User manual B&W NAUTILUS 801

[. . . ] It will help you to optimise its performance. B&W maintains a network of dedicated distributors in over 60 countries who will be able to help you should you have any problems your dealer cannot resolve. Wood is a natural material and veneers vary between batches. Although supplied as single units, systems with consecutive serial numbers (odd number lower) have veneer-matched cabinets. [. . . ] If the equipment is being used outside the country of purchase, you should contact B&W national distributor in the country of residence who will advise WARNING: Do not lean the speaker on its back when out of the packing as damage to the terminals may result. We suggest you retain the packing for future use. Because you do not want to see a multitude of cables in the room, short cables are provided to link both positive and both negative speaker terminals together. When using the links, insert the spade into the slot in the side of one terminal and the crimped pin into the round side hole in the other. There is enough clearance to insert a spade connector from the amplifier into the same terminal as the crimped pin. ensure each positive terminal on the speaker (coloured red) is connected to the positive output terminal of the amplifier and negative (coloured black) to negative. Incorrect connection can result in poor imaging and loss of bass. When bi-wiring, do not use the linking cables. Take extra care with the polarity of the connections as incorrect connection can also impair the frequency response through the bass-midrange crossover and, if the links are left in place, may cause damage to the amplifier by shorting its output terminals. 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. Wish to use an aerosol cleaner, remove the cloth covered grilles first and spray onto the cleaning cloth, not directly onto the cabinet. do not attempt to remove the tweeter grille. Remove both cloth covered grilles by gripping at the outer edges and gently pulling away from the cabinet. To replace the bass grille, locate the pegs in the holes in the bass unit trim ring (NautilusTM801) or the cabinet (NautilusTM802) and push into place. To replace the midrange grille, locate the central peg in the hole in the tip of the bullet shaped dispersion modifier at the centre of the drive unit and push the centre of the grille firmly. the outer rim of the grille is held in place by spring tension in the spokes of the grille fret. The grille fabric may be cleaned with the brush provided while the grille is detached from the cabinet. Avoid touching the drive unit diaphragms, especially the tweeter, as damage may result. [. . . ] If the central image is poor, try moving the speakers closer together or toeing them in so they point at or just in front of the listeners. (figure 4) If the sound is too harsh, increase the amount of soft furnishing in the room (for example use heavier curtains), or reduce it if the sound is dull and lifeless. Test for flutter echoes by clapping your hands and listening for rapid repetitions. Reduce them by the use of irregular shaped surfaces such as bookshelves and large pieces of furniture. [. . . ]