User manual B&W CWM 8I

[. . . ] Placement near a wall/ceiling junction or in a corner is to be avoided as it may give rise to too much bass and a boomy quality to the sound. If possible, keep the speakers more than 0. 5m (20in) from the ceiling edges. The following sections give guidance on optimum positioning, but this may be modified in line with domestic constraints. [. . . ] The speakers should be positioned with the tweeters at a little above ear height. The spacing between them will depend on the size of the room and distance to the listeners. As a general rule they should not be closer to the listener than 1. 5m (5Ft) and the distance between them should not exceed their distance from the listeners. Having the speakers and the listeners approximately at the corners of an equilateral triangle is not a bad rule to follow. If the speakers are paced too far apart, a hole-in-the-middle effect may become apparent. Too close and the panoramic effect will be lost, accompanied by a reduction in depth. For Home theatre Installations, the speakers should not be closer together than the width of the screen and their height should be approximately at centre screen height. When choosing cable, keep the total electrical impedance (out and back) below the maximum recommended in the specification. Ask your dealer for advice, as the optimum cable will depend on the length required. Cut off excess length and tie down loose cable to prevent rattles. UNPACKING (figure 1) · Fold the top carton flaps right back and invert the carton and contents. Check the contents: · 2x Baffle with drive units, crossover · 2x Loudspeaker grille · 1x Alignment template · 2x Paint mask We suggest you retain the packaging for future use. Remove the grilles from the wall frames and, to avoid damage, keep them in their plastic bags (and preferably in the carton) away from the work area until you are ready to fit them. POSITIONING ­ NEW CONSTRUCTION VERSUS RETROFIT Check that there is no conflict with other installations (pipe work, air conditioning, powercabling etc. ). In existing construction, use a stud-finding tool to map the construction accurately and a pipe detector to scan the proposed installation position. Avoid installing the speakers in the same cavity as flimsy ducting, which may be induced to rattle. [. . . ] Avoid installing the speakers in the same cavity as flimsy ducting, which may be induced to rattle. The speakers are designed to operate satisfactorily in a wide range of cavity volumes, ideally above 15 litres (0. 5 cu ft). DAMPING THE WALL CAVITY In addition, loosely fill the whole section of the cavity with wadding. Fibreglass and mineral wool matting supplied for heat insulation are suitable, but not closed cell foam or expanded polystyrene. [. . . ]