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ASW608の取扱説明書・マニュアル [全104ページ 12.87MB]

10The lightning flash with arrowheadsymbol within an equilateral triangle, isintended to alert the user to thepresence of uninsulated "dangerousvoltage" within the product's enclosurethat may be of sufficient magnitude toconstitute a risk of electric shock topersons. The exclamation point within anequilateral triangle is intended to alertthe user to the presence of importantoperating and maintenance (servicing)instructions in the literatureaccompanying the product.WARNING: To reduce the risk of fire or electricshock, do not expose this apparatus to rain ormoisture.Do not expose the device to rain, use it near water orin damp or wet conditions, or place containers on itcontaining liquids which might spill into any openings.When setting up the device, make sure that the ACoutlet you are using is easily accessible. If sometrouble or malfunction occurs, immediately turn off thepower switch and disconnect the plug from the outlet.Even when the power switch is turned off, electricity isstill flowing to the product at the minimum level. Whenyou are not using the device for a long time, makesure to unplug the power cord from the wall AC outlet.IntroductionDear customer,Thank you for choosing Bowers & Wilkins. Please readthis manual fully before unpacking and installing theproduct. It will help you to optimise its performance.B&W maintains a network of dedicated distributors inover 60 countries who will be able to help you shouldyou have any problems your dealer cannot resolve.Environmental InformationAll B&W products are designed to complywith international directives on theRestriction of Hazardous Substances(RoHS) in electrical and electronic equipment and thedisposal of Waste Electrical and Electronic Equipment(WEEE). These symbols indicate compliance and thatthe products must be appropriately recycled orprocessed in accordance with these directives. Consultyour local waste disposal authority for guidance.Carton ContentsCheck in the carton for:1 Mains cable1 Accessory pack containing:4 M6 spike feet4 M6 rubber feet4 Lock nuts (10mm across flats)InstallationThe subwoofer has been designed both for HomeTheatre installations and to augment the bassperformance of 'full range' speakers in 2-channelaudio systems. All audio installations require somethought in installation if they are to reach their fullperformance potential and this manual will guide youthrough the process.The subwoofer requires connection to the mainspower supply, so it is important that you familiariseyourself with the safety instructions and heed all thewarnings. Keep this manual in a safe place for futurereference.The Subwoofer Connection and ControlPanel (Figure 1)1. Status indicator.2. On, Auto, Stand-by switch.3. Line-level input volume.4. Speaker level input volume.5. Low-pass filter frequency.6. Low-pass filter selection switch.7. Bass extension switch.8. Equalisation switch.9. Phase reverse switch.10. 12V trigger input.11. Line level input sockets (left and right).12. Speaker level input binding posts (left and right).13. Mains input.14. External fuse holder.Subwoofer ApplicationsThe primary function of a subwoofer is to reproducesignals from an audio-visual processor Low FrequencyEffects (LFE) channel. In addition, the processor maybe configured to divert the low bass portion fromsome or all of the other channels and add it to the LFEinformation. This is usually done by selecting "small"loudspeakers in the processor set-up procedure.In 2-channel audio applications a subwoofer is used toextend the bass response lower than that provided bythe satellite speakers. The subwoofer low-pass filtershould be set so that the subwoofer takes over as theoutput of the satellite speakers falls.Subwoofer Positioning and InstallationThe ear poorly perceives the source location of lowfrequency sound so the position of subwoofers in thelistening room is generally less critical compared tofull-range speakers. However, best results are usuallyobtained if the subwoofer is placed between the leftand right speakers or in the vicinity of one of them. Iftwo subwoofers are used, it is best to put one nearthe left and one near the right speaker. Placing asubwoofer behind the listening position, even in multi-channel surround sound installations, generally resultsin inferior imaging, but may be an acceptablecompromise if domestic considerations dictate.As with all speakers, the proximity of room boundariesaffects the sound of a subwoofer. Bass volumeincreases as more surfaces come into close proximitywith the speaker. Unlike full-range speakers, however,the overall system balance can be corrected by7276 608_610_610XP manual.qxd 8/12/08 12:11 Page 10

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