Wharfedale opus2 2 Owner Manual
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Wharfedale Loudspeakers Ltd
IAG House, Sovereign Court,
Ermine Business Park,
Huntingdon PE29 6XU. England.
Tel : 0845 458 0011 / +44 (0) 1480 447700
Fax : +44 (0) 1480 431767 www.wharfedale.co.uk
Opus²
USER MANUAL
Opus² - M1
Opus² - M2
Opus² - Stand
Opus² - 1
Opus² - 2
Opus² - 3
Opus² - AV System
Opus² - Tri Centre
Opus² - Tri Surround
Opus² - SW250 Subwoofer
Opus² - SW300 Subwoofer
Opus² - SW380 Subwoofer
Opus²
User Cautions
CAUTION!
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER-REMOVEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
ADVERTISSEMENT: RISQUE DE CHOC ELECTRIQUE- NE PAS OUVRIR
IMPORTANT SAFETY INFORMATION
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings.
Install in accordance with the manufacturer'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 electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
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,donotexposethis 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: Changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this device.
Warning Opus² Subwoofers: 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 the rear panel. To permit free access to this 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 the following measures:
!
!
!
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
!
Consult the dealer or an experienced radio/TV technician for help.
IMPORTANT NOTICE 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 into a 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 correspond colours to the may not coloured
GREEN
&
YELLOW
(EARTH)
FUSE markings identifying the terminals in your plug, proceed as follows:
BLUE
(NEUTRAL)
BROWN
(LIVE)
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 or coloured GREEN or marked with the symbol
1
Opus²
36
Opus²
Conclusion
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.
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:+44 (0)1480 452561
Fax: +44 (0)1480 413403
USA
IAG America, Inc.
8440 154th Avenue NE
Redmond, Washington 98052
USA
Tel: +1 425 861 3909
Fax: +1 425 861 3906
Asia
IAG
Room 2310 - 2311 Press Building,
Shennan Road C,
Shenzhen,
China
Tel: +86-755-82091200
Fax: +86-755-82091205
Produced after 13th August 2005.
Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist.
Check with your Local Authority or retailer for recycling advice.
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
Accessories
Opus²
1
2
Opus²
Before You Begin...
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 controls may damage the amplifier and loudspeakers.
#
#
Do not connect loudspeaker terminals to the mains supply.
Ensure that your loudspeakers are correctly wired and are in phase.Do not subject your loudspeakers to excessive cold, heat or 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 a vase of flowers - should be placed on the product.
#
#
Do not use makeshift stands. Always fit a manufacturer's approved stand using the instructions and the fixings provided. Your dealer will advise you.
#
Do not attempt to dismantle the loudspeaker. There are no user serviceable parts inside and you will invalidate the warranty.
#
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 the drive units from children and pets.
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 close to a TV set.
#
When connecting your loudspeakers, do not run cable across areas of open floor where they may be a source of danger. Run them safely, around room boundaries if necessary.
Measurement and Analysis-2
Very low distortion over the vocal bandwidth at 100dB Superb, wide, even dispersion for larger listening areas
Optimised linear on-wall resopnse
Low distortion over the full spectrum at 100dB at 1 m.
Superb, level and even on-wall response
Optimised filters blend seamlessly with front speakers Low subwoofer distortion
35
34
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
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.
Opus²
Very smooth response near boundary (200mm) Very linear dispersion to 12 kHz over a 90 degree axis
Impressive decay time and absence of resonances Ultra-linear tweeter response
Linear studio standard frequency response Very low measured distortion at 100dB at 1 metre
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
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
What's In The Box?
