikes so that the cabinets are upright (a small

spirit level will help) and do not rock. Tighten the lock-nuts with

an appropriate spanner. Check again, once the lock-nuts are

tightened, that the cabinets do not rock on the spikes.

With thick carpet and underlay it can be difficult to ensure

that the spikes are resting on the floor. Small slits cut into the carpet

once the loudspeaker position is finalised will help.

If you intend to install the allæ on a non-carpeted floor the

spikes should be used in conjunction with Naim Floor Protectors

(see Diagram 6.4) and set up so that just the tip extends beyond

the lock nut. Your retailer or distributor will be able to supply Floor

Protectors.

Stage 2

The pack containing this manual also contains six small

Fit three

in the three

holes in the top surface of each

There are two

holes at the front and one at the back. The

should be a

loose fit in the holes.

Take each

in turn and carefully lower it onto

the appropriate

locating the

in the

corresponding holes on its underside. The loose fit of the

allows some adjustment of the alignment of the two cabinets.

Stage 3

Remove the protective tape from the high frequency drivers

mounted in the front of each

Fit the grilles to

the front of each

by locating the grille studs in

the corresponding holes in the cabinet.

6.3 allæ Components

allæ

allæ Specification

30Hz - 20kHz

88dB/1W/1m

150 Watts (music programme)

6Ω (nominal)

940 x 240 x 280mm

Weight (unpacked):

17.6kg

Cherry, Maple, Black

6.2 Connection

If the loudspeakers are to be used with Naim amplification, Naim

loudspeaker cable will produce the best results and is necessary

with some amplifiers. Cable lengths to both loudspeakers should

be equal and be between 3.5 metres and 20 metres (11.5ft and

66ft). Your local retailer will be able to make up cables of the

appropriate length.

Connect the cables from the passive crossover units mounted

on the back of the

to the input sockets on each

cabinet. Each longer cable should be connected to the sockets

on the back of the

and each shorter cable to

the sockets on the back of the

Finally connect

the amplifier output speaker cables with their custom Naim plugs

to the input sockets on the back of the passive crossover units.

Ensure that each positive plug - identified by a rib on the side of

the cable and a tag marked “pos” on the side of the connector

body - is inserted to the red input sockets.

If the

is to be used in an active system the passive

crossover units should be removed and the

(LF) and

(HF) input sockets connected via

loudspeaker cables with custom Naim plugs directly to the

appropriate power amplifier.

6.4 Floor Protectors

Ariva

7.1 Installation

Stage 1

Each

Ariva

loudspeaker comprises a separate

and

. These components can be identified from the diagrams

opposite.

To begin installation, first fit four

floor spikes

and

to

the underside of each

. Leave just enough spike length

extending below the lock nut to account for the thickness of

carpet and underlay. Best results will be achieved when the

spike length is set to the minimum required for the lock-nuts to

sit just above the carpet pile. Do not fully tighten the lock-nuts

at this stage.

If you intend to install the Ariva on a non-carpeted floor the

spikes should be used in conjunction with Naim Floor Protectors

(see Diagram 7.3) and set up so that just the tip extends beyond

the lock nut. Your retailer or distributor will be able to supply Floor

Protectors.

With floor spikes fitted, but not tightened, place each plinth on

the floor in the intended loudspeaker position. Use the supplied

allen key, via the access hole in the top surface of the plinth

(see Diagram 7.3), to adjust each spike so that the plinth is

both level and does not rock. Use a spirit level to confirm the

plinth is level and tighten each lock-nut using a 10mm spanner.

With thick carpet and underlay it can be difficult to ensure

that the spikes are resting on the floor. Small slits cut into the

carpet once the loudspeaker position is finalised will help.

Stage 2

Each plinth is fitted with three upward facing decoupling domes.

These domes locate in to the corresponding spherical recesses

in the underside of the Ariva cabinets. To complete the Ariva

installation carefully line-up and lower each cabinet on to its

plinth so that it locates securely (see Diagram 7.4).

