User manual B&W CDM 7NT

[. . . ] Although many of these have been developed initially for the more expensive models, our "waterfall" design policy has seen them incorporated, wherever possible, elsewhere in the product range. Features to be found in the CDMTMNT Series include cabinets with contoured edges to reduce sound diffraction (the radiation of sound waves from sharp edges that interfere with and blur the direct sound from the drive units). an integral part of the CDMTM range is the use of Kevlar® cone bass/midrange drive units for lowest coloration and maximum definition. The treble units incorporate NautilusTM tube technology, which eliminates resonances behind the dome diaphragm. [. . . ] 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. ensure the speakers stand firmly on the floor. Whenever possible fit the spike feet supplied after you have optimised the positioning. These are designed to pierce through carpets to the floor surface. Initially, screw the lock nuts fully onto the spikes and screw the spikes fully into the threaded inserts in the base of the cabinet. If the cabinet rocks, unscrew the two spikes that do not touch the floor equally until the cabinet sits firmly on the floor, and lock the nuts against the cabinet. If there is no carpet and you wish to avoid scratching the floor surface, use a protective disc between the spike and the floor. (Figure 4) Some experimentation with the position of the speakers is well worthwhile to optimise the interaction between them and the listening room. however , as an initial guide: · Do not fit the spike feet until you have found the best position for the speakers. Having the speakers too close to walls increases the level of bass relative to midrange and may give a boomy quality to the sound. 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. We suggest you retain the packing for future use. check in the carton for: · 4 Spike feet with lock nuts · The speaker drive units create stray magnetic fields that extend beyond the boundaries of the cabinet. We recommend you keep magnetically sensitive articles (television and computer screens, computer discs, audio and video tapes, swipe cards and the like) at least 0. If you wish to use an aerosol cleaner, remove the grille first buy gently pulling it away from the cabinet. [. . . ] If you want to reduce the bass level without moving the speakers further from the wall, fit the (Figure 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. [. . . ]