User manual B&W CWM 8 INSTALLATION

[. . . ] Inspired by the company's founder, the late John Bowers, this quest has entailed not only high investment in audio technology and innovation but also an abiding appreciation of music and movies to ensure that the technology is put to maximum effect. These CWM speakers are primarily intended for in-wall applications, but may equally well be used in-ceiling. They feature adjustment for tweeter output level so that their performance may be tailored to a wide variety of practical conditions. However, no matter how good the speakers themselves, they will not deliver their full potential unless properly installed. [. . . ] Front speakers for audio or home theatre Best imaging for 2-channel is obtained when the speakers are mounted in the wall approximately at ear height and making an angle between 40º and 60º at the centre of the listening position. (figure 1) For multi-channel home theatre the left and right speakers should be approximately 0. 5m (20 in) to the left and right of the screen and they and the centre speaker should be as near the centre height of the screen as possible. For a centre speaker, choose between above or below the screen depending on which is nearer ear height. The speakers should be positioned 60cm (2 ft) or more above head height. This pack should contain: 2x wall frame/baffle with drive units and crossover 2x grille with backing scrim fabric 2x paint mask 2x mounting template The horizontal angle to the centre of the listening position should be approximately 120º round from the centre of the screen. 1 channel Position two speakers to the sides in line with the centre of the listening area and one centrally behind the listeners (figure 4) 7. 1 channel Position two speakers to the sides in line with the centre of the listening area and two behind the listeners, subtending an angle of approximately 40º. Check that there is no conflict with other installations (pipe work, air conditioning, power cabling etc. In existing drywall construction, use a stud-finding tool to map the construction accurately and a pipe detector to scan the proposed installation position. Refer to the section drawing of the speaker and ensure that there is enough clearance behind the plasterboard (sheetrock) for the clamps to swing out fully. Once the board is fitted, the inner flange of the PMK serves as a guide for a hole router or saw. If extra acoustic isolation to adjoining rooms is required or some protection against the spread of fire, use the optional back box in place of the PMK. Follow the instructions with the back box for fitting and running the cable. When fitting the plasterboard, use mastic between the sheets and the back box to avoid rattles. Rout or saw out the speaker aperture using the backbox flange as a guide. Depending on the diameter of the router, you may need to square off the corners with a saw. All connections should be made with the equipment switched off. connect the cable , observing the correct polarity. With the grille removed, position the speaker in the aperture and screw in the 6 screws visible from the front. These screws automatically swing out clamping dogs that locate behind the mounting surface. (figure 9) Ensure that they have located properly before fully tightening the screws. [. . . ] avoid touching the drive units , as damage may result. Before painting the grille, peel off the fabric scrim from the back, otherwise the pores will get clogged and the sound will be impaired. If the scrim does not stay in place properly when replaced, spray the back of the grille mesh (NOT the scrim) with a light coating of 3M SprayMount adhesive or similar. In order for the bass performance not to be compromised, the speaker requires a cavity volume of at least 10 litres (0. [. . . ]