7.2 Connection

If the loudspeakers are to be used with Naim amplification,

Naim loudspeaker cable will produce the best results and

is necessary with some amplifiers. Cable lengths to both

loudspeakers should be equal and be between 3.5 metres and

20 metres (11.5ft and 66ft). Your local retailer will be able to

make up cables of the appropriate length.

Connect the loudspeaker cables with their custom Naim plugs

to the input sockets located on the rear of each Ariva cabinet.

Ensure that each positive plug - identified by a rib on the side of

the cable and a tag marked “pos” on the side of the connector

body - is inserted to the red input sockets.

7 Introduction and Positioning

Naim loudspeakers are precision acoustic instruments that will only achieve optimal

performance if installed and set up carefully. Please read these instructions before

installing and using the loudspeakers. Please also retain the packaging for future

use.

The performance of any loudspeaker will be influenced by the room and position in which it is

located. Even small changes of loudspeaker position can significantly influence the sound. Choose

a site where the loudspeakers can be located between 1.2m and 4m apart (4ft and 13ft), clear of

room corners, and where each loudspeaker is between 10cm and 60cm (4” and 24”) away from a

solid back wall. It is not necessary to angle the loudspeakers inwards towards the listening position.

The distance from the back wall is the aspect of positioning most likely to require adjustment as you

become familiar with the characteristics of the loudspeakers in your room. Further from the wall the

speakers will generate less low frequency energy.

The

Ariva

is not magnetically shielded and should be kept well away from CRT displays. Should a

display suffer picture distortion caused by the proximity of

Ariva

contact your dealer or installer for

advice.

Loudspeakers, like many hi-fi components, will take time to stabilise and “run-in” and can be

expected to improve with use even over a period of weeks. For this reason it is prudent not to finalise

Ariva

positioning until they have been operating for at least one week.

Ariva

Ariva Specification

35Hz - 20kHz

90dB/1W/1m

150 Watts (music programme)

4Ω (nominal)

880 x 230 x 310mm

Weight (unpacked):

18.6kg

Cherry, Maple, Black

7.3 Plinth Installation

floor spike

floor spike

7.4 Cabinet to Plinth Assembly

tilt buffer

the plinth to adjust the spikes.

8.1 Connection

If the

or

are to be used with Naim amplification,

Naim loudspeaker cable will produce the best results and is

necessary with some amplifiers. Cable length should be between

3.5 metres and 20 metres (11.5ft and 66ft). Your local retailer

will be able to make up cables of the appropriate length.

Connect the loudspeaker cables with their custom Naim plugs to

the input sockets located on the rear of the enclosure. Ensure

that the positive plug - identified by a rib on the side of the

cable and a tag marked “pos” on the side of the connector body

- is inserted to the red input socket.

8.2 Tweeter Adjustment

The

tweeter

is mounted on an adjustable suspension plate. It

is important both that the tweeter “bounces” freely on the plate

and that it is held in line with the front panel of the enclosure.

If the tweeter does not bounce or it is not held in the correct

position (i.e. the plate appears bent), the plate can be adjusted.

Carefully remove, one at a time, the appropriate fixing screws

and gently bend the appropriate arm or arms of the plate to

correct the bend. Replace the screws, tightened as lightly as

possible to ensure security, and re-test the “bounce”. Repeat

the exercise if necessary. Diagram 8.3 opposite illustrates the

tweeter suspension plate correctly and incorrectly adjusted.

axent, axess

8 Introduction and Installation

Naim loudspeakers are precision acoustic instruments that will only achieve optimal

performance if installed and set up carefully. Please read these instructions before

installing and using the loudspeakers. Please also retain the packaging for future

use.

The performance of any loudspeaker will be influenced by the room in which it is located and

even small changes of loudspeaker position can significantly influence the sound. Alignment with

the listening position and proximity to room boundaries will in particular influence the subjective

performance. The position of a centre channel loudspeaker tends to be influenced by the type

and location of the associated video screen. However, the influence of the room boundaries and

alignment to the listening position should still be taken into account.

The

and

are designed to reproduce full bandwidth, full power signals and are intended

to be positioned centrally just below the screen. If the location of the loudspeaker results in too

much bass some adjustment of low frequency equalisation via the AV processor may be necessary.

