Wharfedale Opus 2 Instruction Manual

Opus²

USER MANUAL

Opus² - M1

Opus² - M2

Opus² - Stand

Opus² - 1

Opus² - 2

Opus² - 3

Opus² - AV System

Opus² - Tri Centre

Wharfedale Loudspeakers Ltd

IAG House, Sovereign Court,

Ermine Business Park,

Huntingdon PE29 6XU. England.

Tel : [phone]

Fax : [phone]

www.wharfedale.co.uk

Opus² - Tri Surround

Opus² - SW250 Subwoofer

Opus² - SW300 Subwoofer

Opus² - SW380 Subwoofer

Opus² Opus²

User Cautions

CAUTION!

RISK OF ELECTRIC SHOCK

DO NOT OPEN

TO REDUCE THERISKOF ELECTRIC SHOCK

DO NOT REMOVE COVER (ORBACK)

NO USER-REMOVEABLE PARTSINSIDE

REFER SERVICING TOQUALIFIED PERSONNEL

ADVERTISSEMENT: RISQUE DE CHOC ELECTRIQUE- NE PAS OUVRIR

IMPORTANTSAFETY INFORMATION

Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatusnear water.
Clean only with dry cloth.
Do not block any ventilationopenings.
Install in accordance with themanufacturer's instructions.
Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including amplifiers) that
produce heat.
Do not defeat the safety purpose of the polarized or grounding
type plug. A polarized plug has two blades with one wider than
the other. A grounding type plug has two blades and a third
grounding prong. The wider blade or the third prong are provided
for your safety. If the provided plug does not fit into your outlet,
consult an electricianfor replacement ofthe obsolete outlet.
Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles, and the point
where they exit from theapparatus.
Use only attachments/accessories specified by the
manufacturer.

Use only with a cart, stand, tripod, bracket, or
table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use
caution when moving the cart/apparatus

combination to avoid injury from tip-over.
Unplug this apparatus during lightning storms or when unused
for long periods of time.
Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way,
such as power-supply cord or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus, the apparatus
has been exposed to rain or moisture, does not operate
normally, or has been dropped.

Warning:

Toreducetheriskoffireorelectricalshock,donotexpose this
product to rain or moisture. The product must not be exposed to
drippingandsplashingandnoobjectfilledwithliquids-suchasavase
offlowers-shouldbeplacedontheproduct.
No naked flame sources such as candles should be placed on
the product.

Caution:

the manufacturer could void the user's authority to operate this
device.

Warning Opus² Subwoofers:

Changes or modifications not expressly approved by

The mains power switch for this

This symbol indicates that there are
important operating and maintenance
instructions in the literature accompanying
this unit.

This symbol indicates that dangerous
voltage constituting a risk of electric shock
is present within this unit.

appliance is located on therear panel. Topermit free access tothis
switch, the apparatus must be located in an open area without
any obstructions.

NOTE: Opus² Subwoofers:

This equipment has been tested and found to comply 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
energy 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 the equipment off
and on, the user is encouraged to try to correct the interference by
one or more of thefollowing measures:

Reorient or relocate the receiving antenna.

!

Increase the separationbetween the equipmentand receiver.

!

Connect the equipment into an outlet on a circuit different

!

from that to which thereceiver is connected.
Consult the dealer or an experienced radio/TV technician for

!

help.

IMPORTANTNOTICE TO UK USERS

The power cord on your subwoofer may be supplied with a plug
incorporating a fuse, the value of which is indicated on the pin
face of the plug. Should the fuse need to be replaced, an ASTA or
BSI approved BS1362 fuse must be used of the same rating. If
the plug is cut off it must NOT be re-used. Dispose of any such
plug safely. There is a danger of electric shock if a cut-off plug is
inserted intoa mains socket.

Connecting a Mains Plug

The wires in the mains lead are coloured in accordance with the
code: Blue: NEUTRAL, Brown:
LIVE: Green/Yellow: Earth.
As these colours may not
correspond to the coloured
markings identifying the terminals
in your plug, proceed as follows:
The BLUE wire must be connected
to the terminal marked with the letter N or coloured BLUE or
BLACK. The BROWN wire must be connected to the terminal
marked with the letter L or coloured BROWN or RED. The
GREEN/YELLOW wire must be connected to the terminal marked
with the letter E orcoloured GREEN or marked with the symbol

GREEN

&

YELLOW
(EARTH)

BLUE

(NEUTRAL)

FUSE

BROWN

(LIVE)

1

Opus²

Conclusion

Opus²

Quality Management

Your Opus loudspeakers have been constructed to the highest standards of quality throughout. The acoustic components and

the whole system have been manufactured to very tight tolerances of +/- 1 decibel of sound pressure level for each driver

throughout the operational range of the unit.

All drive unit components are serially numbered and test compared to golden reference originals retained in our factory quality

control department. This scrupulous attention to detail enables us to ensure not only that all Opus² loudspeakers exactly

replicate the performance characteristics of our reference test samples, it also enables us to give a extended guarantee of

identical replacement parts should they ever be required.

A certificate of conformance to the original prototype specification, confirmed by the Opus designer and engineering director is

included in this pack.

Servicing

Servicing of Opus products should only be carried out by authorised service agents. If service is required the equipment should

be returned, securely packaged, preferably using original packaging, to your dealer.

In the UK equipment may be returned to the IAG Service Centre. In the USA equipment may be returned to the Service address

shown on this page. Always telephone before returning any equipment. A note should be enclosed giving your name, address,

telephone number, and a brief description of the reason for return.

If you require Service outside the Warranty period, do not hesitate to contact your dealer.

Contents

Before You Begin

Getting Started

Setting Up Your Loudspeaker

Setting Up Your Subwoofer

About Your Loudspeaker

Quality Assurance

Specifications

Within This Pack

Certificate of Quality Assurance

White Cotton Gloves

Service Addresses

For technical support, servicing or product queries and information please contact either your local retailer or the offices below.

UK

Wharfedale International Ltd.,

Unit 4

St Margaret’s Way

Stukeley Meadows Industrial Estate

Huntingdon

Cambs

PE29 6EB

England

Tel:[phone]

Fax: [phone]

Produced after 13th August 2005.

Waste electrical products should not be disposed of with

household waste. Please recycle wherefacilities exist.

Check with your Local Authority or retailerfor recycling advice.

USA

IAG America, Inc.

8440 154th Avenue NE

Redmond, Washington 98052

USA

Tel: [phone]

Fax: [phone]

Asia

IAG

Room 2310 - 2311 Press Building,

Shennan Road C,

Shenzhen,

China

Tel: [phone]

Fax: [phone]

Accessories

36

1

Opus²

Before You Begin...

Opus²Opus²

Measurement and Analysis-2

Before connecting and using your loudspeakers, please bear the following points in mind:

Switch off the amplifier and all sources before making connections to your sound system.

#

When you switch on the system or change sources, set the volume control to minimum

and turn up the level gradually.

The position of your Volume Control is NOT a reliable guide as to the maximum capabilities of

#

your sound system. Playing the system with extreme settings of volume and tone controlsmay

damage the amplifier and loudspeakers.

Do not connect loudspeaker terminalsto the mains supply.

#

Ensure that your loudspeakers are correctly wired and are in phase.Do not subject your

#

loudspeakers to excessive cold, heator sunlight.

WARNING: To reduce the risk of fire or electrical shock do not expose this product to rain or

#

moisture. The product must not be exposed to dripping and splashing and no object filled with

liquids - such as avase of flowers - should be placed on the product.

No naked flame sources - such as candles - must be placed on the product.Do not place heavy

#

objects on top of loudspeaker cabinets. If you play the loudspeakers with the grilles removed

be careful to protect thedrive units from children and pets.

Do not use makeshift stands. Always fit a manufacturer's approved stand using the

#

instructions and the fixings provided.Your dealer will advise you.

Very low distortion over the vocal bandwidth at 100dB

Opus² -Tri-Centre: Distortion

Optimised linear on-wall resopnse

Opus² -AvSat: Frequency ResponseOpus² -AvSat: Harmonic Distortion

Low distortion over the full spectrum at 100dB at 1 m.

