Wharfedale Pro SW 300 User manual

Instruction Manual
SW 300
Powered Subwoofer
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Drive Unit
Amplifier Power
Input Impedance
(Line input)
Low Pass Filter Range
Phase Adjustment
Dimensions Overall
H x W x D mm
H x W x D inches
Maximum SPL (ref 1m)
Frequency Response
(Boundary position)
300mm
(12“)
300 W RMS
10kω
35 - 85 Hz (10Hz steps)
+ Bypass
0° - 180° switchable
520 x 390 x 450
20.5 x 15.4 x 17.7
114 dB
SW 300
Subwoofer
25 - 90 Hz (-6dB)
SPECIFICATIONS
The name ‘WHARFEDALE' is a registered trademark of Wharfedale
International Ltd.
Wharfedale has a policy of continuous product development and reserves
the right to change specification without notice.
Wharfedale is a member of the International Audio Group.
USA
IAG America, Inc.
15 Walpole Park
South
Walpole
MA 02081
CANADA
Korbon Trading Ltd
6800 Kitimat Road
Units 19-20
Mississauga
Ontario
Tel: [phone]
UK
Wharfedale International Ltd.
IAG House, Sovereign Court,
Ermine Business Park,
Huntingdon,
Cambs PE29 6XU,
England.
Tel:[phone]
Fax: [phone]
AUTHORISED SERVICE CENTRES
For information on other authorised service centres worldwide contact
Wharfedale International in the U.K.
A worldwide distributor list is available on the Wharfedale website:
www.wharfedale.co.uk
COMPLIANCE
This Wharfedale product complies with the relevant clauses enshrined in the following standards and directives in force at the time of the
introduction of the product.
!EU Directives: 89/336/EC, 72/23/EEC: Safety: EN60065 (CB Scheme): Emissions: EN55013, EN61000 Immunity: EN55020:2002.
!USA: UL 6500:2002. Approved under the verification provision of FCC Part 15 as a Class B Digital Device.
!CANADA: CAN/CSA-E60065-00
Performance and specifications subject to alteration
Television picture colour is distorted Subwoofer too close to TV. (Switch off system and TV. Move units away. Leave 15 mins. Switch on)
Excessive bass distortion at low volumes Subwoofer level set too high; LFE level set too high; Subwoofer incorrectly wired
Excessive or distorted bass at high levels System level set too high; Bass control set too high; Subwoofer too close to room corners
Popping or thumping from the subwoofer System level set too high; Subwoofer level set too high; LFE level set too high
Indistinct sound; Poor localisation of
effects. Poor localisation of dialogue
One or more loudspeakers is out of phase
(Read the manual for correct connection procedure)
Distorted or rattling sounds at high levels System level set too high; Objects placed on subwoofer; Objects too close to subwoofer
Sound lacks bass content
Bass reproduction indistinct Subwoofer not switched on; Subwoofer phase incorrect; Subwoofer crossover control too low
No Sound System not switched on; Speaker cables shorting terminals out; Wrong source selected
Symptom Possible Cause
Subwoofer will not respond to commands Handset batteries weak; handset too far away; line of sight is impeded
TROUBLESHOOTING
If your system is not working properly please work through this checklist before returning a unit to your dealer. Before investigating a problem, always
switch off the system at the mains.
Wharfedale SW 300 Subwoofer User Guide
S300man Iss 1 0904

SETTING UP TWO SUBWOOFERS
General notes
Site the subwoofers so that they enhance the system bass
response but do not cancel each other out.
!A well-sited pair of subwoofers for stereo applications
will be adequately sited for Home Cinema
applications.
!A second subwoofer raises the bass output level 6dB
when operating in Home Cinema but not in Stereo.
!Both subwoofers should be in line of sight to the
listening seat as both answer to one remote handset.
!When operating two subwoofers, do all setups and
operations on one handset When allocating presets
make sure that the same preset (e.g. Home Cinema on
preset 1) is allocated to each subwoofer.
Home Cinema:
!As AV Processors produce a common subwoofer
channel, considerations of Left and Right do not
apply, but with spaced subwoofers each helps to fill in
the troughs caused by in-room standing waves,
smoothing the bass and giving the sound greater
intensity, ‘air’ and depth.
!Set up the position of each subwoofer separately with
the other one switched off. After you have set both
subwoofers up, reduce the front panel volume level of
each subwoofer by 3 points. Complete the final
adjustment with both subwoofers switched on. You
may need to make some small adjustments to the
position of each sub for best results. We suggest you
enter this final setting as a Home Cinema preset.
