parts that could result in a fire or electric shock. Never spill liquid of any kind on the product. Do not place any object containing liquid on top of the product.
15Cleaning – Unplug the product from the wall outlet before cleaning. Refer to the cleaning instructions in the section of the manual titled “Aftercare”.
16Attachments – Do not use attachments not recommended by the product manufacturer, as they may cause hazards.
17Accessories – Do not place this product on an unstable cart, stand, tripod, bracket or table. The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket or table recommended by the manufacturer or sold with the product. Any mounting of the product should follow the manufacturer’s instructions and should use a mounting accessory recommended by the manufacturer.
18Moving the appliance – A product and cart combination should
be moved with care.
Quick stops, excessive
force and uneven surfaces may cause the
product and cart combination to overturn. Check that there are no cables under the carpet that may be damaged by the spike feet. Do not walk the product on the spike feet as this may cause them to become detached from the cabinet and cause damage. Take care not to impale yourself with the spike feet.
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20Servicing – Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.
21Damage Requiring Service – Unplug this product from the wall outlet and refer servicing to qualified personnel under the following conditions:
a When the
b If liquid has been spilled or objects have fallen into the appliance.
c If the product has been exposed to rain or water.
d If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions, as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation.
eIf the product has been dropped, or damaged in any way.
fWhen the product exhibits a distinct change in performance – this indicates a need for service.
22Replacement Parts – When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorised substitutions may result in fire, electric shock or other hazards.
23Mains fuses are located inside the amplifier and replacement should be entrusted to an authorised B&W agent. Replacement fuse types are shown in the specification.
24Safety Check – Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.
25Magnetic fields – The product creates a stray static magnetic field. Do not place any object that may be damaged by this magnetic field (eg cathode ray tube televisions or computer monitors, audio and viseo tapes and swipe cards) within 0.5m (2 feet) of the appliance. The appliance may cause distortion of cathode ray tube images beyond this distance.
26The only means of completely disconnecting the product from the power supply is by removing the power cord from the wall outlet. The wall outlet must remain freely accessible at all times while the apparatus is in use.
Introduction
Thank you for purchasing this B&W Active Subwoofer.
Since its foundation in 1966, the continuing philosophy of B&W has been the quest for perfect sound reproduction. Inspired by the company’s founder, the late John Bowers, this quest has entailed not only high investment in audio technology and innovation but also an abiding appreciation of music and the demands of film sound to ensure that the technology is put to maximum effect.
This subwoofer has been designed for Home Theatre installations and to augment the bass performance of ‘full range’ speakers in
Please read through this manual fully before using the subwoofer. All sound installations require some planning and experimentation if you are to get the best out of the products used and this manual will guide you in this process.
As the subwoofer is connected to the electricity power supply, it is important that you familiarise yourself with the safety instructions and heed all warnings.
Keep this manual in a safe place for future reference.
B&W loudspeakers are distributed to over 60 countries worldwide and we maintain an
international network of carefully chosen and dedicated distributors. If you have a problem, which your dealer cannot resolve, our distributors will be more than willing to assist you.
Unpacking (figure 1)
The easiest way to unpack the subwoofer and avoid damage is as follows:
•Open the carton flaps right back and invert the carton and contents.
•Lift the carton away from the product.
We recommend that you retain the packaging for future use.
In addition to this manual, the carton should contain:
1 Subwoofer
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Inputs, controls and indicators
The input panel (figure 2)
1SPEAKER IN sockets
2LINE IN socket
3LINK OUT socket
4Power supply rating
5Power cord
The control panel (figure 3)
6LED indicator
7Standby/auto/on switch (MODE)
8Equalisation switch (EQ)
9Phase switch (PHASE)
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11Volume control (VOL)
What the subwoofer does
Application: Home Theatre
The primary function of the subwoofer is to reproduce signals from the Low Frequency Effects (LFE) channel. In addition, the processor may be configured to divert the low bass portion of some or all of the other channels and add it to the LFE information by configuring those speakers to ‘small’ in the processor
Application: 2-channel audio
The subwoofer is used to extend the bass response beyond that provided by the satellite speakers. In most cases, best results are obtained if the satellite speakers are run full range as normal directly from the power amplifier. The subwoofer low- pass filter is then set so that its output rises as that of the satellite speakers falls naturally.
Positioning the subwoofer
Because the subwoofer produces only low- frequency sounds, positioning is less critical in some respects compared to
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