Superb, wide, even dispersion for larger listening areas

Opus² -M1: Horizontal Directivity

Opus² - Tri-Surround: Horizontal Directivity

Superb, level and even on-wall response

Do not attempt to dismantle the loudspeaker. There are no user serviceable parts inside and

#

you will invalidate the warranty.

All the Front and Centre loudspeakers are screened, but you should site front loudspeakers at

#

least 0.5 m away from TV sets and magnetic storage media. The Opus² Tri-Centre and the

AvCentre loudspeakers may safely be operated closeto a TV set.

When connecting your loudspeakers, do not run cable across areas of open floor where they

#

may be a source ofdanger. Run them safely, around room boundaries if necessary.

Optimised filters blend seamlessly with front speakers

Opus² -SW250: Filter Curves

Opus² -AvCentre: Near-Wall Response

Low subwoofer distortion

Opus² -SW250: 2nd and 3rd HD

2

35

Opus²

Opus²

Measurement and Analysis-1

These actual test plots exemplify the stringent standards of acoustical measurement and performance in Opus² loudspeakers.

Remarkably similar dispersion oh both axes due to our unique drive unit configuration with central tweeter placement

Opus² -M1: Vertical Directivity

Very smooth response near boundary (200mm)

Opus² -M2: Near-Wall Response

Impressive decay time and absence of resonances

Opus² -M1: Horizontal Directivity

Very linear dispersion to 12 kHz over a 90 degree axis

Opus² -1: Axial Response 0;30,45º

Ultra-linear tweeter response

Safely Unpacking Your Loudspeakers

Opus speakers are heavy. Take care when

removing them from their packaging. Enlist the

help of a friend if necessary

Always take care when

lifting heavy objects. Lift

the speakers out by their

sides.

Unpacking the Opus² 1,2 &3

If your floor is at all vulnerable, protect the floor surface with a cloth or towel.
Carefully remove each loudspeaker from its packing carton. Be especially careful when
removing the polythene bag. The speakers come with the plinth complete and already
fitted. The carton top says, “Open other end”. So you:
– Open the bottom
– Remove polystyrene
– Lift the grille carton out
– Open bag containing speaker
– Tape the carton flaps back
– Turn over carton with loudspeaker still inside
– Lift carton off, leaving loudspeaker standing on the floor
– Unwrap the grilles and place them on the loudspeakers.
– Be careful not to damage soft floor surfaces with spikes

34

Opus² -1: Spectral Decay

Linear studio standard frequency response

Opus² -3: Frequency Response

Opus² -2: Frequency ResponseOpus² -3: 2nd and 3rd HD

Very low measured distortion at 100dB at 1 metre

Unpacking the Opus² M1, M2, AV, Tri-Centre & Tri-Surround

Lift out the polystyrene packing pieces and unpack the loudspeakers being careful not to
lift the loudspeakers out with the polythene bags. Remove the polythene bags.
The AV speakers are packed as a system with two AVS satellites and one AVC centre
loudspeaker.

Unpacking the Opus² Stands

Before proceeding, protect the floor surface with a cloth or towel. The stands are packed
facing each other. Lift each stand out from the packing and then invert it so that the
spikes are on the floor.

Unpacking the Opus² SW250,300 and 380 Subwoofers

Open the carton and remove all the top packing pieces. Lift the subwoofer out taking
care not to damage the cabinet. When lifting the unit from the carton support it from the
bottom. DO NOT attempt to lift the subwoofer out of the carton using the polythene bag.
The unit is heavy; if you cannot manage it easily, get someone to assist you.

If possible, keep the packaging in

case you need to move or return

your speakers. If you dispose of the

packing, do so with regard to all

recycling regulations in your area.

3

Opus²

Opus²Opus²

What's In The Box?

Crossover Network Topology -2

Opus² -M1, M2, Stands

User Pack User Pack User Pack

Accessories: Accessories:

Opus² - M1, M2

• One Pair of Gloves

• 8 Rubber Feet

Opus² - Stands

• Sof t Floor Spike Seats (2 Sets)

• One Pair of Gloves

Accessories:

• One Pair of Gloves

• 9 Screw headers

• 3 Security Ties

• 3 Tie Screws & Washers

• 2 "L" Brackets

• 2 Bracket Knobs

Opus² -1, 2, 3Opus² -AV System

• Two Pairs of Gloves

• Soft Floor Spike Seats (1 Set)

• One Pair of Bi-Wire Likks

4

33

Opus²

Crossover Network Topology -1

Opus²

Opus² - Tri-Centre

User Pack User Pack User Pack

Accessories: Accessories:

• One Pair of Gloves

• 4 Rubber Feet

• One Pair of Bi-Wire Links

Opus² - Tri-Surround

Accessories:

• One Pair of Gloves

• 4 Screw Headers

• 2 Security Ties,

• 2 Tie Screws and Washers

Opus² - Subwoofers

• Two Pairs of Gloves

Soft Floor Spike Seats (4)

•

• Remote Control Handset

• 2 Batteries

• Power Cord

32

5

Opus²

Opus²Opus²

Subwoofer Drive Unit Specifications

Setting Up Your Loudspeakers

As we design and manufacture our own drive units entirely in-house, we are able to design the perfect driver for each situation.

Our unique ‘Tri-lam’ technology produces drivers capable of delivering spectacular bass performance with distortion lower than

any other drivers of similar size.

The aim of any large format driver is to have a linear pistonic motion with the minimum cone distortion and break-up possible,

even when driven extremely hard. Our ‘Tri-Lam cone achieves this using a combination of Carbon fibre and glass fibre.

The cone material is a composite construction comprising of a hydraulically moulded and thermoset lamination of three layers.

The inner layer is bi-directional carbon weave, the outer two layers are a bi-directional glass fibre weave. In addition, the outer

rim includes ‘rim-edge stiffening’ to further reinforce the resulting cone.

The result is a cone that is light yet incredibly strong, ensuring very low energy losses, even at extreme levels, and without the

‘muddy’ delays associated with lesser cone materials.

Parameter

Opus² - SW 250 Opus² - SW 300 Opus² - SW 380

Frame material

Cone & dome material

Surround

Spiders

Coil size & type

Magnet weight

Gap flux density

Top plate thickness

Optimum working range

Thiele Small parameters

Effective cone diameter

Re

Fs

Qms

Qes

Qts

Mms

Cms

Vas

BL

Aluminium

Tri-lam glass/carbon

srbpSingle roll

Single

51.3mm Al: 4 Layer

2380gm

0.77T

8mm

30Hz- 800Hz

250 mm

6.2 Ω

30Hz

5.94

0.39

0.36

100gm

0.29mm/N

39L

17.24N/A

Aluminium

Tri-lam glass/carbon

srbpSingle roll

Single

51.3mm Al: 4 Layer

2420gm

1.1T

8mm

31Hz- 800Hz

300 mm

6.2 Ω

31Hz

4.79

0.45

0.41

76.9gm

0.33mm/N

140.4L

14.67N/A

Aluminium

Tri-lam glass/carbon

srbpSingle roll

Dual

51.3mm Al: 4 Layer

2720gm

1.1T

10mm

35Hz- 500Hz

380 mm

6.2 Ω

35Hz

6.04

0.57

0.52

185gm

0.11mm/N

112L

21N/A

6

31

Opus²

Opus²

Subwoofer Specifications

Opus² - SW 250 Opus² - SW 300 Opus² - SW 380Parameter

Transducer Complement

Bass driver

Input Impedance

Frequency response (boundary)

Avg. max output @ 1m

Low pass filter range

Amplifier Output Power (RMS)

Line Input sensitivity (150W output)

Enclosure type

Cabinet-Wall Offset

Construction material

Finish

Overall dimensionsHxWxD

Net Weight

The SW series of subwoofers offers a level of performance previously

unheard of in their class.

Revolutionary drive units, amplifier modules and filter stages feature on

every model. They strike the perfect balance between power and sound

quality, offering remarkable sound pressure levels, yet retaining enough

control to satisfy the most discerning audiophile and music lover. This is

possible only through the use of space-age materials and cutting-edge

technology in our drive units.

Solid, well-engineered power amplifiers, dedicated to the production of low

frequency energy are used across the range. Power is targeted specifically at

the most important section of the bass spectrum , with very little loss and a

controlled roll-off allowing for superb integration with all hi-fi and home

cinema systems.

