User manual B&W DM 302

[. . . ] the rear panel of the DMTM302 cabinet is formed into a wedge pattern similar to the interior of an anechoic chamber. This greatly helps to break up the regular internal cabinet volume that would otherwise encourage coloration from internal standing waves. homogeneous fibre cone bass/midrange drive units are used for minimum coloration and maximum definition. [. . . ] (figure 3) 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: Place the speakers on firm stands or bookshelves that place the tweeters approximately at ear level. place the speakers and the centre of the listening area approximately at the corners of an equilateral triangle. 5m (5ft) apart to maintain left-right stereo separation. Having the speakers too close to walls increases the level of bass relative to the midrange and may give a boomy quality to the sound. NOTE: The DMTM302 produces a static magnetic field that extends outside the cabinet boundary. As such The DMTM302 should not be placed within 0. 5m (20in) of equipment that may be affected by such a field, e. If you wish to use an aerosol cleaner, remove the grille first by gently pulling it away from the cabinet. Spray onto the cleaning cloth, not directly onto the cabinet. The grille fabric may be cleaned with a normal clothes brush after removing the grille from the cabinet. Avoid touching the drive units, especially the tweeter, as damage may result. Before fine tuning the installation, double check the polarity and security of the connections. If the level of bass is uneven with frequency, this is usually due to strong excitation of resonance modes in the room. Even small changes in the position of the speakers within the listening room can have a profound effect on the perceived sound quality by altering the excitation of these modes. Try mounting the speakers along a different wall. [. . . ] (figure 2) All connections should be made with the equipment turned off. connect the positive terminal on the speaker (marked + and coloured red) to the positive terminal on the power amplifier and negative (- , black) to negative (figure 2). Failure to observe correct polarity will result in poor sound balance and image focusing. [. . . ]