Stereo:
!Each subwoofer should be located as near as possible
to its partnering loudspeaker. The smaller the main
speakers, the more necessary this becomes.
!It is easier to set up each subwoofer with a mono
source playing through one channel with the other
channel turned off.
!Complete the adjustment by ear using a mono source
with both channels and subwoofers operational. We
suggest you enter this setting as a Stereo preset.
Wharfedale SW 300 Subwoofer User Guide
harmful interference to radio communications. However, there is no
IMPORTANT SAFETY INFORMATION guarantee that interference will not occur in a particular installation. If
Read these instructions. this equipment does cause harmful interference to radio or television
Keep these instructions. reception, which can be determined by turning the equipment off and on,
Heed all warnings. the user is encouraged to try to correct the interference by one or more of
Follow all instructions. the following measures:
Do not use this apparatus near water. !Reorient or relocate the receiving antenna.
Clean only with dry cloth. !Increase the separation between the equipment and receiver.
Do not block any ventilation openings. !Connect the equipment into an outlet on a circuit different from that
Install in accordance with the manufacturer's instructions. to which the receiver is connected.
Do not install near any heat sources such as radiators, heat registers, !Consult the dealer or an experienced radio/TV technician for help.
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: 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.
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: The mains power switch for this 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: 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
ESSENTIAL INFORMATION FOR 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.
The wires in the mains lead are coloured in accordance with the following
code: Green and Yellow - Earth: Blue - Neutral: Brown - Live.
As the colours of the wires in the mains lead may not correspond with the
markings identifying the terminals in the replacement mains plug,
proceed as follows:
The wire coloured Blue must be connected to the terminal marked with
the letter "N" or coloured Black. The wire
coloured Brown must be connected to
the terminal marked with the letter "L" or
coloured Red. The wire coloured Green
and Yellow must be connected to the
terminal marked with the letter ‘E’,or
coloured Green, or Green and Yellow, or
marked with the Earth symbol
TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER-REMOVEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
CAUTION!
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ADVERTISSEMENT: RISQUE DE CHOC ELECTRIQUE-
NE PAS OUVRIR
This symbol indicates that dangerous voltage
constituting a risk of electric shock is present within
this unit.
This symbol indicates that there are important
operating and maintenance instructions in the
literature accompanying this unit.
LIVE
(BROWN)
NEUTRAL
(BLUE)
EARTH
(GREEN/YELLOW)
FUSE
GENERAL GUIDANCE
DO NOT connect the mains power to any signal input terminal on the
subwoofer Control Panel.
ALWAYS turn down the volume control on your amplifier or receiver
before turning the equipment on or off.
distortion may damage your loudspeakers and subwoofer. The position
of the Volume Control on your amplifier is NOT a reliable guide as to ‘how
loud’ your equipment will play. Allow your system ample ‘headroom’.
Do not operate your subwoofer closer than 450mm from the TV to avoid
DO NOT change any connections to the subwoofer without first distorting the colour picture. If this occurs, switch the TV set off. After 15
switching off the power to all the components in your AV system. minutes switch on again: colour balance should now be restored.
To minimise hum and mains interference ensure that low level (line level)
signal cables are well screened. Avoid routing low-level signal cables
DO NOT use your amplifier at its maximum volume setting. The resulting close to or parallel with mains power wiring.
RIGHT CHANNEL LEFT CHANNEL
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HOME CINEMA LINE CONNECTION
STEREO LINE CONNECTION A
STEREO LINE CONNECTION B
HIGH LEVEL SPEAKER CONNECTION
your Wharfedale dealer using the original packing to ensure safe
CARE AND MAINTENANCE shipping.
The loudspeaker cabinets can be cleaned with a damp cloth or with a The terms of your guarantee may vary from country to country but in all
spray furniture polish and a soft cloth. Apply the spray sparingly to the locations the guarantee excludes:
cloth and then polish the cabinet. Never apply spray directly to the All damage caused through accident, misuse, wear and tear, neglect,
cabinet. incorrect installation, adjustment or repair by unauthorised personnel.
Liability for damage or loss occurring in transit to or from the purchaser.
GUARANTEE & SERVICE Wharfedale will not be liable for any consequential damage, loss or
In the unlikely even that your unit develops a fault you should return it to injury, arising from or in conjunction with this equipment.