One

10" 250 mm

10kΩ

30 - 100 Hz

113db

35 - 85Hz in 10 Hz steps

250 Watts

325mv

sealed

60 mm

25mm MDF

Selected wood veneers in high gloss piano lacquer finish to match Opus² loudspeakers

420 x 420 x 375 mm

27 kg

One

12" 300mm

10kΩ

25-95Hz

114db

35 - 85hz in 10 Hz steps

300 Watts

325mv

sealed

80 mm

25mm MDF

520 x 390 x 450 mm

29.5 kg

One

15" 380mm

10kΩ

25-95Hz

120db

35 - 85Hz in 10 Hz steps

600 Watts

325mv

sealed

80 mm

25mm MDF

570 x 465 x 570 mm

40.5 kg

Preparing Your Loudspeakers

Adjusting Spikes

Floor standing Opus² loudspeakers, the Opus² subwoofers and the
loudspeaker stand come pre-fitted with the plinth and spikes.

Adjusting the Front Spikes:

of the spike. Adjust the spike in and out as required. Do not re-tighten
the spikes at this time.

Adjusting the Rear Spikes: Slacken the retaining collar at the bottom of
the spike. locking knob on the top.
down to level.

When the loudspeakers are level:

all the collars. Make sure the spikes are fully tightened.

If you are using the stands to support the M1 or M2, we suggest
you level the stand you place the speakers on them.

WARNING:

penetrate softer floor materials over extended periods. Spike seats are
supplied to protect sensitive floors and floor coverings.

Release the Turn spike out and

Opus²

before

Opus speakers and stands are heavy and the spikes could

Choosing Loudspeaker Cable

Specialist audio cable usually offers better performance than general
purpose ‘bell’ or ‘zip’ wire.

Choose a cable of suitable diameter – cable that is too thin will limit
the dynamics of the sound and may impair the bass response. Audio
cable is polarised, with two cores of different colours, or often a raised
rib or coloured tracer in the case of twin cable.

Before you purchase your cable, we suggest that you give careful
thought to the positioning of your loudspeakers. This is especially the
case if you are bi- or tri-wiring your loudspeakers.

Cable lengths to loudspeaker pairs should be the same for left and right
channels in order to equalise the signal transmission. Allow some slack
in your speaker cables so you can alter their position to best advantage,
but do not have your cables over-long.

Preparing Loudspeaker Cable

Split the twin cores to a depth of about 40mm. Carefully strip the
insulation from each end, leaving about 10mm of bare wire. If the
cable is stranded, lightly twist to gather any loose strands.

Slacken the retaining collar at the bottom

Re-lock top knob and then tighten

Front Spike

Bottom Collar

Spike

Rear Spike

Top Knob

Bottom Collar

Spike

Using the Spike Seat

30

The filter section controls the integration with your main speakers and

ensures the transition is seamless. Designed using six discrete circuits,

signal purity is regarded as paramount. Each circuit has a different crossover

frequency (35 Hz to 85 Hz in 10 Hz steps). The filter is 24 dB/octave. In

each model it is possible to switch off all filters and allow the AV processor to control the effective frequency range of the subwoofer.

This is preferable in high-end systems.

Finally, the Tri-lam cone is revolutionar y in terms of technology and performance. Detailed on the next page, it is one of the most

advanced cones ever seen in a moving-coil loudspeaker, coupled with an elongated voice coil with a maximum excursion of 24mm.

10mm

40mm

7

Opus²

Opus²Opus²

Connections And Terminals

Crossover Networks

Opus² -1,2,3 and Tri-Centreiloudspeakers use a specially

designed tr -wireable crossover panel with six terminal
binding posts. This facilitates standard single wiring,
advanced bi-wiring, and for the no-compromise audiophile,
tri-wiring. Follow the drawing carefully to see the correct
orientation of the loudspeaker terminals. The upper
terminals connect to the treble unit, the middle pair to the
mid-range and the lower pair to the bass units. As
supplied, the treble terminal pair is connected to the mid­range pair and bass terminal pair via removable metal
straps. These should be left in place for standard single
cable installations. A second bi-wiring strap is provided
which connects the bass and midrange terminal pairs
leaving the treble pair to be separately wired. Refer to the
diagrams opposite

Opus² -M1 and M2

essentially similar to the tri-wiring panel above but with
four terminal binding posts. This facilitates standard single
wiring, and advanced bi-wiring. Follow the drawing
carefully to see the correct orientation of the loudspeaker
terminals. The upper terminals connect to the midrange
and treble units, the lower pair to the bass unit. Although
the loudspeakers are full three-way designs, bi-wiring
terminals perform admirably in these loudspeakers'
intended applications without the added complexity and
cost of a full tri-wiring configuration.

The terminal straps are left and right handed for
identification.

The Opus² -Tri-surround, AVS and AVC

a bi-wiring panel as shown on the right. These have the
treble and bass terminal pairs in a vertical configuration
with and again these are connected by removable straps to
facilitate single and bi-wiring. Follow the drawing carefully
to see the correct orientation of the loudspeaker terminals.
The upper terminals connect to the treble and midrange
units, the lower pair to the bass unit.

Connecting a Terminal

Unscrew the terminal. Insert the bare end of the cable into
the hole in the base of the terminal. Tighten securely.

When connecting terminals make sure you leave no
strands of bare wire that can short across to adjacent
terminals.

As an alternative to bare wire you can use specialist spade
connectors. Your Opus dealer will be pleased to advise
you.

loudspeakers use a bi-wiring panel

loudspeakers use

Single
Wiring

Single
Wiring

Single Wiring Bi- Wiring

Bi- Wiring

Tri- Wiring

Bi­Wiring

Midrange Specifications

Tweeter Specifications

Crossover Specifications

Part number

Dome material & size

Coil size & type

Magnet d1 x d2 x h

Magnet weight

SPL 1w @ 1m

Frequency range -3dB

Distortion at 100dB @ 1m

Part number

Dome material & size

Coil size & type

Magnet d1 x h

Magnet weight

SPL 1w @ 1m

Frequency range -3dB

Upper frequency limit -

Crossover sections

Type

Wiring

Connections

Crossover points at -6dB

Bass

mid

Tweeter

0775 & 0776

75mm textile

75mm aluminium

70x32x15

248gm

93dB

500Hz

Fs

400Hz–5kHz

typically < 1%

0373, 0374, 0375, 0368

25mm textile

25mm aluminium

25.4 x 4mm Neodynium

14gm

92dB & 94dB

Fs

1 kHz

800Hz–40kHz

45kHz

3 way

Butterworth

Triple Wire Plaited OFC

Amp/solder

600 & 750Hz; 900 Hz

400 & 900Hz

3000–4000Hz

3000–4000Hz

8

29

Opus²

Opus²

Bass Drive Unit Specifications

Parameter

Nominal size

Frame material

Cone & dome material

Surround

Coil size & type

Magnet weight

Gap flux density

Top plate thickness

Optimum working range
Thiele Small parameters

Effective cone diameter

Parameter

Nominal size

Frame material

Cone & dome material

Surround

Coil size & type

Magnet weight

Gap flux density

Top plate thickness

Optimum working range
Thiele Small parameters

Effective cone diameter

Opus² Tri-Centre Opus² 1Opus² M2Opus² M1 & AvOpus² Tri-Surround

170mm 6.5"

Aluminium

Tri-lam glass/carbon

srbp Single roll

25mm Al; 2 Layer

347g

0.77T

6mm

40Hz- 1000Hz

140mm

3.4Ω

64.34Hz

5.25

0.85

0.73

16.68gm

0.37mm/N

12.14L

5.21

Re

Fs

Qms

Qes

Qts

Mms

Cms

Vas

BL

170mm 6.5"

Aluminium

Tri-lam glass/carbon

srbp Single roll

25mm Al; 2 Layer

557g

0.77T

6mm

40Hz- 1000Hz

140mm

14.5Ω

52.16Hz

3.12

0.73

0.59

15.71gm

0.59mm/N

19.62L

10.09

Opus² 2 Bass Mid Opus² 3 Bass

200mm 8"