4
Opus² -M1, M2, Stands Opus² -AV System Opus² -1, 2, 3
User Pack
Accessories:
Opus² - M1, M2
• One Pair of Gloves
• 8 Rubber Feet
Opus² - Stands
• Soft Floor Spike Seats (2 Sets)
• One Pair of Gloves
User Pack
Accessories:
• One Pair of Gloves
• 9 Screw headers
• 3 Security Ties
• 3 Tie Screws & Washers
• 2 "L" Brackets
• 2 Bracket Knobs
User Pack
Accessories:
• Two Pairs of Gloves
• Soft Floor Spike Seats (1 Set)
• One Pair of Bi-Wire Likks
Crossover Network Topology -2
33
32
Opus²
Crossover Network Topology -1
Opus²
Opus² - Tri-Centre
Opus² - Tri-Surround
Opus² - Subwoofers
User Pack
Accessories:
• One Pair of Gloves
• 4 Rubber Feet
• One Pair of Bi-Wire Links
User Pack
Accessories:
• One Pair of Gloves
• 4 Screw Headers
• 2 Security Ties,
• 2 Tie Screws and Washers
User Pack
Accessories:
• Two Pairs of Gloves
• Soft Floor Spike Seats (4)
• Remote Control Handset
• 2 Batteries
• Power Cord
5
6
Opus²
Setting Up Your Loudspeakers
Subwoofer Drive Unit Specifications
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 s r b p Single 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 s r b p Single 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 s r b p Single 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
31
30
Opus²
Subwoofer Specifications
Parameter
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 dimensions H x W x D
Net Weight
Opus² - SW 250 Opus² - SW 300 Opus² - SW 380
One
10" 250 mm
10kΩ
30 - 100 Hz
113db
35 - 85Hz in 10 Hz steps
250 Watts
325mv sealed
60 mm
25mm MDF
One
12" 300mm
10kΩ
25 - 95 Hz
114db
35 - 85hz in 10 Hz steps
300 Watts
325mv sealed
80 mm
25mm MDF
One
15" 380mm
10kΩ
25 - 95 Hz
120db
35 - 85Hz in 10 Hz steps
600 Watts
325mv sealed
80 mm
25mm MDF
Selected wood veneers in high gloss piano lacquer finish to match Opus² loudspeakers
420 x 420 x 375 mm 520 x 390 x 450 mm 570 x 465 x 570 mm
27 kg 29.5 kg 40.5 kg
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.
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 revolutionary 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.
Opus²
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: Slacken the retaining collar at the bottom 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.
Release the locking knob on the top.
Turn spike out and down to level.
When the loudspeakers are level: Re-lock top knob and then tighten all the collars. Make sure the spikes are fully tightened.
If you are using the Opus² stands to support the M1 or M2, we suggest you level the stand
before
you place the speakers on them.
WARNING: Opus speakers and stands are heavy and the spikes could penetrate softer floor materials over extended periods. Spike seats are supplied to protect sensitive floors and floor coverings.
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.
Front Spike
Top Knob
Bottom Collar
Spike
Using the Spike Seat
Bottom Collar
Spike
Rear Spike
10mm
40mm
7
8
Opus²
Connections And Terminals
Crossover Networks
Opus² -1,2,3 and Tri-Centre loudspeakers use a specially 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 loudspeakers use a bi-wiring panel 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 loudspeakers use 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.
Single
Wiring
Single
Wiring
Single Wiring
Bi- Wiring
Tri- Wiring
Bi- Wiring
Bi-
Wiring
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.
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
Fs
Frequency range -3dB
Distortion at 100dB @ 1m
0775 & 0776
75mm textile
75mm aluminium
70 x 32 x 15
248gm
93dB
500Hz
400Hz–5kHz typically < 1%
Part number
Dome material & size
Coil size & type
Magnet d1 x h
Magnet weight
SPL 1w @ 1m
Fs
Frequency range -3dB
Upper frequency limit -
0373, 0374, 0375, 0368
25mm textile
25mm aluminium
25.4 x 4mm Neodynium
14gm
92dB & 94dB
1 kHz
800Hz–40kHz
45kHz
Crossover sections
Type
Wiring
Connections
Crossover points at -6dB
Bass mid
Tweeter
3 way
Butterworth
Triple Wire Plaited OFC
Amp/solder
600 & 750Hz; 900 Hz
400 & 900Hz
3000–4000Hz
3000–4000Hz
29
28
Opus²
Bass Drive Unit Specifications
Opus²
Positioning Stereo Loudspeakers
The distance between the speakers should be the same as between you and the speakers.
Angle speakers inwards for a more precise stereo image
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
Re
Fs
Qms
Qes
Qts
Mms
Cms
Vas
BL
Opus² Tri-Centre
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 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
Opus² M1 & Av
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 M2
200mm 8"
Aluminium
Tri-lam glass/carbon srbp Single roll
38mm Al; 4 Layer
920g
1.1T
6mm
25Hz- 800Hz
200mm 8"
Aluminium
Woven carbon fibre srbp Single roll
38mm Al: 2 Layer
920 g
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
Opus² 1
165mm
3.6Ω
31.96Hz
2.93
0.4
0.35
28.11gm
0.88mm/N
56.42L
7.15t/m
5º - 3
0º
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.
