User manual B&W CDS6 S3

[. . . ] Indeed, you may even change the characteristic for different types of programme and, as the total energy into the room is the same in both modes, no recalibration of the installation is necessary when switching between them. In dipole mode, the front tweeter is disconnected; the two side firing drivers are brought into operation and the crossover frequency to the bass unit is lowered. The side units are connected out of phase with one another, which creates a wedge-shaped null zone at right angles to the wall. If the listeners sit within this zone, they become less aware of the location of the speakers and hear more reflected sound; hence the diffuse nature of the sound field. [. . . ] all formats The surround speakers will normally be placed approximately 60cm (2 ft) above ear height. (figure 4) Higher positions may be used if necessary and the CDS6 S3 may readily be fitted into a cavity ceiling if desired. The speakers are handed in terms of which side the positive and negative dipole lobes are projected. Indication is via an arrow on the label at the back of the speaker, which points towards the positive lobe. (figure 5) To optimise the smoothness of sounds panning from the front of the room to the Surround speakers generally fall into two main types ­ those that one might describe as 'normal' speakers ­ so-called monopoles, where the sound comes from a set of drive units mounted on the front of the enclosure ­ and those that give a more diffuse sound field, such as dipoles. Most multi-channel music is recorded with home entertainment in mind and is monitored using monopole surround speakers, whatever the multi-channel recording format. This enables better location of side and rear images, although the formation of such images is never quite as precise as it is between the front speakers. Most films are originally balanced for cinemas, where a large number of speakers spread around the auditorium are used to create the surround sound field. In that case there are more surround speakers than there are discrete channels of information and a less precise image is created that gives an all-enveloping effect. Dipoles and similar diffuse speakers are better at recreating this type of sound field in the home, but using fewer speakers to do it. Image positioning with these types of speaker is never as precise as it can be with monopoles. However, they do have the 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. 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 Back and vice versa when speakers are used in dipole mode, we recommend that the side speakers have their positive lobes (arrows) pointing towards the front of the room and the rear speakers have their positive lobes (arrows) pointing towards the centre of the rear wall. 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. The initial turn of the screw will cause the clamps to swing out into position and further turning will draw them towards the back of the wall. In retrofit situations without the PMK for protection, take care not to over tighten the clamps, otherwise the plasterboard will crush and weaken the fixing. (figure 11) Decorating is best carried out at this stage, before the baffle and drivers are fitted. Never paint over the grille fabric as this will clog the pores and impair the sound. The combination of a black grille frame in front of a black baffle ensures that the cross pattern of the grille frame is least visible, even with white cloth. [. . . ] Suitable materials are fibreglass or mineral wool matting, as sold for heat insulation, or polyester fibre used for filling duvets (comforters). Foam pads may also be used, but these must be of the open cell variety. Use the switch on the front baffle to select between monopole and dipole modes. All surround speakers dipole It would be unusual, but not impossible, to set side speakers to monopole and rear speakers to dipole. [. . . ]