Aluminium

Woven carbon fibre

srbp Single roll

38mm Al: 2 Layer

920 g

1.1T

6mm

25Hz- 800Hz

165mm

Re

7.2Ω

Fs

34.90Hz

Qms

2.87

Qes

0.65

Qts

0.53

Mms

24.31gm

Cms

0.80mm/N

Vas

54.62L

BL

7.71t/m

Opus² 2 Bass

200mm 8"

Aluminium

Woven carbon fibre

srbp Single roll

38mm Al: 2 Layer

920g

1.1T

6mm

25Hz- 800Hz

165mm

7.2Ω

32.88Hz

2.61

0.78

0.6

25gm

0.94mm/N

59.84L

6.91t/m

170mm 6.5"

Aluminium

Tri-lam glass/carbon

srbp Single roll

25mm Al: 4 Layer

557g

0.77T

6mm

40Hz- 1000Hz

140mm

3.4Ω

37Hz

4.74

0.51

0.46

23.87gm

0.76mm/N

25.26L

6.12

Opus² 3 Bass Mid

250mm 10"

Aluminium

Woven carbon fibre

srbp Single roll

38mm Al: 2 Layer

920g

1.1T

6mm

25Hz- 500Hz

200mm

7.2Ω

51.70Hz

4.31

1.19

0.93

31.76gm

0.30mm/N

41.13L

7.91t/m

200mm 8"

Aluminium

Tri-lam glass/carbon

srbp Single roll

38mm Al; 4 Layer

920g

1.1T

6mm

25Hz- 800Hz

165mm

3.6Ω

26.20Hz

3.28

0.42

0.37

38.01gm

0.97mm/N

61.96L

7.33t/m

250mm 10"

Aluminium

Woven carbon fibre

srbp Single roll

38mm Al: 2 Layer

920g

1.1T

6mm

25Hz- 500Hz

200mm

7.2Ω

40.26Hz

4.47

1.13

0.9

33.05

0.47mm/N

65.17L

7.29t/m

200mm 8"

Aluminium

Woven carbon fibre

srbp Single roll

38mm Al: 2 Layer

920 g

1.1T

6mm

25Hz- 800Hz

165mm

3.6Ω

31.96Hz

2.93

0.4

0.35

28.11gm

0.88mm/N

56.42L

7.15t/m

Positioning Stereo Loudspeakers

The distance between the speakers should be the

same as between you and the speakers.

If the loudspeakers are placed too close to the walls the bass will increase but may be boomy and indistinct. If the loudspeakers are

placed further away from the walls, the inward angle ("toe in") may be increased by up to 40%, although this may restrict the width

of the optimum listening position. As personal taste plays a large role, experiment with different configurations and play a wide

range of programme before finalising the position of your speakers.

The table below shows the ideal

distance your model should be

from the wall

#

Opus² M1:

#

Opus² M2

#

OPus² 1 :

#

OPus² 2

#

OPus² 3

#

Opus² Subwoofers:

300mm

: 200mm

300mm

: 100mm

: 100mm

up to 100 mm

700mm

°

0

4

-

°

5

1

Opus² M1 and M2

The M1 and M2 are designed for stand mounting. The
Opus Stand has been specifically designed to optimise their
performance. As an alternative the M1 and M2 may be
wall mounted on rigid brackets or placed on rigid shelves.

Ideally the top of the speaker should be at ear level to a
seated listener. If the rear panels of the speakers are placed
close to the walls the amount of bass will be increased but
the clarity may well suffer - you should experiment until you
get the best result.

Angle speakers inwards for a more precise

stereo image

º

0

3

-

5

º

2-4 metres

See Table

28

9

Opus²

Connecting Stereo Loudspeakers -1

Opus²Opus²

Standard Loudspeaker Wiring

Choose a suitable length of twin core speaker cable for

each channel, and prepare the ends. Unscrew each

terminal a few turns.

Connect the red, positive (+) terminal of the Left

loudspeaker to the corresponding red, positive (+)

amplifier terminal. Connect the black, negative (-)

terminals similarly. Tighten the terminals securely.

Repeat this procedure for the Right Channel.

You can connect to either set of terminals.

Ensure the linking straps are in place and that all

terminals are tightened down.

Bi- Wiring

Using separate cables for treble, and bass units in a

Bi-wiring configuration reduces intermodulation effects

and improves headroom and clarity.

To Bi-wire, you will need to install two lengths of twin

core cable between the amplifier and each

loudspeaker.

Note:

Some amplifiers have two pairs of output

terminals to facilitate bi-wiring but this is not essential.

The advantages of bi-wiring are fully retained if your

amplifier has only one pair of loudspeaker terminals

per channel (as in the illustrations).

Opus² M1 and M2:

Remove the bi- wiring straps from each pair of

terminals.

Opus² 1,2,3:

Unscrew each terminal a few turns and remove the

metal tri-link straps. Use the bi-link straps (supplied in

accessories) to connect the treble and mid-range

terminals. Connect the cables between the amplifier

and the loudspeakers as indicated and re-tighten all

terminals securely.

Opus² M1 and M2

AMPLIFIER

R.SPKR

Opus² 1,2,3

AMPLIFIER

R.SPKR

Opus² M1 and M2

HF+

HF-

LF+

LF-

AMPLIFIER

R.SPKR

Opus² 1,2,3

AMPLIFIER

R.SPKR

L.SPKR

L.SPKR

L.SPKR

L.SPKR

HF+

LF+

LF-

HF-

Opus² - 3 Opus² - Tri-Centre Opus² - Tri-Surround Opus² - AvC Opus² - AvS

Four

250mm x 2

3" 75 mm textile

1" 25 mm textile

6 ohm

4.0-34

33 Hz - 43 kHz

27 Hz

45 kHz

400 mm

91 db

>3%

>1%

300 W

100 - 600 W

116 db

90º to 14 kHz

70º to 12 kHz

ported / sealed

51/22L

30 Hz

650 Hz, 3 kHz

18&34mmMDF

025123

025122

0775

0368

1210 X 315 X 440

40.0 kg

Four

170 mm x 2

3" 75 mm textile

1" 25 mm textile

6 ohm

4.5-24

75 Hz - 43 kHz

70 Hz

45 kHz

100 - 400 mm

89 db

20-200 >5%

200-45k >1%

200 W

70 - 400 W

113 db

80º to 12 kHz

30º to 12 kHz

sealed

25 L

60 Hz

900 Hz, 4 kHz

15&25mmMDF

17171

0776

0373

242 X 575 X 320

14.7 kg

Five

170 mm

3" 75 mm x 2 textile

1" 25 mm x 2 textile

6 ohm

4.0-12

60 hz - 43 khz

50 hz

45 khz

0mm

89 db

>3%

>1%

100 W

40 - 200 W

110 db

180º to 10 kHz

90º to 12 kHz

ported

12 L

60 Hz

700 Hz, 3.5 kHz

15 mm MDF

17170

0775

0375

280 X 460 X 180

10.6 kg

Three

170mm

3" 75 mm textile

1" 25 mm textile

6 ohm

4.0-18

45 Hz - 43 kHz

40 Hz

45 kHz

0mm

88 db

>3%

>1%

100 W

40 - 200 W

108 db

90º to 14 kHz

70º' to 14 kHz

sealed

9L

70 Hz

700 Hz, 4 kHz

15 mm MDF

17172

0775

0374

230 X 500 X 140

9.0 kg

Three

170mm

3" 75 mm textile

1" 25 mm textile

6 ohm

4.0-18

45 Hz - 43 kHz

40 Hz

45 kHz

0mm

88 db

>3%

>1%

100 W

40 - 200 W

108 db

90º to 14 kHz

70º' to 14 kHz

sealed

9L

70 Hz

700 Hz, 4 kHz

15 mm MDF

17172

0775

0374

500 X 230 X 140

9.0 kg

10

XX

27

Opus²

Opus²

Opus² Specifications

Transducer complement

Bass Driver Cone

Soft Dome Mid-range

Soft Dome Tweeter

Nominal impedance

Impedance variation ohms

Frequency Response +/- 3dB

LF limit -10 dB

HF limit - 10 dB

Rec.rear to wall off- set

SPL (1w @ 1m)

Distortion 20 – 600Hz 100dB @1m

600 - 50KHz

Power Handling

Continuous Programme

Recommended Amplifier Power

Max Peak SPL

Horizontal Coverage (nom.)