Best results from

and

are likely to be gained if they are directly coupled to the floor via

a rigid, spiked stand. Both speakers are equipped with spike location pads on the underside to help

enable such mounting. If however the screen stand is also to carry the speaker it is advisable to at

least decouple the screen, perhaps with compliant pads, so that vibration from the speaker does not

disturb the picture.

The

and

are magnetically shielded. However, the extreme sensitivity of some CRT tubes

to low levels of magnetic flux may mean that, in rare cases, the shielding may not be sufficient.

Should your screen suffer picture distortion caused by the proximity of a centre speaker contact your

dealer or installer for advice.

Loudspeakers, like many hi-fi components, will take time to stabilise and “run-in” and can be

expected to improve with use even over a period of weeks. For this reason it is prudent not to finalise

and

positioning until they have been operating for at least one week.

8.3 Tweeter Adjustment

axent, axess

axent Specification

40Hz - 20kHz

89dB/1W/1m

150 Watts (music programme)

6Ω (nominal)

175 x 940 x 440mm

Weight (unpacked):

27.4kg

Cherry, Maple, Black

axess Specification

45Hz - 20kHz

89dB/1W/1m

150 Watts (music programme)

6Ω (nominal)

175 x 536 x 451mm

Weight (unpacked):

16.6kg

Cherry, Maple, Black

9.1 n-STAND Installation

The

is a dedicated floor-stand for

. It must not

be used to support any other loudspeaker.

To begin

installation, first attach each base to an

upright with the four small cap-head screws using the allen key

supplied (see Diagram 9.3). Once the stand uprights and bases

are securely attached, fit four

floor spikes

and

(see

Diagram 9.3) to the underside of each

. Leave just enough

spike length extending below the lock nut to account for the

thickness of carpet and underlay. Best results will be achieved

when the spike length is set to the minimum required for the

lock-nuts to sit just above the carpet pile. Do not fully tighten

the lock-nuts at this stage.

If you intend to install the n-STAND on a non-carpeted floor

the spikes should be used in conjunction with Naim Floor Protectors

(see Diagram 9.3) and set up so that just the tip extends beyond

the lock nut. Your retailer or distributor will be able to supply Floor

Protectors.

With floor spikes fitted, but not tightened, place each stand on

the floor in the intended loudspeaker position. Use the supplied

allen key via the access holes in the base to adjust each spike

so that the plinth is both level and does not rock. Use a spirit

level to confirm the plinth is level and tighten each lock-nut

using a 10mm spanner.

With thick carpet and underlay it can be difficult to ensure

that the spikes are resting on the floor. Small slits cut into the

carpet once the loudspeaker position is finalised will help.

n-SATS

9 Introduction and Installation

Naim loudspeakers are precision acoustic instruments that will only achieve optimal

performance if installed and set up carefully. Please read these instructions before

installing and using the loudspeakers. Please also retain the packaging for future

use.

are primarily intended to be used in home theatre and multi-channel audio surround channel

applications located behind or adjacent to the listening position.

can also be used as main

speakers in small-scale conventional stereo audio systems. In either application best results will be

achieved if

floor-stands are used.

Like any loudspeakers the performance of

will be influenced by the room and position in

which they are located. Even small changes of position can significantly influence the sound. Choose

a site where they can be located between 1.2m and 4m apart (4ft and 13ft), clear of room corners,

and where each loudspeaker is between 5cm and 60cm (2” and 24”) away from a solid back wall. It

is not necessary to angle the loudspeakers inwards towards the listening position.

The distance from the back wall is the aspect of positioning most likely to require adjustment as

you become familiar with the characteristics of

in your room. The use of floor-stands rather

than wall brackets provides more opportunity for positioning adjustment. Further from the wall the

speakers will generate less low frequency energy.

are magnetically shielded. However, the extreme sensitivity of some CRT displays to low

levels of magnetic flux may mean that, in rare cases when

are located relatively close to a

display, the shielding may not be sufficient. Should a display suffer picture distortion caused by the

proximity of

contact your dealer or installer for advice.