Wharfedale SW 300 Subwoofer User Guide
Page 2 Page 7
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SUBWOOFER
LEFT RIGHT
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LEFT RIGHT
FRONT
LEFT
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The subwoofer has to blend with the main speakers: if you place the lower the subwoofer volume level.
subwoofer where it amplifies the irregularities of the room or the main Note: If any channels are set to ‘Small’ the subwoofer must be on when
speakers the result will be bloated, coloured bass. If acoustic guitar and the system is playing otherwise there will be reduced bass , as well as no
male voice sounds coloured when the subwoofer is operating and less LFE.
coloured when in standby, you need to address the positioning first Stereo reproduction
before adjusting any controls. Low Pass Filter: The low pass filter should be set having regard to the
Loudspeaker Phasing size and low frequency extension of the main speakers. The role of the
Make sure that all loudspeaker channels are connected in phase. Nothing subwoofer is to extend the bass response of the system not to increase
is more certain to defeat a Home Cinema or Stereo setup involving a the overall bass level. If the loudspeakers are large the LPF should be set
subwoofer than one(or more) channels being out of phase. In Stereo, if low, a value around 45-55 Hz is a good place to start. With smaller
there is a doubt about the way the loudspeakers are connected, check speakers this can be increased, up to 85Hz for very small bookshelf
their phasing by playing a mono source - the sound should appear from a units. As always the final value is determined by listening.
point midway between the two loudspeakers. If this position is indefinite, Low-level listening
reverse the connections to one of the loudspeakers. Correctly connected Our ears are far more sensitive to midrange frequencies (2-5 kHz) than
loudspeakers give a definite centre sound source with fuller bodied tenor bass frequencies. Very low bass and especially percussive bass is ‘felt’
and bass registers. rather than heard. At low sound levels bass frequencies appear to
Setting the Phase of the Subwoofer attenuate faster than midrange and treble. As the level increases this
Phase at very low frequencies is not straightforward to detect. Initially bass roll-off decreases and at loud volumes is negligible. The pioneering
we suggest you temporarily set the low pass filter to ‘OFF’ and the phase work was done in the 1930’s by Fletcher and Munson who produced a
to 0º and play some bass heavy music in Stereo through the main series of ‘Equal Loudness Contours’. Occasionally we may wish to listen
speakers and the subwoofer. From the listening position, switch the to a normally loud piece of music at a low level but with retention of the
phase between 0º and 180º. The setting which appears to give the greater bass information. There may be a case for assigning a preset for low
bass output is correct. Now follow the instructions below for setting the level listening where the subwoofer volume is set somewhat higher and
low pass filter. the LPF is set a little lower - as always this is for individual judgement.
Home Cinema Systems Testing the system By Ear
Low Pass Filter The simplest way to test the system is to play, at a moderate level, music
with deep consistent bass. Switching the subwoofer in and out of
If you are using a digital AV processor the initial setting should be ‘OFF’ Standby should cause change of the depth of bass, and the ambience will
as the processor will have its own bass management system. Most also alter. If there is a significant change in bass volume, or a noticeable
digital AV Processors ask you to specify the size of speakers in the step in the bass response, or an increase in coloration when the
various channels. These are usually ‘Large’ or ‘Small’. This sets the bass subwoofer is playing, the setup needs to be refined further. By entering
management for the system. Unless your loudspeakers are large floor different settings in different presets, you will be able readily to identify
standing units, you should choose 'Small' for the Front channels, as the the most favourable combination.
subwoofer is going to be better at providing clean, deep bass. Choose
'Small' for the surround channels and also for the Centre channel, so that Using an SPL Meter
any bass from these channels will be directed to the subwoofer. Set the This is done with a test disc or signal generator and is beyond the scope
‘Subwoofer’ option on the processor to 'On’ or 'Yes'. of this handbook except to observe that SPL meter settings are weighted
After experimenting with various sources you may need to adjust the LPF ‘A’, ‘B’ and ‘C’ - these correspond to the inverse of the Fletcher-Munson
settings. The goal is to ensure the subwoofer blends seamlessly into the Equal Loudness Contours at 40, 70 and 100dB. For normal listening
sound stage. Setting the subwoofer to Standby should reduce the bass levels the SPL meter is usually set to ‘C’ and the response set to slow. If
extension, not change the bass level - as always personal taste plays an you wish to use this setup method you should definitely seek your
important part. dealer’s advice beforehand.
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 is 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,
In 1932, when Gilbert Briggs founded the Wharfedale Wireless
Works, his company was at the leading edge of an exciting new
technology which was dedicated to bringing the pleasure of music
and entertainment to a wide range of people. As the technology
advanced Wharfedale gave many music lovers their first taste of
High Fidelity, mounting a series of live sound demonstrations
which excited the audio world and heralded the era of the modern
hi-fi loudspeaker.
