HTM61 - Speaker BOWERS & WILKINS - Free user manual and instructions

USER MANUAL HTM61 BOWERS & WILKINS

EU Declaration of Conformity..................38 Technical Specifications........39-40 HTM6x OM Inner Iss5.qxd 19/2/07 2:58 pm Page 1English Owner’s manual Dear customer, Thank you for choosing B&W. Please read this manual

ully before unpacking and installing the product. It will help you to optimise its performance. B&W maintains a network of dedicated distributors in over 60 countries

ho will be able to help you should you have any problems your dealer cannot resolve. Environmental Information B&W pro ducts are designed to comply with international directives on the Restriction of

azardous Substances (RoHS) in electrical and electronic equipment and the disposal of Waste Electrical and Electronic Equipment (WEEE). The crossed wheelie bin symbol indicates compliance and that the products must be appropriately recycled or processed in accordance with these directives. Carton Contents Check in the carton for: 1 Foam plug. 4 Self-adhesive rubber pads. Positioning If using a projection television with an acoustically transparent screen, place the speaker behind the centre of the screen. Otherwise position it directly above or below the screen, whichever is closest to ear level. Align the front of the speaker approximately level with the screen. The speaker is best used mounted on a rigid shelf or wall bracket or on a rigid floor stand. If the speaker is to be placed either directly on top of a television or in a rack shared with other AV equipment fix the 4 self-adhesive pads to the base of the speaker. They provide a degree of vibration isolation. The flat area on top of the television may be smaller than the base of the speaker, so position the feet accordingly. Stray Magnetic Fields The speaker drive units are magnetically shielded such that the stray magnetic field strength outside the boundaries of the cabinet, except the front, is too low to cause distortion of CRT television pictures in the vast majority of cases. LCD and plasma screens are not affected by magnetic fields. Ther e are, however, some extremely sensitive CRT televisions – some that even have to be adjusted according to their alignment with the earth’s magnetic field. If you have a pr oblem, first de-magnetise the television set with the speaker in place. Some have a button especially for this purpose. If such feature is not fitted, switch of f the set at the mains for 15 minutes and switch on again – again with the speaker in place. Merely putting the set into standby mode will not be sufficient. If you still have a problem, try moving the speaker either forwards or backwards a little to get a more favourable alignment, or space the speaker further from the CRT television until the distortion disappears.

ecause of the higher magnetic field in front of the speakers, magnetically sensitive articles (computer

iscs, audio and video tapes, swipe cards, etc) should be kept at least 0.2m (8 in) from the speaker. Connections

ll connections should be made with the equipment switched off. There are 2 linked pairs of terminals on the back of the

peaker. For conventional connection the terminal links should remain in place (as delivered) and just one pair of terminals connected to the amplifier. For bi-wire

onnection the terminal links should be removed and

ach pair of terminals connected to the amplifier independently. Bi-wiring can improve the resolution of low-frequency detail. Figures 1a and 1b illustrate conventional and bi-wire connection. Ensure that positive terminals on the speaker (marked + and coloured red) are connected to the positive output terminal on the amplifier and that negative terminals on the speaker (marked – and coloured black) are connected to the negative output terminal on the amplifier. Incorrect connection can result in poor imaging and loss of bass. Ask your dealer for advice when selecting speaker cable. Keep its total impedance below the maximum recommended in the speaker specification and use a low inductance cable to avoid attenuation of high frequencies. Fine Tuning Before fine tuning, make sure that all the connections in the installation are correct and secure. For greatest realism in home theatre installations it is important to balance the speakers and adjust the acoustic image to match the size of the screen. With smaller screens it may be more realistic to have the left and right speakers closer together than you might for audio alone. Adjust the levels of the three front speakers to get a smooth transition of sounds as they pan across the screen. Adjust the level of the surround speakers so that, except for special effects, your attention is not unduly attracted to them. Listen from a variety of probable listening positions when deciding on the optimum levels. Moving the speaker further from the wall will generally reduce the volume of bass. Conversely, moving the speaker closer to the walls will increase the volume of bass. If you want to reduce the volume of bass without moving the speaker further from the wall, fit the foam plug in the port tube as illustrated in Figure 2. If the bass seems uneven with fr equency this will most probably be due to resonance modes in the listening

oom. Even small changes in the position of the speakers or the listening position can have a pr ofound effect on how these resonances affect the sound. Try moving the listening position a little backwar ds or forwards. The presence and position of large pieces of furniture can also influence resonance modes.

HTM6x OM Inner Iss5.qxd 19/2/07 2:58 pm Page 2I f the sound is too bright, increasing the amount of soft furnishing in the room (heavier curtains for

xample) may help balance the sound. Conversely, reducing the amount of soft furnishing may help

righten a dull sound.