Loudspeakers, like many hi-fi components, will take time to stabilise and “run-in” and can be

expected to improve with use even over a period of weeks. For this reason it is prudent not to finalise

positioning until they have been operating for at least one week.

Mounting lugs must be attached to the rear of

before

they can be mounted on

. First remove the two button-

head screws on the rear of each

using the supplied 3mm

allen key. Replace the buttton-heads with the supplied mounting

lugs and cap-heads. Tighten the cap-head screws with the allen

key (see Diagram 9.4).

With the mounting lugs fitted,

can be lowered onto

so that the lugs engage with the stand cradle. A

central grub screw in the stands can be adjusted to ensure that

the

sits vertically (see Diagram 9.4).

An n-SERIES wall bracket is available that enables n-SATS to

be wall mounted. Contact your dealer or local distributor for more

information.

9.2 Connection

If

are to be used with Naim amplification, Naim

loudspeaker cable will produce the best results and is necessary

with some amplifiers. Cable length should be between 3.5

metres and 20 metres (11.5ft and 66ft). Your local retailer will

be able to make up cables of the appropriate length.

Connect the loudspeaker cables with their custom Naim plugs to

the input sockets located on the rear of the enclosures. Ensure

that the positive plug - identified by a rib on the side of the cable

and a tag marked “pos” on the side of the connector body - is

inserted to the red input socket.

The

incorporates optional cable dressing pins that

enable the loudspeaker cable to be routed down the stand

upright and dressed in place. This is illustrated in Diagram 9.4

n-SATS

9.3 n-STAND Construction

top. Tighten the lock-nuts once

the stand is level.

floor spike

floor spike

floor

n-SATS Specification

50Hz - 20kHz

87dB/1W/1m

100 Watts (music programme)

6Ω (nominal)

285 x 200 x 208mm

Weight (unpacked):

5.5kg

Cherry, Maple, Black Lacquer

Attach the base to the upright

9.4 n-STAND Installation

to the n-STAND cradle and

Dressing the cables

too tightly in the stand

upright may degrade the

n-SATS performance.

Leave some slack -

especially between the

speaker terminals and the

first dressing pin. A small

improvement in n-SATS

subjective performance

may be perceived by

leaving the loudspeaker

cables undressed.

n-CENT

10.1 Installation

The adhesive rubber feet supplied with n-CENT will reduce

vibration transferred to other equipment. Use the template

enclosed with this manual to fit the feet in position.

An n-SERIES wall bracket is available that enables n-CENT to be

wall mounted. Contact your dealer or local distributor for more

information.

Mounting lugs must be attached to the rear of the n-CENT

before it can be attached to the wall bracket. First remove the

two button-head screws on the rear of the n-CENT using the

supplied 3mm allen key. Replace the buttton-heads with the

supplied mounting lugs and cap-heads. Tighten the cap-head

screws with the allen key.

With the mounting lugs fitted, the n-CENT can be lowered onto

the wall bracket so that the lugs engage with the cradle. A

central grub screw in the bracket can be adjusted to ensure that

the n-CENT sits vertically.

10 Introduction and Installation

Naim loudspeakers are precision acoustic instruments that will only achieve optimal

performance if installed and set up carefully. Please read these instructions before

installing and using the loudspeakers. Please also retain the packaging for future

use.

The performance of any loudspeaker will be influenced by the room in which it is located and

even small changes of loudspeaker position can significantly influence the sound. Alignment with

the listening position and proximity to room boundaries will in particular influence the subjective

performance. The position of a centre channel loudspeaker tends to be influenced by the type

and location of the associated video screen. However, the influence of the room boundaries and

alignment to the listening position should still be taken into account.

The

is designed to reproduce full bandwidth, full power signals and is intended to be

positioned centrally just above or below the screen. If the location of the loudspeaker results in too

much bass some adjustment of low frequency equalisation via the AV processor may be necessary.

Best results from the

are likely to be gained if it is directly coupled to the floor via a rigid,

spiked stand. If the screen stand is however also to carry the

it is advisable to decouple it

from the screen with the supplied adhesive rubber feet so that vibration from the speaker does not

disturb the picture.