Vertical Coverage (nom.)

Enclosure type: Bass/Mid

Volume: Bass / Mid

System Fb

Crossover Frequencies

Construction Material

Finishes

Component Part Numbers

Bass

Bass / Mid

Midrange Dome

Tweeter

Product Dimensions (Overall)

Nett Weight

Opus² - M1 Opus² - M2 Opus² - 1 Opus² - 2Parameter

Three

170mm

3" 75mm textile

1" 25mm textile

6 Ohms

4.2-28

42 Hz - 43 khz

38 Hz

45 kHz

300 mm

87db

>3%

>1%

75 W

40 - 150 watts

106 db

90' to 14k

70'to12k

Ported

18 L

40 Hz

650 , 3 k

15&30mmMDF

Selected wood veneers in high gloss piano lacquer: Birds Eye Maple; Rosewood; Cherry; Black

17172

0775

0374

510 X 230 X 360

12.0 kg

Hz

Hz

Hz Hz

Three

200mm

3" 75mm textile

1" 25mm textile

6

Ohms

5.0-25

40 -43k

Hz Hz

36

Hz

45 k

Hz

200 mm

88db

>3%

>1%

100 W

50 - 200 watts

108 db

90'to14k

70'to12k

Ported

27 L

40

700Hz,3k

18&33mmMDF

20164

0775

0373

505 X 255 X 450

16.4 kg

Hz

Hz

Hz

Hz

Three

200 mm

3" 75 mm textile

1" 25mm textile

6 ohm

5.0-33

37hz - 43 khz

28 hz

45 Khz

300 mm

89 db

>3%

>1%

150 W

60 - 300 w

109 db

90' to 14khz

70' to 12khz

Ported / Sealed

33L/10L

35 Hz

650 Hz , 3 kHz

18&33mmMDF

20159

0775

0373

1005 X 260 X 410

28.0 kg

Four

200mm x 2

3" 75 mm textile

1" 25 mm textile

6 ohm

4.5-34

35 Hz - 43 kHz

28 Hz

45 kHz

100 mm

90 db

>3%

>1%

250 W

100 - 500 w

115 db

90'to14kHz

70'to12kHz

Ported / Sealed

30/14L

30 HZ

650 Hz , 3 kHz

18&33mmMDF

02162

02160

0775

0368

1140 X 260 X 410

34.5 kg

Connecting Stereo Loudspeakers -2

Tri-Wiring - Opus 1, 2, 3

The advantages of bi-wiring can be extended by tri-

wiring. Here each drive unit is separately connected to

the amplifier for the utmost fidelity. The advantages of

tri-wiring can be fully realised by optimising the type of

cable used to connect the drive units. Your Opus dealer

will be pleased to assist you to make the correct choice.

Unscrew each terminal a few turns and remove the

metal tri-link straps. Connect the cables between the

amplifier and the loudspeakers as indicated and re-

tighten all terminals securely.

Bi- and Tri- Amping

Using separate amplifiers for treble, mid and bass

units further improves performance by ensuring that

each loudspeaker is separately driven - operating each

drive unit with its individual amplifier means that each

amplifier channel sees a narrower frequency range.

This both maximises signal delivery and reduces

distortion artefacts to negligible proportions.

Although all the amplifiers on one channel need not

have the same power output, the amplifiers must be

phase coherent and have identical voltage gains. The

amplifier setup used must obviously be identical to

both channels.

Opus² 1,2,3:

You can tri-amp the loudspeakers, or use two

amplifiers with one amplifier connected to the bass

channel, and the other connected to midrange and

treble terminals in a bi-wiring configuration.

IMPORTANT!

If you are considering multi-amping, unless you know

exactly what you are doing it is essential that you

seek the advice of your Opus dealer before proceeding

further.

AMPLIFIER

R.SPKR

L.SPKR

Opus² M1 and M2

AMPLIFIER

R.SPKR

R.SPKR

AMPLIFIER

L.SPKR

L.SPKR

Opus² 1,2,3

AMPLIFIER

R.SPKR

R.SPKR

R.SPKR

AMPLIFIER

AMPLIFIER

L.SPKR

L.SPKR

L.SPKR

26

11

Opus²

Opus²Opus²

Positioning AV Speakers

Front Loudspeakers:

placed on either side of the TV monitor, 2 to 3 metres

apart and somewhat above the listener. The speakers

should be angled slightly so they are aimed towards

the listeners.

Rear Surround channels:

should be as room filling as possible. We recommend

placing the speakers in a high position, behind the

listeners head. If the rear wall is more than 1 metre

behind the listening seat, an alternative position is on

the side walls. If the walls are a long way from the

listening seat, consider stand mounting the

loudspeakers.

Centre Channel:

centre loudspeaker. Speech should appear to originate

from the actors mouths. Operating height is

important. Ideally the front and centre channel

speakers should be at the same height. The front of

the cabinet should be level with the TV screen.

The front loudspeakers are

The reproduced sound

Most of the dialogue comes from the

The Opus² Tri-Centre

on a stout shelf.

The Opus² Tri-Surround

design of this loudspeaker enables its use either on the rear or the

side walls of the room. We suggest that you rear mount these

loudspeakers where possible.

loudspeaker may be freestanding or mounted

is designed for wall mounting. The unique

SUB

The Opus² Drive Units-2

The 75 mm Soft Dome Midrange Unit

A new studio monitor quality large dome mid-range drive unit is used over the crucial midband frequencies, 700 Hz – 4 kHz. A

key feature of this driver is exceptionally low distortion over its entire working range - typically less than 1% at a Sound Pressure

Level of 100 db at 1 metre. The driver is mounted in a

custom matched fascia plate which provides partial horn

loading, giving a broad angle of dispersion at its upper

crossover point. The fascia plate is die cast aluminium,

designed to place the units as close as possible for

optimum integration and to create a point source effect.

The dome is driven by a large 75 mm voice coil based on

a hard aluminium former to provide maximum rigidity

and to maintain a cool coil operating temperature by

maximising thermal radiation. The diaphragm supporting

ring is die cast aluminium to maintain perfect concen-

tricity of the moving parts during assembly. The dome is

pressure equalised by a closely coupled underside

perforated dome baffle and a rear chamber within an

extended die cast aluminium finned rear cover which

serves as a heat sink and breaks up internal cabinet

resonances. A powerful high flux shielded magnet

provides ample reserves of motor force to the dome.

Anatomy of a Midrange Dome

The Opus²Av System

The Opus² Av System is a three speaker system. The

system comprises a pair of AvS Satellite loudspeakers

and a single AvC Centre channel loudspeaker. Both

loudspeakers are three-way units.

The loudspeakers are designed for wall mounting -

integral keyhole slots are provided and, for additional

safety, a security fixing kit is included with each

loudspeaker.

The Opus² AvC may be wall mounted on its integral

keyhole slots, or on a special mounting bracket. When

mounted on its bracket the speaker may be angled

vertically for optimum effect. The bracket mount is

shown in the illustrations.

The loudspeakers' small front to back profile makes

them ideal as partnering speakers for Plasma or LCD

screens.

The Opus² Av system may be used together with an

Opus² Subwoofer to add full 5.1 connectivity to a

conventional Stereo system - their 3-way design and

voicing making an ideal surround sound complement

to regular Opus² loudspeakers.

2 Channel System with Centre Channel Re-inforcement

5.1 System

SUB

25 mm Soft Dome Tweeter

The highest frequencies are handled by a soft dome driver. Extensive research at Wharfedale

has established that properly engineered soft domes are a better choice than metallic based

domes which add their own typical character to the treble response.

The new Opus² tweeter has been re-engineered with a specially fine gauge aluminium coil to

reduce the moving mass and extend response to beyond 45 kHz -far above audible frequencies.

Careful attention to detail has resulted in wide dispersion with very low distortion again typically

below 1% at an SPL of 100 db at 1 metre. The unit uses a fully shielded high flux neodymium

magnet, and produces a typical SPL of 93 dB at 1 metre at an input of one Watt. Die cast

aluminium structural parts are used throughout and a rear cover isolates the tweeter dome from

the pressure of other speaker components

.

