Assessments - 1, GPA: 3
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Stray Magnetic Fields The speaker drive units are magnetically shielded such that the stray magnetic field outside the boundaries of the cabinet, except the front, is too low to cause distortion of the television picture in the vast majority of cases. There are, however, some extremely sensitive televisions – some that even have to be adjusted according to their alignment with the earth’s magnetic field. If you have a problem, first degauss the television set with the speaker in place. Some have a button especially for this purpose. If not, switch off the set at the mains for 15 minutes and switch on again. Merely putting the set into standby mode is not sufficient. If you still have a problem, try moving the speaker either forwards or backwards a little to get a more favourable juxtaposition, or space the speaker further from the television until the distortion disappears. Because of the higher stray magnetic field in front of the speakers, we recommend you keep magnetically sensitive articles (computer discs, audio and video tapes, swipe cards and the like) at least 0.2m from the speaker. Connections (Figures 2 & 3) All connections should be made with the equipment switched off. There are 2 pairs of terminals at the back of the speaker which permit bi-wiring if desired. On delivery, the separate pairs are connected together with high-quality links for use with a single 2-core cable. For single cable connection, leave the links in place and use either pair of terminals on the speaker. Ensure the positive terminal on the speaker (marked + and coloured red) is connected to the positive output terminal of the amplifier and negative (marked – and coloured black) to negative. Incorrect connection can result in poor imaging and loss of bass. To bi-wire, remove the links by loosening the terminal caps and use a separate 2-core cable from the amplifier to each pair of terminals. This can improve the resolution of low-frequency detail. Observe the correct polarity as before. When bi-wiring, incorrect connection can also impair the frequency response. Ask your dealer for advice when choosing cable. Keep the total impedance below the maximum recommended in specification and use a low inductance cable to avoid attenuation of the highest frequencies. Fine tuning 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. Sit in all likely listening positions when deciding on the optimum levels. If you want to reduce the bass level without moving the speaker further from the wall, fit the foam bung in the port tube. (Figure 4) Consult your decoder manual for further information on how to set the levels. 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. Aftercare The cabinet surface usually only requires dusting. If you wish to use an aerosol cleaner, remove the grille first by gently pulling it away from the cabinet. Spray onto the cleaning cloth, not directly onto the cabinet. The grille fabric may be cleaned with a normal clothes brush whilst the grille is detached from the cabinet. Avoid touching the drive units, especially the tweeter, as damage may result. Francais Garantie limitee Cher Client, Bienvenue a B&W. Ce produit a ete concu et fabrique en vertu des normes de qualite les plus rigoureuses. Toutefois, en cas de probleme, B&W Loudspeakers et ses distributeurs nationaux garantissent une main d’oeuvre (exclusions possibles) et des pieces de rechange gratuites dans tout pays desservi par un distributeur agree de B&W. Cette garantie limitee est valide pour une periode de cinq ans a compter de la date d’achat ou une periode de deux ans pour les composants electroniques, y compris les haut-parleurs amplifies. Conditions 1 La garantie est limitee a la reparation de l’equipement. Les frais de transport ou autres, les risques associes a l’enlevement, au transport et a l’installation des produits ne sont pas couverts par cette garantie. 2 La ...