The

is magnetically shielded. However, the extreme sensitivity of some CRT tubes to low

levels of magnetic flux may mean that, in rare cases, the shielding may not be sufficient. Should your

screen suffer picture distortion caused by the proximity of a centre speaker contact your dealer or

installer for advice.

Loudspeakers, like many hi-fi components, will take time to stabilise and “run-in” and can be

expected to improve with use even over a period of weeks. For this reason it is prudent not to finalise

positioning until it has been operating for at least one week.

n-CENT Specification

50Hz - 20kHz

87dB/1W/1m

120 Watts (music programme)

6Ω (nominal)

160 x 430 x 300mm

Weight (unpacked):

10.0kg

Cherry, Maple, Black Lacquer

10.2 Connection

If the

is to be used with Naim amplification, Naim

loudspeaker cable will produce the best results and is necessary

with some amplifiers. Cable length should be between 3.5

metres and 20 metres (11.5ft and 66ft). Your local retailer will

be able to make up cables of the appropriate length.

Connect the loudspeaker cables with their custom Naim plugs to

the input sockets located on the rear of the enclosure. Ensure

that the positive plug - identified by a rib on the side of the cable

and a tag marked “pos” on the side of the connector body - is

inserted to the red input socket.

n-SUB

11 Introduction

Naim loudspeakers are precision acoustic instruments that will only achieve optimal

performance if installed and set up carefully. Please read these instructions before

installing and using the n-SUB. Please also retain the packaging. The n-SUB is very

heavy and care should be taken when lifting or moving it. Do not connect the n-SUB

to the mains wall socket until all other connections are made. Take great care when

moving and handling the n-SUB that cables are not damaged by its floor spikes.

The

is an active sub-woofer primarily intended to be used in conjunction with

and the

in home theatre and multi-channel audio applications. The

can also be used however

with

in a stereo satellite/sub-woofer (2.1) loudspeaker system.

A variety of

set up parameters can be defined and stored as presets. These enable

performance to be adjusted for different programme material types, personal preferences and

listening levels etc (i.e Stereo or AV setups). Up to six presets can be stored. Preset selection or real-

time adjustment of

can be carried out from either its control panel or the remote handset.

Loudspeakers, like many hi-fi components, will take time to stabilise and “run-in” and can be

expected to improve with use even over a period of weeks. For this reason it is prudent not to finalise

positioning until they have been operating for at least one week.

11.1 n-SUB Installation

11.1.1 n-SUB Positioning

In principle there is significant freedom of position of a sub-

woofer in a listening room. In practice, however, the performance

of the

will be fundamentally influenced by the room and

position in which it is located. Small changes of position, or the

resonant characteristics of items in the immediate vicinity of the

can significantly influence its performance

Initially choose a site for the

along one of the walls of the

listening room well away, but not equi-distant, from the corners.

It is not necessary that the

be positioned along the same

wall as the main loudspeakers. Locate the

such that its

control panel is facing out from the wall. Leave a gap of between

100mm (4”) and 150mm (6”) between the rear panel (driver

panel) and the wall. Chose a solid, rather than a partition, wall

and keep the

clear of any significant resonant objects -

large furniture panels, heating radiators, etc.

The

is not magnetically shielded and should be kept

a minimum of 2m away from CRT displays (plasma, LCD or

DLP displays are not affected). Should a display suffer picture

distortion caused by the proximity of the

contact your

dealer or installer for advice.

The

amplifier is cooled by air flow entering through

perforations in its underside and exiting through a vent above the

display window. This air flow must not be restricted.

A cable clamp is supplied in the pack containing this manual

intended to hold the mains cable in position and to help prevent

it from being damaged by floor spikes. It can be fitted as

appropriate in any of the 3 positions shown in Diagram 11.9

depending on the positioning of the

relative to the wall

and mains socket.

