User manual B&W LCR6 S2

[. . . ] As a surround speaker: There are two ways of presenting surround information. You can either attempt to get good imaging in all directions or go for a more diffuse, ambient effect. The choice is made more difficult by the fact that some movies are produced assuming a diffuse surround presentation and others attempt to portray more precise imaging. In both cases position the speakers to the sides and behind the listeners. [. . . ] 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. (figure 6) 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. 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. When bi-wiring, incorrect connection can also impair the frequency response. Keep the total impedance below the maximum recommended in the specification and use a low inductance cable to avoid attenuation of the highest frequencies. All Applications The speaker may be used in either vertical or horizontal orientation. However, vertical orientation offers better horizontal dispersion and is to be preferred in most cases as this leads to a more stable image over a wide listening area. Horizontal orientation can be used with little detriment to the imaging if the speaker is used in the front centre position of a home theatre installation where the listeners are within 15° of the centre line ­ equivalent to 0. Leave at least 10cm clear space between the back of the speaker and the wall behind, to allow the port to operate properly. They give a degree of vibration isolation, especially useful if placing the speaker directly on top of a fairly flimsy television. The flat area on top of the television may be smaller than the base of the speaker, so position the feet accordingly. Home Theatre (figure 2) As a front centre speaker: 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. The inertness of the support used can affect the sound quality of the speaker. Moving the speakers further from the walls will reduce the general level of bass. Space behind the speakers also helps to create an impression of depth. Conversely, moving the speakers closer to the walls will increase the level of bass. If the bass is uneven with frequency it is usually due to the excitation of resonance modes in the room. [. . . ] 2-Channel Audio If the central image is poor, try moving the speakers closer together and adjusting the degree of toe-in. If you wish to use an aerosol cleaner, remove the grille first by gently pulling it away from 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 unit diaphragms, especially the tweeter, as damage may result. [. . . ]