Crossover and Internal Wiring

All models feature printed circuit boards with large copper tracks to maximize signal transfer and component layouts designed to

eliminate inference from any residual stray magnetic fields. The printed circuit boards are mounted on vibration free mountings.

Most models have two printed circuit boards to separate the bass inductors from those coupling the midrange and tweeter units.

The bass inductor has a large magnetic field when operating which would

otherwise modulate the other inductors. All inductors feature perfect layer

winding and large gauges of wire are used to keep insertion loss to a

minimum. Capacitors in crossover networks pose special problems. The

Opus² range features high grade low-loss, low-ecr, polypropylene or reversible

electrolytic capacitors specially selected for their outstanding audio properties.

These capacitors are marked with the ‘Wharfedale super audio capacitor’

logo. The internal cables used are specially made and assembled in our

factory: 4 multiple strand oxygen-free copper wires are plaited into a single

cable for all connection runs within the speaker.

12

25

Opus²

Opus²Opus²

The Opus² Drive Units

Bass Drivers

Opus ² bass units are of two main types.

The smallest cabinets use a triple laminated cone of glass /carbon/ glass . Smaller cabinets intensify reflections

that can pass back through the cone. The special “tri-lam” construction minimises these reflections because of

its extreme rigidity - the small increase in cone mass being more than offset by the performance improvements.

The larger cabinets use larger drivers and here low cone mass is of crucial importance im maintaining impulse

response and performance.

Our latest cone designs for the large format models utilise our own

bi-carbon weave and laminating processes. Carbon fibre has

immense longitudinal strength and is used in many structures

where high strength and light weight are key requisites examples

of structures using carbon fibre include Formula 1 racing cars,

aeroplanes and spacecraft. The carbon fibre bundles are woven

and impregnated with special bonding resins that are

subsequently pressure formed and heat cured. The resulting

material is exceptionally rigid and exhibits very low levels of

internal resonance. As a consequence, energy losses in the cone

transfer mechanism are very low.

Because our bass drivers are just that, our bass cones maintain

true pistonic action over their entire designed low frequency range. The cone is terminated with a conventional

large half roll of synthetic butyl rubber with proven damping qualities.

Voice coils in high performance loudspeakers have to withstand extremes of mechanical stress and heat. The

lateral strength of Opus² voice coils is very high. We use a combination of half hard aluminium and resin

bonded glass fibre. The ability of our voice coils to resist deformation under extreme stress contributes towards

some of the lowest distortion figures ever seen in conventional drivers. The coils are covered with a dust cap of

the same material as the cone.

Large, high performance traditional ferrite magnet systems

are used throughout. All Opus²large format speakers are

fully magnetically shielded with additional bucking magnets

and steel covers on the bass driver magnets. You can

operate an Opus² speaker close to the most magnetically

sensitive TV monitor with no fears over screen interference.

Motional noise can be a problem with high output bass

systems. The high pressure injection die cast aluminium

chassis used on our bass drivers feature an 'open design'

where narrow legs maximise the open areas of the frame to

all but eliminate rear reflections. Trapped or compressed air

within the driver unit can easily move through vents in the

voice coil, through the magnet structure, through the

spider, and from the underside of the central cap both

through holes in the cone and the magnet central core.

Wall Mounting AV Speakers

320 mm

Security strap mounting

Opus² Tri-Sat

120mm

60mm

60mm

Opus²AvS

2: Attaching the loudspeaker

Remove the plastic insert from the security mounting thread

between the keyhole slots.

Connect the connecting wire to the loudspeaker but do not

connect the cable to the amplifier. You will need to use low

profile cable -your dealer will recommend a suitable product.

Lift the loudspeaker up to the mounting position. With the

screw, attach the security strap to the loudspeaker security

mounting.

Align the keyhole slots over the screw headers and gently

pull down until the speaker is securely fastened. You may

now connect the loudspeaker to the amplifier.

On the Av speakers, ensure the connecting cable does not

foul the lower keyhole slot.

This operation may need two people. If you are in any doubt

about your ability to carry out this procedure, consult a

suitably qualified builder or domestic electrician.

The AvC and AvS speakers feature a three point mounting system. Two point mounting is the

simpler option and this is the method to use unless you feel you need the security of three point

mounting. Ensure the wall is sound, free of obstructions, hidden pipes etc. and capable of

supporting the loudspeaker plus a small amount of pulling force. You will also need suitable wall

fixings and some 38mm No 8 Round Head screws.

1: Getting started

Draw a horizontal line on the wall and mark off the

mounting centres of your loudspeaker referring to the top

dimension of the drawings.

400mm

Drill and plug two holes.

The screw header consists of a plastic spacer and a

washer. Thread a washer and a plastic spacer onto each

screw. Thread one of the screws through one eyelet of the

security strap. Let the security strap hang free.

Screw both header assemblies firmly to the wall.

Do not over tighten the screw. The spacer should rest

against the wall and not be driven into the surface.

Opus²AvC

380 mm

190 mm 190 mm

135 mm

24

13

Opus²

Opus²Opus²

Mounting the Opus² AvC Bracket

Using one of the two brackets as a template

mark out four horizontal fixing points on the

wall.

Invert one bracket, place one bracket over the

other and attach the bracket to the wall with

three screws.

Thread the fourth screw over one loop of the

security strap. Attach firmly to the wall.

Remove the two screw covers from the sides of

the cabinet.

Connect the cable to the loudspeaker but do

not attach the cable to the amplifier.

Offer the loudspeaker up to the bracket and

attach the security strap to the cabinet with the

supplied screw.

Now attach the loudspeaker to the bracket with

the two large fixing knobs. You may now

connect the loudspeaker cable to the amplifier.

To adjust the vertical angle: Slacken the fixing

knobs a quarter of a turn, adjust the angle and

re-tighten the loudspeaker.

125 mm 125 mm

150 mm

The Opus² Series

About Your Loudspeakers

The Opus² series of speakers is the latest iteration of the highly acclaimed original

Opus range. New models have been introduced to extend the range of applications.

These new models together with the latest versions of the award-winning established

models address the needs of both the most discerning audiophile and the most avid

movie enthusiast.

All the passive speakers in the Opus² range are 3– way loudspeakers - a blend of

impeccable performance, phenomenal dynamics and stunning good looks.

Features of the range include:

Magnetically shielded front loudspeaker models eliminate interference with

#

conventional television sets.

Very low distortion across the entire audio band

#

Low, controlled, excursion of bass and bass-mid drive units.

#

High flux magnet systems for good dynamic response to rapid transients

#

Wideband dispersion for excellent stereo image and staging

#

No beaming, ‘lobing’ or polar response anomalies in effects loudspeakers.

#

Fully integrated design and manufacture – a seamless blend of acoustic

#

performance and design aesthetics.

Connecting AV Speakers

The Tri-Centre may be mono, bi, or tri-wired. Bi-Wiring is

perhaps the most popular option.

The Tri-Surrounds may be mono-wired as shown, or in a

large installation, bi-wired.

Tri-Centre

CENTRE FRONTREAR

Tri-

Surround

Right

Left

LEFTLEFT RIGHTRIGHT

SUB

WOOFER

Connecting the Opus² AV System

The system may be mono-wired as shown, or bi-wired.

AvS

Right

Left

AvC

SUB

LEFTLEFT RIGHTRIGHT

CENTRE FRONTREAR

WOOFER

The Opus² Cabinet

The enclosure of your speaker is a piece of fine furniture.

Real wood veneers are selected and pattern matched by hand

before being laid. Over a period of several days a high gloss ‘piano’

finish is applied. This involves several coatings of lacquer – each

layer is laboriously cut and polished before the next coat is

applied. Only through this time consuming and skilled technique,

can we achieve the deep and lustrous finish which exemplifies the

Opus² range.

Every Opus² speaker model has an individually designed

curved cabinet which marries utility and form.

Conventional parallel sided boxes create acoustic waves

within the cabinet – the interaction of these waves

creating anomalies in the forward response. The

complex curved and braced geometry of Opus² cabinets

allied to a dense, acoustically inert cabinet material

prevents the build up of damaging resonances and

results in clear, precise sound, free from cabinet

colorations.