11.1.2 n-SUB Floor Spikes

With the initial position decided begin

installation by

fitting the four

floor spikes

and

to the underside of

the enclosure. Adjust the spike length to hold the

at least

20mm above the floor covering

If you intend to install the n-SUB on a non-carpeted floor the

spikes should be used in conjunction with Naim Floor Protectors

(see Diagram 11.8). Your retailer or distributor will be able to supply

Floor Protectors.

With the floor spikes fitted, but not tightened, place the

on the floor in the intended position. Adjust the spikes so that

the

does not rock and is level. Tighten each lock-nut

using a 10mm spanner.

With thick carpet and underlay it can be difficult to ensure

that the spikes are resting on the floor. Small slits cut into the carpet

once the loudspeaker position is finalised will help.

11.2 n-SUB Connections

The

carries a comprehensive set of signal and control

connections appropriate for integration with a variety of system

types and installations. The connection sockets (and mains

power input socket) can all be found on the underside of the

enclosure and are illustrated in Diagram 11.6. The

can be

turned up-side-down to aid access to the sockets.

ALL CONNECTIONS ARE MADE AND IT IS RETURNED TO AN

THE N-SUB TO THE UPRIGHT POSITION THAT CABLES ARE NOT

11.2.1 n-SUB Inputs

The

provides one mono and one stereo line level input on

RCA Phono sockets along with one stereo set of “speaker-level”

4mm input sockets.

The mono line level input should be used for AV systems where

an AV processor provides a mono sub-woofer (LFE) output.

The stereo line level input should be used when only an auxiliary

stereo output is available from, for example, a preamplifier. The

stereo channels are combined to mono within the

.

Do not use an amplifier “tape output” to connect to Input

2. The volume level from tape outputs does not vary with volume

control position.

n-SUB

A special 4-pin DIN to stereo RCA Phono Plug lead is required

for connection to Naim preamplifiers (usually via the preamplifier

power supply). It incorporates resistors in the signal path to

protect the preamplifier from the high capacitance inherent in the

necessarily long lead.

using Naim speaker plugs

via cables connected to the main (front left and right) speaker

terminals. The stereo channels are combined to mono within

the

Speaker terminal “piggy-back” connectors and

appropriate made-up cables will be available from your local

Naim dealer or distributor.

The decision to use either the line level or speaker level

inputs when the n-SUB is not connected via an AV decoder can be

made on the grounds of sound quality. It is impossible to predict

which option will sound best in a particular system and installation,

however the speaker level option, by virtue of higher signal levels

being more robust over long lead lengths, is potentially superior.

Input sockets can be selected either directly from the

control panel or included in a setup preset. See Section 11.3.

An RC5 control input is also provided on the

connection

panel. This input can be used for wired remote control if the

is to be used out of line-of-sight in an installed audio

system or if the n-SUB is one of a daisy-chained group.

11.2.2 n-SUB Outputs

The

is fitted with a mono signal output and an RC5

control output, both on RCA Phono sockets. These output

sockets are intended to enable “daisy-chaining” of one or more

in systems where multiple sub-woofers are required.

If these sockets are used take care to ensure that they are

connected correctly.

11.2.3 Earth Terminal

An external earth (ground) terminal and earth selection switch

are fitted to the underside of the

. Use of the earth

terminal may help alleviate audible hum from earth loops by

disconnecting the signal and mains earths. If hum is a problem,

connect the earth terminal with a single cable to the preamplifier

earth terminal and move the switch to the “External” position.

Do not switch the earth selection to External without an

external earth connected.

11.3 n-SUB Configuration and Operation

With all input and output connections made and the

positioned appropriately it is ready for configuration and

operation.

The n-SUB may be configured and operated from either its

control panel or from the remote handset, however the handset

provides enhanced functionality and direct access to gain and

display control.

To select and adjust a parameter use the handset

keys (control panel:

) to select. Once a parameter

is selected use the handset

or

keys (control panel

or

buttons) to adjust.

The handset and control panel

function mutes and restores

the

output.

The handset

gain

and

gain

keys provide direct control of

volume level. The handset

key switches the control

panel display on and off. The handset

key scrolls through

and displays the parameter settings for the currently selected

preset.