Today Wharfedale still takes the same uncompromising
approach to the design and manufacture of every loudspeaker
system, using high quality components and state-of-the-art
testing to ensure consistently high performance. And that
means that you can continue to count on the quality of all
Wharfedale products.
Loudspeaker Manufacturers since 1932
Page 6 Page 3
PRELIMINARIES REAR PANEL CONNECTIONS
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.
Retain the packing materials for future use or return them to your dealer.
If you decide not to keep the packing, please dispose of it having regard
to any recycling regulations in your area.
Please retain the user manual and the purchase receipt for future
reference. If you transfer this equipment to a third party, please ensure all
the instructions are passed on with the product.
Fitting the feet
Carefully invert the subwoofer. Protect the top by placing it on a soft
surface such as a towel. Open the polythene bag and slide it part-way
down the cabinet.
The subwoofer is provided with two short spikes and two long spikes.
The longer spikes have an adjustable top cap for levelling. Fit the spikes
as shown. When all four screw feet have been fitted, stand the subwoofer
upright and remove the bag.
Connecting the Subwoofer
Connecting to a Digital AV processor
Tighten the front feet with a suitable wrench. With the aid of a spirit level,
screw each rear foot in and out until the subwoofer is level (side to side
and front to back) and firmly supported on all four feet. Tighten each rear
foot to its top cap with a suitable wrench to lock the assembly in position. Stereo Line Level Connections
Note: When using spiked feet take care not to drag the subwoofer and be Stereo line level connections will be necessary where there is no
careful not to pierce objects or cables which may be under carpets, etc. dedicated single subwoofer output, but where there is either :
INSTALLATION !A stereo subwoofer line output or a separate preamp output.
!In stereo systems where there is a suitable preamplifier line 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 not suitable. If you are in doubt, consult your dealer.
Stereo Connections: Connect a stereo RCA phono cable from the line
output of the preamp to the Subwoofer line inputs.
Power Connections
Before connecting your subwoofer check that the mains voltage marked
on the amplifier panel is correct for your mains supply.
!230 volt products - 220 volts to 240 volts
!115 volt products - 110 volts to 120 volts
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 this lead to the Left line input of the
Subwoofer as shown below.
Positioning the subwoofer
Although the unit may be placed almost anywhere in the room, we
recommend that is placed in front of the listener central to the listening
position. There should be a mains outlet within easy reach. There should
be a line of sight between the listener and the front of the subwoofer
otherwise the remote functions will not work. We suggest you initially
position the subwoofer about 20cm (8 inches) from the wall. Placing it
close to the wall will increase the bass; placing it across a room corner
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 a variety of
locations and sources before making a final decision.
Experiment
See Pgs. 4 and 5.
Mains Input Speaker (High) Level Inputs
Mains Fuse Line Level Outputs
Mains Power Switch Line Level Inputs
A/V PROCESSOR
SUBWOOFER
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WHARFEDALE INTERNAWHARFEDALE INTERNATIONAL LTD,HUNTINGDON, UNITED KINGDOMTIONAL LTD,HUNTINGDON, UNITED KINGDOM
LEFT RIGHT
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Wharfedale SW 300 Subwoofer User Guide Wharfedale SW 300 Subwoofer User Guide
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Pre Out - Main In Connections There are two methods of connecting the subwoofer:
If you use a separate stereo pre and power amplifier, or an amplifier A: Ensure the Front loudspeakers are correctly connected.
where the pre and main amplifier can be separated, connect the sub- Using one of the additional twin core cables, connect the Left Speaker
woofer as shown. There are two alternative methods. Terminals on the sub bass unit to the Front Left speaker terminals on the
A: You will need two screened RCA ‘Y’ adaptors and two single RCA amplifier. Connect the Red (+) speaker terminal on the amplifier to the
phono cables. Red (+) terminal on the subwoofer. Connect the Black (-) speaker
terminal on the amplifier to the Black (-) terminal on the subwoofer. Now
Remove the Pre-Main links on your amplifier. Connect the socket connect the Right Speaker terminals on the subwoofer to the Front Right
(common) of an RCA ‘Y’ adaptor to one of the mono cables. Connect one
leg of the ‘Y’ adaptor to the Left Channel Pre Out socket on the amplifier speaker terminals on the amplifier.
and the other leg to the Left Channel Main In socket. Connect the
remaining plug of this combination to the Left Channel Line Level Input
on the sub-woofer. Repeat this for the Right Channel.
B: You will need two stereo (or four single) screened RCA cables.