14

23

Opus²

About Your Loudspeaker

Opus²

Opus² Subwoofers

Introduction

Opus² subwoofers are intended for use with very high quality sound reproducing systems in the home. Your subwoofer

will probably be used in conjunction with Opus loudspeakers though they will partner any high performance

audiophile or home cinema amplification and loudspeakers. There are three subwoofers in the range - all the

subwoofers offer the same connection facilities. All the subwoofers are remote controlled for ease of setup and

adjustment.

Positioning the subwoofer

Although the unit may be placed almost anywhere in the room, we recommend that it be placed in front of the listener

and as central to the listening position as possible. There should be a mains outlet within easy reach. The subwoofer

should not be operated within 450mm of a television set as the drive unit magnet may distort the picture. Remember

that there should be a line of sight between the listening position and the front of the subwoofer otherwise the handset

remote functions will not be operable.

We suggest you initially position the subwoofer about 20cm (8 inches) from the wall. Placing the unit close to the wall

will enhance the bass; placing it across the corner of the room will increase the bass further, possibly at the expense of

clarity. Do not place the subwoofer close to surfaces or objects that may rattle. The floor under the subwoofer should

be sound with no loose floorboards, etc. Experiment with locations and sources before making a final decision.

Installing Batteries in the Handset

The handset operates on two LR6 (AA) batteries which are supplied. The battery compartment is

located at the rear of the handset. Unwrap the batteries and slide the cover off the handset.

Place the batteries in the handset observing the polarity. The correct orientation is shown on the

diagram. When the batteries are installed, replace the cover.

Before Connecting the Subwoofer

#

Switch off your amplifier and all connected source units at the mains.

#

Unplug the power cords to all system components if necessary

#

Make sure the subwoofer is disconnected from the mains and that the ON/OFF switch is OFF

#

Before re-connecting your system to the AC power supply, check that all the connections are properly made

#

Check that all speaker terminals are done up tightly.

#

Ensure that there are no strands of wire shorting adjacent speaker terminals

#

Signal cables should be properly terminated and fully screened to minimise hum. If you connect your subwoofer

via the low level signal inputs, the cable between your control unit or processor and the subwoofer could be quite

long so screening is particularly important. Consult your dealer if in doubt.

AA AA

22

15

LEFT

RIGHT

LEFT

INPUT

OUTPUT

RIGHT

LEFT

INPUT

OUTPUT

RIGHT

Opus²

AC 220-240V~50Hz 400W

FUSE

T4AL250V

POWER

LEFT

INPUT

OUTPUT

RIGHT

OFF

ON

SERIAL No:

N 11189

LEFT

RIGHT

AVIS: RISQUE DE CHOC ELECTRIQUE

-NEPAS OUVRIR

WARNING: SHOCK HAZARD

-DONOT OPEN

CAUTION

WHARFEDALEINTERNATIONAL LTD,HUNTINGDON, UNITED KINGDOM

Opus²

Connecting Your Subwoofer

All Opus² Subwoofers have the same Rear Panel connectivity

REAR PANEL CONNECTIONS

WHARFEDALEINTERNATIONAL LTD,HUNTINGDON, UNITED KINGDOM

RISKOF ELECTRICSHOCK

SERIAL No:

LINE LEVEL

SPEAKER LEVEL INPUTS

WARNING: SHOCK HAZARD

AVIS: RISQUE DE CHOC ELECTRIQUE

N 11189

DONOT OPEN

!

-DONOT OPEN

-NEPAS OUVRIR

AC 220-240V~50Hz 400W

FUSE T4AL250V

Connecting to a Digital AV Processor

If your AV processor has a line level or LFE subwoofer output you should use this connection. You will need to purchase a single

screened RCA phono lead from your dealer.

Mains Input

Mains Fuse

Mains Power Switch

Speaker Level Inputs

Line Level Outputs

Line Level Inputs

Looking After Your Loudspeaker

Do not open the speakers; there are no user

serviceable parts inside.

Never touch the drive units either with an

object or your hands.

Connect a mono RCA phono cable from the processor to the Subwoofer left line input.

A/V

LINE LEVEL

Stereo Line Level Connections

PROCESSOR

SUBWOOFER

OUTPUT

SUBWOOFER

Stereo line level connections will be necessary where where there is no dedicated single subwoofer output, but where there is a

separate preamp output, or, if an integrated amplifier, a pre/main link that can be separated.

The output must be controlled by the system volume control - a tape output is unsuitable. If in doubt, consult your dealer.

Connect a stereo RCA phono cable from the line output of the preamp to the Subwoofer line inputs.

AV PROCESSOR/

STEREO PREAMP

Preamp Output

SUBWOOFER

LINE LEVEL

Stereo High (Speaker Level) Connections

The high level Speaker connections should be used only if your amplifier does not have a line level subwoofer output. In this

connection the subwoofer is fed together with the Front loudspeakers. For this you will need two extra twin core cables.

Remove marks from the cabinet and polish it

with a soft, slightly damp cloth.

Do not apply furniture sprays or solvents -

these can spoil the finish.

16

TO FRONT RIGHT

LOUDSPEAKER

AMPLIFIER

RIGHT

LEFT

FRONT

TO FRONT LEFT

LOUDSPEAKER

SUBWOOFER

SPEAKER LEVEL INPUTS

Avoid getting any liquid behind the grille.

If you accidentally spill liquid on your

loudspeakers, take them to your dealer for

attention before using them again.

21

Opus²

Delay and LFE Settings

The purpose of delay is to enable surround and dialogue information to arrive at the listener’s ears at the same time as

the Front channels, even when the listening seat is in a non-ideal position.

Rear Delay: If the listening position is equidistant from the Front and Rear speakers, a low delay setting should be set.

The closer the listener is to the Rear speakers the higher should be the delay setting used,

Centre Delay: If the Centre speaker is level with (or slightly behind) the Front speakers, set the delay to zero. If the

Centre speaker is forward of the Front speakers, increase the delay.

LFE:

In domestic systems the LFE channel typically feeds into the subwoofer. Where no subwoofer is used, the LFE

signal is combined with Front Channel information. When you set the LFE level at your AV processor, use care as the

powerful low frequencies can overload domestic loudspeakers.

Opus²

Operating Your Subwoofer

Check that all connections to the subwoofer have been properly made and that the main volume control is at minimum. Plug the

supplied power cord into the mains socket on the rear panel.

Plug in the mains plug and switch the power on. Now switch the subwoofer on with the rest of your system.

The subwoofer on/off switch has a rocker action; press the upper part to switch the equipment on and the lower part to switch it

off. When switched on the light above the power switch will glow and the subwoofer will be operational.

Operation

All control functions are carried out using the remote handset. The handset must be pointed at the subwoofer and be in line of

sight for it to operate.

Standby:

Operating the Standby key brings the subwoofer in and out of Standby.

If you hear popping or thumping noises coming from the front loudspeakers or subwoofer, immediately turn the AV

Processor's volume level down and then back off the LFE level. This should cure the problem. If it does not, back off

the volume level at the subwoofer (if you are using one) until the problem disappears.

Please read the relevant sections of your AV amplifier manual and familiarise yourself with the various issues. If you

are unsure, consult your dealer for help.

Expanding the System

Dolby Labs, DTS and THX offer 6.1 and 7.1 formats which extend the 5.1 principle by adding one or two extra rear

effects channels. Although the precise configuration of these systems will depend on the capabilities of your processor

and you should be guided by those instructions, we would make some observations.

For most 6.1 and 7.1 formats, and especially Dolby ES the listening seat should not be too close to the rear wall.

Optimising the time delay so that information from all speakers arrives at the listening seat coherently is critical if the

benefits of these systems are to be fully realised. THX adjustments in particular need to be followed to the letter.

Dolby Labs Recommended 7.1 Placement

(Single Back channel for 6.1 shown dotted)

Left Front

Centre

LFE

22º

Right Front

30º

The preset light will not light

if no preset has been set up

or if a preset is over-ridden.

In Standby, the Volume,

Filter, Preset and Phase

indicators are extinguished.

Rear panel lights stay on.

Press the Volume

Volume:

+ key to increase the

volume level. Press the

Volume - key to decrease

the subwoofer volume.

The volume range on the front panel display varies from (minimum) to (maximum).