Multiple daisy-chained n-SUBs should be initially configured

from each control panel rather than from the remote handset. This

removes the possibility of handset commands intended for one n-

SUB changing a previously defined configuration for another. Section

11.4.5 covers the configuration of multiple n-SUBs, and the use of

Lock Mode, in more detail.

11.3.1 n-SUB Presets

When first switched on from the control panel power button the

display will show

and the

mode indicator will illuminate.

indicates that preset P1 is loaded.

If the n-SUB has not been previously used, all presets will

contain the same default settings and values. If the n-SUB has

been previously used some values and settings may vary from the

defaults. To restore the factory defaults across all presets, press and

hold the handset disp key for six seconds or switch the n-SUB off

and then on while pressing the control panel mute button.

presets contains a value or setting for each of the six

variable parameters. These are

gain

, low pass filter frequency

freq

),

,

,

, and

. The function of each is

described in Section 11.4.1 to Section 11.4.6.

To save a configuration preset once each parameter has been

adjusted use the handset

or

keys (control

panel:

) to select

save,

then use the handset

or

keys (control panel:

or

buttons) to select a preset

number (

to

). Save the preset by pressing the handset

save

or

keys (control panel:

button). If the preset

selected as the save location is the currently selected one it will

be displayed with dashes either side (

).

The handset save key can be used at any time to modify an

existing preset following a parameter adjustment. Simply press and

hold save.

To reset the currently selected preset to the factory default

parameter values select

save

as described above and press and

hold the handset

key for six seconds.

11.4 n-SUB Configuration Parameters

sets the volume level of the

. The adjustment range

is

to

and the factory default setting is

. See Section

11.5 for further guidance on setting this parameter.

sets the upper filter frequency. This should generally be set

as appropriate for the type of system and satellite speakers the

is to be integrated with. The adjustment range is

to

and the factory default setting is

. See Section 11.5

for further guidance on setting this parameter.

switches (inverts) the acoustic phase (polarity) of the

. Inverting phase can be of value when deciding on the

optimum position for a sub-woofer. It is worth experimenting with

phase inversion before ruling out a particular sub-woofer position

for reasons of poor integration with the satellite speakers. The

options are

yes

or

and the factory default setting is

.

selects one of the three

inputs described in Section

11.2.1. The options are AV,

AMP

or

AUX

and the factory default

setting is

.

Lock mode prevents

parameters other than gain, mute

and preset selection from being changed, thus ensuring that

inadvertent adjustments are not made and that daisy-chained

arrays remain synchronised.

To lock a single

use the handset

or

keys (control panel:

) to select lock followed by the

handset

or

keys (control panel:

or

buttons)

to select

. When lock mode is active the lock indicator remains

illuminated.

Settings cannot be adjusted from the control panel when lock

mode is operational.

With multiple

, lock mode must be configured from the

control panel for each

in turn. Use the control panel

button to select

, followed by the

or

buttons

to select a different lock number, from

to

for each

.

While there is no technical limit on the number of n-SUBs

that can be daisy-chained, six is the recommended practical

maximum.

Once an

has been allocated a lock number it can be

temporarily unlocked for adjustment (and re-locked) by pressing

and holding the appropriate handset

key (control panel:

press and hold the

button). The lock indicator will flash to

indicate that it is temporarily unlocked.

Individual locking and unlocking enables subsequent

adjustments to specific daisy-chained n-SUBs to be made without

changing the settings of the other n-SUBs.

To permanently unlock an

it must first be temporarily

unlocked, then the handset

or

keys (control

panel:

) used to select

, followed by the handset

or

keys (control panel:

or

buttons) to select

.

A three character alpha-numeric display label can be defined for

each

preset. Use the handset

keys

(control panel:

) to select

followed by the handset

key to select the character position and the

or

keys (control panel:

or

buttons) to select an alpha-

numeric character.

11.5 n-SUB Gain, Filter Frequency and Polarity

Setting

gain

freq

) parameters

will require some careful listening and experimentation if

optimum subjective performance is to be achieved. Try to put

yourself in the position of the film sound designer or music mix

engineer and aim for a sound that is consistent, well balanced

and free of undue bass or midrange emphasis. It may be useful

to listen with and without the

by using its

function.