ome rooms suffer from "flutter echoes" – echoes that

bounce" between parallel room boundaries. Flutter echoes can colour the sound of the speakers in the

oom. Test for flutter echoes by standing in the middle of the room and clapping your hands. Flutter echoes can be reduced by placing irregular shaped items or

on-reflective surfaces, bookshelves, rugs or pictures for example, on one of the offending walls or floor. Ensure that speaker stands are upright and firm on the

loor. Use carpet piercing spikes if appropriate and adjust them to take up any unevenness. Running-in Period The performance of the speaker will change subtly during the initial listening period. If the speaker has been stored in a cold environment, the damping compounds and suspension materials of the drive units will take some time to recover their correct mechanical properties. The drive unit suspensions will also loosen up during the first hours of use. The time taken for the speaker to achieve its intended performance will vary depending on previous storage conditions and how it is used. As a guide, allow up to a week for the temperature effects to stabilise and 15 hours of average use for the mechanical parts to attain their intended design characteristics. However, longer run-in periods (as long as a month) have been reported and there is evidence to suggest that this has little to do with the speaker changing and more to do with the listener getting used to the new sound. This is especially so with highly revealing speakers such as these where there may be a significant increase in the amount of detail compared with what the listener has previously been used to; the sound may at first appear too "up front" and perhaps a little hard. After an extended period of time the sound will seem to mellow, but without losing clarity and detail. Aftercare The cabinet surfaces usually only require dusting. If you wish to use an aerosol or other cleaner, remove the grille first by gently pulling it away from the cabinet. Spray aerosols onto the cleaning cloth, not directly onto the product. Test a small area first, as some cleaning products may damage some of the surfaces. Avoid products that are abrasive, or contain acid, alkali or anti-bacterial agents. Do not use cleaning agents on the drive units. The grille fabric may be cleaned with a normal clothes brush whilst the grille is detached from the cabinet. A void touching the drive units, especially the tweeter, as damage may result. Limited Warranty This product has been designed and manufactured to the highest quality standards. However, if something

oes go wrong with this product, B&W Group Ltd. and its national distributors warrant free of charge labour

exclusion may apply) and replacement parts in any country served by an official B&W distributor. This limited warranty is valid for a period of five years

rom the date of purchase or two years for electronics

ncluding amplified loudspeakers. Terms and Conditions

The warranty is limited to the repair of the equipment. Neither transportation, nor any other costs, nor any risk for removal, transportation and

nstallation of products is covered by this warranty.

This warranty is only valid for the original owner. It is not transferable. 3 This warranty will not be applicable in cases other

han defects in materials and/or workmanship at the time of purchase and will not be applicable: a. for damages caused by incorrect installation, connection or packing, b. for damages caused by any use other than correct use described in the user manual, negligence, modifications, or use of parts that are not made or authorised by B&W, c. for damages caused by faulty or unsuitable ancillary equipment, d. for damages caused by accidents, lightning, water, fire heat, war, public disturbances or any other cause beyond the reasonable control of B&W and its appointed distributors, e. for products whose serial number has been altered, deleted, removed or made illegible, f. if repairs or modifications have been executed by an unauthorised person. 4 This guarantee complements any national/regional law obligations of dealers or national distributors and does not affect your statutory rights as a customer. How to claim repairs under warranty Should service be required, please follow the following procedure: 1 If the equipment is being used in the country of purchase, you should contact the B&W authorised dealer from whom the equipment was purchased. 2 If the equipment is being used outside the country of purchase, you should contact the B&W national distributor in the country of residence who will advise where the equipment can be serviced. You can call B&W in the UK or visit our web site to get the contact details of your local distributor. To validate your warranty, you will need to produce the warranty booklet completed and stamped by your dealer on the date of purchase. Alternatively, you will need the original sales invoice or other proof of ownership and date of pur chase.

echnical features Description Drive units Frequency range Frequency response Dispersion Sensitivity Harmonic distortion Nominal impedance Crossover frequency Recommended amplifier power Max. recommended cable impedance Dimensions Net weight

brand fibre cone FST

brand fibre cone bass Flowport

Magnetic shielding 3-way vented-box system 1x ø25mm (1 in) aluminium dome high-frequency 1x ø150mm (6 in) woven Kevlar

cone bass -6dB at 30Hz and 50kHz 38Hz - 22kHz ±3dB on reference axis Within 2dB of reference response Horizontal: over 20

arc 90dB spl (2.83V, 1m) 2nd and 3rd harmonics (90dB, 1m) <1% 90Hz - 22kHz <0.5% 120Hz - 20kHz

350Hz, 4kHz 30W - 150W into 8

on unclipped programme

echnical features Description Drive units Frequency range Frequency response Dispersion Sensitivity Harmonic distortion Nominal impedance Crossover frequency Recommended amplifier power Max. r ecommended cable impedance Dimensions Net weight

brand fibre cone bass/midrange Flowport

Magnetic Shielding 2-way vented-box system 1x ø25mm (1 in) aluminium dome high-frequency 2x ø130mm (5 in) woven Kevlar

cone bass/midrange -6dB at 45Hz and 50kHz 55Hz - 22kHz ±3dB on reference axis Within 2dB of reference response Horizontal: over 20

4kHz 30W - 120W into 8

on unclipped programme

Height: 170mm (6.7 in) Width: 438mm (17.3 in) Depth: 308mm (12.2 in) 9.1kg (20.1 lb) HTM62 HTM61 HTM6x OM Inner Iss5.qxd 19/2/07 2:58 pm Page 40Kevlar is a registered trademark of DuPont. Nautilus is a trademark of B&W Group Ltd. Copyright © B&W Group Ltd. E&OE Printed in China. B&W Group (UK Sales) T +44 1903 221 500 E uksales@bwgroup.com B&W Group North America T +1 978 664 2870 E marketing@bwgroupusa.com B&W Group Asia Ltd T +852 2 869 9916 E info@bwgroup.hk B&W Group Ltd Dale Road Worthing West Sussex BN11 2BH England T +44 (0) 1903 221800 F +44 (0) 1903 221801 info@bwgroup.com www.bowers-wilkins.com II11401 Issue 5