2-4 metres
See Table
The table below shows the ideal distance your model should be from the wall
#
#
#
#
#
#
Opus² M1: 300mm
Opus² M2 : 200mm
OPus² 1 : 300mm
OPus² 2 : 100mm
OPus² 3 : 100mm
Opus² Subwoofers: up to 100 mm
700mm
15°
- 4
0°
Parameter Opus² 2 Bass Mid
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
Re
Fs
Qms
Qes
Qts
Mms
Cms
Vas
BL
200mm 8"
Aluminium
Woven carbon fibre srbp Single roll
38mm Al: 2 Layer
920 g
1.1T
6mm
25Hz- 800Hz
165mm
7.2Ω
34.90Hz
2.87
0.65
0.53
24.31gm
0.80mm/N
54.62L
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
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
Opus² 3 Bass
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
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.
9
Opus²
Connecting Stereo Loudspeakers -1
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.
Opus² M1 and M2
AMPLIFIER
R.SPKR
L.SPKR
Opus² 1,2,3
AMPLIFIER
R.SPKR
L.SPKR
10
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.
HF+
Opus² M1 and M2
HF+
HF-
AMPLIFIER
R.SPKR
L.SPKR
HF-
LF+
LF-
LF+
LF-
Opus² 1,2,3
AMPLIFIER
R.SPKR
L.SPKR
Opus² - 3
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 / 22 L
30 Hz
650 Hz, 3 kHz
18 & 34 mm MDF sealed
25 L
60 Hz
900 Hz, 4 kHz
15 & 25 mm MDF
Opus² - Tri-Centre
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
Opus² - Tri-Surround
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
0 mm
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
Opus² - AvC
Three
170mm
3" 75 mm textile
1" 25 mm textile
6 ohm
4.0 - 18
45 Hz - 43 kHz
40 Hz
45 kHz
0 mm
88 db
>3%
>1%
100 W
40 - 200 W
108 db
90º to 14 kHz
70º' to 14 kHz sealed
9 L
70 Hz
700 Hz, 4 kHz
15 mm MDF
025123
025122
0775
0368
1210 X 315 X 440
40.0 kg
17171
0776
0373
242 X 575 X 320
14.7 kg
17170
0775
0375
280 X 460 X 180
10.6 kg
17172
0775
0374
230 X 500 X 140
9.0 kg
17172
0775
0374
500 X 230 X 140
9.0 kg
Opus² - AvS
Three
170mm
3" 75 mm textile
1" 25 mm textile
6 ohm
4.0 - 18
45 Hz - 43 kHz
40 Hz
45 kHz
0 mm
88 db
>3%
>1%
100 W
40 - 200 W
108 db
90º to 14 kHz
70º' to 14 kHz sealed
9 L
70 Hz
700 Hz, 4 kHz
15 mm MDF
26
Opus²
Opus² Specifications Connecting Stereo Loudspeakers -2
Tri-Wiring - Opus 1, 2, 3
The advantages of bi-wiring can be extended by triwiring. 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 retighten all terminals securely.
Parameter Opus² - M1
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.)
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 Hz
70' to 12 k Hz
Opus² - M2
Three
200mm
3" 75mm textile
1" 25mm textile
6 Ohms
5.0 - 25
40 Hz - 43 k Hz
36 Hz
45 k Hz
200 mm
88db
>3%
>1%
Opus² - 1
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%
Opus² - 2
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%
100 W
50 - 200 watts
108 db
90' to 14 k
70' to 12 k
Hz
Hz
150 W
60 - 300 w
109 db
90' to 14khz
70' to 12khz
250 W
100 - 500 w
115 db
90' to 14 kHz
70' to 12 kHz
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
Ported
18 L
40 Hz
650 Hz , 3 k Hz
15 & 30 mm MDF
Ported
27 L
40 Hz
700 Hz , 3 k Hz
18 & 33 mm MDF
Ported / Sealed
33 L / 10 L
35 Hz
650 Hz , 3 kHz
18 & 33 mm MDF
Ported / Sealed
30 / 14 L
30 HZ
650 Hz , 3 kHz
18 & 33 mm MDF
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
20164
0775
0373
505 X 255 X 450
16.4 kg
20159
0775
0373
1005 X 260 X 410
28.0 kg
02162
02160
0775
0368
1140 X 260 X 410
34.5 kg
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.
Opus²
AMPLIFIER
R.SPKR
L.SPKR
Opus² M1 and M2
AMPLIFIER
R.SPKR
L.SPKR
AMPLIFIER
R.SPKR
L.SPKR
Opus² 1,2,3
AMPLIFIER
R.SPKR
L.SPKR
AMPLIFIER
R.SPKR
L.SPKR
AMPLIFIER
R.SPKR
L.SPKR
11
12
Opus²
Positioning AV Speakers
Front Loudspeakers: The front loudspeakers are 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: The reproduced sound 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: Most of the dialogue comes from the 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 Opus² Tri-Centre loudspeaker may be freestanding or mounted on a stout shelf.