Don’t use the mute function rapidly and repeatedly in order

to judge the n-SUB’s contribution to the sound. Listen to a few

minutes of material with the n-SUB operating and then repeat

the same few minutes with it muted. Use a variety of programme

material but make sure it has an adequate level of low bass.

11.5.1 AV System

When connected to an AV processor, such as the Naim AV2,

the

filter

should always be set at its maximum -

.

This is because the processor’s sub-woofer (LFE) channel itself

incorporates low pass filtering.

gain

should be set such

that low frequency effects do not dominate but integrate within

the context of the film. Only use the

function if it proves

difficult to achieve a satisfactory result through adjusting the

gain

. If the

function still results in no improvement, the

should be moved to an alternative location in the room.

Ensure that the processor’s “midnight” or “bass mix”

functions are not operational when setting up the n-SUB.

Different gain settings for music only and audio-visual

programme material via an AV processor may be appropriate. Use

the n-SUB’s preset feature to save appropriate settings.

11.5.2 n-SUB with n-SATS - Stereo Music System

For

integration with one pair of

in a conventional

stereo audio system, initially set the

filter

to

(the default

value). Optimum

gain

will depend on the room acoustic

and the position of the speakers within it. An

close to the

listening position should, in theory, require less gain, however,

if close to the listening position means the

is relatively

distant from the walls, increased gain will likely be required.

Aim to set the

gain

such that bass elements of the music are

properly integrated. If bass subjectively draws attention to itself,

the

gain is probably too high. Only use the

s

function if it proves difficult to achieve a satisfactory result

through adjusting the

gain

. If the

function still results in

no improvement the

should be moved to an alternative

location in the room.

Once the

gain

is set, it may be worthwhile experimenting with

small changes in

filter frequency

to fine tune the integration

between

and

11.5.3 n-SUB with alternative speakers - Stereo Music

System

Larger satellite loudspeakers than the

will most likely

require the

filter

to be reduced. For medium sized stand-

mount loudspeakers begin with a setting of around

. For

floor-stand loudspeakers initially set the

filter

to around

.

and

should be set as described above.

n-SUB

11.8 Floor Protectors

11.6 n-SUB Connection Panel

The RS232 sockets

enable connection to custom

install RS232 controllers.

Please contact your dealer for

the appropriate connection

cables. These sockets are not

intended for direct connection

to computer networks.

n-SUB Specification

2 x line level, 1 x speaker level

20Hz - 250Hz

350 Watts

385 x 385 x 393mm

Weight (unpacked):

29.6kg

Cherry, Maple, Black Lacquer

100-120V or 220-240V, 50/60Hz

n-SUB

11.7 n-SUB Control Panel

11.9 n-SUB Cable Clamp

from side

from side

12 Declaration of conformity to appropriate standards

Manufacturer Naim Audio Limited, Southampton Road, Salisbury, England, SP1 2LN
Products SL2, allæ, Ariva, axent, axess, n-SATS, n-CENT, n-SUB
Safety EN 60065

EMC

Emissions Tested to: EN 55013 - Sound and television broadcast receivers and associated equipment

BS EN 61000-3-2: 2001 - Limits for harmonic current emissions (equipment input currents up to and
including 16 A per phase)

Immunity Tested to: EN55020 - Electromagnetic immunity of broadcast receivers and associated equipment

In accordance with: CISPR 16-1 - Radio disturbance and immunity measuring apparatus

CISPR 16-2 Methods of measurement of disturbances and immunity

IEC 801-2 8kV (air gap) 4kV (contact) (performance criterion B)

IEC 801-3 3V/m 20dB (performance criterion A)

IEC 801-4 1kV (AC lines) 0.5kV (signal lines) (performance criterion B)

Naim Audio Limited, Southampton Road, Salisbury, England SP1 2LN

Telephone: [phone] Fax: [phone] www.naim-audio.com

Part No. OWMSP 12-001-0033

Drawing No. NA401001-400/2