Low Pass Filters:

rolls off. The filter has steps at Off and 35Hz-85Hz in 10 Hz increments. When ‘OFF’ is selected the

subwoofer operates over its full designed range. Pressing other keys lowers the maximum operating

frequency. The Low Pass Filter value should be chosen having regard to the nature of the Front speakers

and programme material. Follow the Setup Notes on Page 11 and the instruction manual of your AV

processor (if used) for more guidance.

This key toggles the subwoofer between 0º and 180º phase shift.

Phase:

Four different settings of level, frequency and phase can be stored. Pressing and holding any of

Presets:

the preset keys on the remote for 3 seconds will cause the current settings to be stored in that preset.

The display will show the preset number then flash the preset number once to show it has stored the

preset. To change from one preset to another: Press a preset key on the remote for less than 3 seconds

to recall the settings of that preset. The display will show the preset number.

Pressing the appropriate filter key will select the frequency at which the subwoofer

VOL UME

LOW PASS FILTER SELECT

45Hz

35Hz

MEMORY

1 2

POWER

3

4

00 99

OFF

85Hz75Hz65Hz55Hz

PHA SE

0

180

20

Left Surround

Left Back

150º

110º

135º

Right Back

90º

Right Surround

If you select a preset and then alter any aspect of the setup, the preset light will extinguish (as the setup

no longer matches the preset).

When brought out of standby for the first time, the unit will display the factory presets. Thereafter, bringing the unit out of

Note:

standby will revert it to the operational state last used. If you switch the power on and off at the rear panel while the unit is in

standby, the unit will power up to a normal operating state (i.e. not in standby). To enter standby, again press the Standby key.

A Note on the Front Panel indicators.

front panel lights will indicate the current setup and volume. After 10 seconds the lights will extinguish and the panel will go dark.

This is intentional

switch on the rear panel will always remain illuminated whenever the subwoofer is switched on at the mains.

and the purpose is to minimise any distraction from the programme in play. The light above the mains power

When you bring the unit out of Standby or perform any operation using the handset the

17

Opus²

Opus²

Setting Up Your Active Subwoofers

Setting up of the subwoofer should be performed with all tone controls and filters on your amplifier or processor set ‘ flat’.

Listening rooms are not ideal. Because of room geometry and construction there will be areas with severe peaks at some

frequencies and severe troughs at others. If you site loudspeakers in such areas the response will be highly non-linear. It is easier

to treat high frequency irregularities by the use of drapes, soft furnishings etc., but very hard to do the same at bass frequencies

due to the very long wavelengths - at 40 Hz the wavelength is almost 9 metres.

To help locate standing waves in your listening room, one idea is to sit in the listening seat and recruit a friend with a deep voice

to speak as he moves around the area where you propose to site your subwoofer - you will soon find out where to site it!

Where the voice sounds most natural is a good place to start.

Although the subwoofer's bass output is enhanced by walls or corners, so often is coloration. As the drive unit faces downward,

the floor will influence the sound. The surface under the subwoofer should be stable and unobstructed. If the carpet is very thick,

consider placing the subwoofer on a solid surface such as a marble slab. If you place the subwoofer where it amplifies the

irregularities of the room or the main speakers the result will be bloated, coloured bass. If acoustic guitar and male voice sounds

coloured when the subwoofer is operating and less coloured when in standby, you need to address the positioning first before

adjusting any controls.

Loudspeaker Phasing:

loudspeakers are connected, check their phasing by playing a mono source - the sound should appear from a point midway

between the front loudspeakers. If this position is indefinite, reverse the connections to one speaker. Correctly connected

loudspeakers give a definite centre sound source with fuller bodied tenor and bass registers.

Setting the Phase of the Subwoofer:

temporarily set the low pass filter to ‘off’ and the phase to 0º and play some bass heavy music in Stereo through the main speakers

and the subwoofer. From the listening position, switch the phase between 0º and 180º. The setting which appears to give the greater

bass output is correct. Now follow the instructions below for setting the low pass filter.

Make sure that all loudspeaker channels are connected in phase. If there is a doubt about the way the

Phase at very low frequencies is not straightforward to detect. Initially we suggest you

not

Setting Up a Home Theatre System

Some of this chapter may appear to repeat the content of the Subwoofer pages - the context however is different.

Placement

Front And Effects Channels

The front loudspeakers are placed on either side of the television screen, 2 to 3 metres apart. The speakers should be angled

slightly so they are aimed towards the listeners.

We recommend placing the rear effects speakers in a high position, behind the listener’s head. If the rear or side walls are a long

way from the listening seat, consider stand mounting the loudspeakers. If the centre loudspeaker is very high or low, angle it

towards the listener's ear level. The front faces of the centre and surround loudspeakers should also be in line as far as possible.

Subwoofer

As the ear is unable to detect the direction from which deep bass originates, this allows you freedom to position the unit. Varying

the distance from the wall alters the bass. Placing the subwoofer across a corner boosts the bass but may impair clarity. The

performance of Home Theatre systems can often be enhanced by using a pair of subwoofers.

SUB

WOOFER

FRONT

RIGHT

CENTRE

FRONT

LEFT

Low Pass Filter

own bass management system.

Setting Loudspeaker Sizes:

usually ‘Large’ or ‘Small’. This sets the bass management for the system. All Opus² regular loudspeakers can be set to 'Large'

Smaller loudspeakers (and possibly also the M1) should be set to 'Small' for the Front channels, as the subwoofer will be better at

providing clean, deep bass. Choose 'Small' for the surround channels and also for the Centre channel, so that any bass from these

channels will be directed to the subwoofer. Set the ‘Subwoofer’ option on the processor to 'On’ or 'Yes'.

After experimenting with various sources you may need to adjust the LPF settings. Try to ensure the subwoofer blends into the

sound stage. Setting the subwoofer to Standby should reduce the bass extension, not change the bass level - as always personal

taste plays an important part.

: If you are using a digital AV processor the initial subwoofer setting should be ‘OFF’ as the processor will have its

Most digital AV Processors ask you to specify the size of speakers in the various channels. These are

Setting levels:

Once the loudspeaker settings have been finalised, put the AV amplifier into its “Test” mode (see instructions supplied with your

processor.) Adjust the levels until all channels are reproduced at equal loudness.

When adjusting the subwoofer output level avoid setting too high a level or you will swamp the sound with bass which be tiring to

listen to and may limit the subwoofer’s ability to respond to large bass transients. Set a sensible level going the subwoofer

from the processor. The volume display should be around at normal listening levels.

LFE:

This channel was originally an additional bass channel with its own dedicated subwoofer. In practice however, if any

speakers are set to ‘Small’, the LFE channel is combined with the bass from those channels and fed into the subwoofer. When you

set the LFE level from your AV processor, use care as the LFE channel contains powerful low frequencies which, although normal

in a cinema, may overload a domestic subwoofer. If, during a programme, you hear popping or thumping noises from the

subwoofer, turn the AV Processor volume level down and back off the LFE level. If this does not cure the problem, lower the

subwoofer volume level.

50

into

ALTERNATIVE

POSITIONS

REAR

LEFT

ALTERNATIVE

POSITIONS

REAR

RIGHT

Setting Loudspeaker Sizes

Many digital AV Processors ask you to specify the size of speakers in all channels - usually ‘Large’ or ‘Small’.

The Opus² M2, 1, 2, and 3 may be safely set to 'Large'. The Opus² M1 and Tri-Centre may be set to 'Large' for smaller systems or

rooms, or 'Small' for large scale systems. The AvC, AvS and Tri-Surround speakers should be set to ‘Small’. As always personal

preference will play its part

If you are not using a subwoofer: Set the Front Speakers to ‘Large’. Set the ‘Subwoofer’ option on the processor to 'Off' or ‘No'. The

Front channels will now receive all the system bass.

If you are using a subwoofer: When set to ‘Small’ all the system bass will go into the subwoofer. If you choose ‘Large’ the Front

channel bass will be reproduced from the Front speakers.

Once the loudspeaker settings have been finalised, put the AV amplifier into its “Test” mode (see instructions supplied with your

processor). Adjust the level of each channel until all channels are reproduced at equal loudness.

You may need to adjust the subwoofer output level. Avoid setting too high a level or you will swamp the sound with bass and may

limit the subwoofer’s ability to respond to large bass transients. You should also set a sensible level going into the subwoofer from

the AV processor.

18

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