Connect a Stereo cable from the Line Level Inputs of the sub-woofer to
the Pre Out sockets of the amplifier. Now connect a second Stereo cable B: Alternatively you may connect the subwoofer to the Front speakers.
from the Line Level Outputs of the sub-woofer to the Main In sockets of
the amplifier. Make sure that the Right and Left Channels are not mixed
up! The sub-woofer is now inserted within the system loop.
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 If your speakers are bi-wired: You should ensure that you connect the
need two extra twin core cables. subwoofer to the BASS terminals ONLY.
Choose a good quality audio speaker
cable of reasonable size. Avoid using
cheap ‘bell’ or ‘zip’ cables. Audio
speaker cable has a polarity stripe or
rib along one conductor to simplify
connecting your speakers.
Split the cable at each end to a depth
of 25mm. Strip about 7mm of
insulation from each end and lightly
twist to gather the wire strands.
The Speaker Level connectors are
screw terminals located on the
control panel. Unscrew a terminal
and insert the cable into the hole at the
base. Re-tighten the terminal
securely. Make sure that the terminal
grips the bare wire and there are no
loose strands which could touch
adjacent terminals.
When routing any cables to loudspeakers do not run them across open
floor spaces where they may cause danger to people and pets. Route
them safely, around room boundaries if necessary.
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Wharfedale SW 300 Subwoofer User Guide Wharfedale SW 300 Subwoofer User Guide
Volume: Press the Volume + key to increase the volume level. Press the
OPERATING YOUR SUBWOOFER Volume - key to decrease the volume level of the subwoofer. The volume
Remote Handset range on the front panel display varies from 00 (minimum) to 99
All control functions are carried out using the remote handset. (maximum).
Installing batteries 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
The handset operates on two LR6 (AA) 35Hz-85Hz in 10 Hz increments. When ‘OFF’ is selected the subwoofer
batteries which are supplied. The battery operates over its full designed range. Pressing other keys lowers the
compartment is located at the rear of the maximum operating frequency. The Low Pass Filter value should be
handset. Unwrap the batteries and slide the chosen having regard to the nature of the Front speakers and
cover off the handset. Place the batteries in programme material. Follow the Setup Notes on Page 6 and the
the handset, the correct orientation is shown instruction manual of your AV processor (if used) for more guidance.
on the diagram. When the batteries are
installed, replace the cover. 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).
Switching on the Subwoofer Note: When brought out of standby for the first time, the unit will display
Check that all the connections to the the factory presets. Thereafter, bringing the unit out of standby will
subwoofer have been properly made and revert it to the operational state last used. If you switch the power on and
that the system volume control is at off at the rear panel while the unit is in standby, the unit will power up to a
minimum. Plug the supplied power cord into normal operating state (i.e. not in standby). To enter standby, again
the mains socket on the rear panel. Plug the press the Standby key.
mains plug into the wall socket and switch
the power on. Now switch the subwoofer on SETTING UP YOUR SUBWOOFER
with the rest of your system. The subwoofer General Notes
on/off switch has a rocker action; press the Your subwoofer is most likely to be used with two typical programme
upper part to switch the equipment on and sources, music and movies. The setup for these two very different
the lower part to switch it off. When switched sources may be different if best results are to be achieved. Please read
on the light above the power switch will glow these setup notes in conjunction with your processor and speaker
and the subwoofer will be operational. manuals.
Operation - Controls and Functions Setting up of the subwoofer should be performed with all tone controls
and filters on the AV processor ‘flat’.
Control functions are carried out using the remote handset. To operate, the Listening Rooms and Subwoofer Positioning:
handset must be pointed at the subwoofer and be in direct line of sight.
Listening rooms are not ideal. Most rooms are reverberant with some
Standby: The Standby key brings the subwoofer in and out of Standby. parallel walls. Because of room geometry and construction there will be
The drawing below shows a typical front panel display during operation. areas with severe peaks at some frequencies and severe troughs at
others. These peaks and troughs are called ‘standing waves’ and if you
site loudspeakers in such areas the response will be highly non-linear.
With subwoofers this situation is exacerbated by the fact that 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.
The low frequency response of the subwoofer and its blend with the main
loudspeakers is greatly affected by positioning. Although bass is
The preset light will not light if no preset has been set up or if a preset enhanced by walls or corners, so often is coloration. As the drive unit
has been over-ridden. faces downward, the floor will influence the sound. The surface under
In Standby mode all the lights on the subwoofer front panel are the subwoofer should be stable and unobstructed. If the carpet is thick,
extinguished. The rear panel light remains on to show the unit is consider placing the subwoofer on a solid surface such as a marble slab.
powered.
SUBWOOFER CONTROL
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SUBWOOFER
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