The Opus² Tri-Surround is designed for wall mounting. The unique 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.
SUB
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
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
Anatomy of a Midrange Dome 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 concentricity 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.
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.
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24
Opus²
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 380 mm
Security strap mounting
Opus²AvC
190 mm 190 mm
Opus² Tri-Sat
120mm
60mm
60mm
Opus²AvS
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.
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.
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.
13
14
Opus²
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.
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
125 mm
150 mm
125 mm
Connecting the Opus² AV System
The system may be mono-wired as shown, or bi-wired.
AvS
Right Left
RIGHT LEFT
REAR CENTRE
RIGHT LEFT
FRONT
SUB
WOOFER
Tri-
Surround
Right Left
AvC
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.
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.
RIGHT LEFT
REAR CENTRE
RIGHT LEFT
FRONT
SUB
WOOFER
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22
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.
AA
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
15
16
Opus²
Connecting Your Subwoofer
All Opus² Subwoofers have the same Rear Panel connectivity
INPUT
OUTPUT
LEFT RIGHT
LINE LEVEL
LEFT RIGHT
SPEAKER LEVEL INPUTS
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
ON
OFF
POWER AC 220-240V~50Hz 400W
FUSE T4AL250V
REAR PANEL CONNECTIONS
Mains Input
Mains Fuse
Mains Power Switch
Speaker Level Inputs
Line Level Outputs
Line Level Inputs
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.
Connect a mono RCA phono cable from the processor to the Subwoofer left line input.
INPUT
A/V
PROCESSOR
Stereo Line Level Connections
SUBWOOFER
OUTPUT
SUBWOOFER
OUTPUT
LEFT RIGHT
LINE LEVEL
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.
INPUT
AV PROCESSOR/
STEREO PREAMP
OUTPUT
Preamp Output
LEFT RIGHT
LINE LEVEL
SUBWOOFER
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.
TO FRONT RIGHT
LOUDSPEAKER
AMPLIFIER
FRONT
TO FRONT LEFT
LOUDSPEAKER
RIGHT LEFT
SUBWOOFER
LEFT RIGHT
SPEAKER LEVEL INPUTS
Looking After Your Loudspeaker
Opus²
Do not open the speakers; there are no user serviceable parts inside.
Never touch the drive units either with an object or your hands.
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.
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.
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20
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.
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
30º
Right Front
Left Surround
Left Back
90º
110º
150º
135º
Right Back
Right Surround
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.
The preset light will not light if no preset has been set up or if a preset is over-ridden.
LOW PASS FILTER SELECT
OFF
In Standby, the Volume,
Filter, Preset and Phase indicators are extinguished.
Rear panel lights stay on.
VOL UME
35Hz 45Hz 55Hz
MEMORY
65Hz 75Hz 85Hz
PHA SE
0
1 2
Volume: Press the Volume
+ key to increase the volume level. Press the
Volume - key to decrease the subwoofer volume.
3
POWER
4
1 8 0
The volume range on the front panel display varies from
00
(minimum) to
99
(maximum).
Low Pass Filters: Pressing the appropriate filter key will select the frequency at which the subwoofer 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.
Phase: This key toggles the subwoofer between 0º and 180º phase shift.
Presets: Four different settings of level, frequency and phase can be stored. Pressing and holding any of 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.
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).
Note: When brought out of standby for the first time, the unit will display the factory presets. Thereafter, bringing the unit out of 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.
When you bring the unit out of Standby or perform any operation using the handset the 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 and the purpose is to minimise any distraction from the programme in play. The light above the mains power switch on the rear panel will always remain illuminated whenever the subwoofer is switched on at the mains.
17
18
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
not
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: Make sure that all loudspeaker channels are connected in phase. If there is a doubt about the way the 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:
Phase at very low frequencies is not straightforward to detect. Initially we suggest you 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.
Low Pass Filter : If you are using a digital AV processor the initial subwoofer setting should be ‘OFF’ as the processor will have its own bass management system.
Setting Loudspeaker Sizes: Most digital AV Processors ask you to specify the size of speakers in the various channels. These are 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.
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
into
the subwoofer from the processor. The volume display should be around
50
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.
Opus²
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.
FRONT
LEFT
SUB
WOOFER
FRONT
RIGHT
CENTRE
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.
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