[. . . ] Please read this manual fully before unpacking and installing the product. [. . . ] Even small changes in the position of the speakers or the listeners can have a profound effect on how these resonances affect the sound. If the central image is poor, try moving the speakers closer together or toeing them in so they point at or just in front of the listeners (figure 3). If the sound is too harsh, increase the amount of soft furnishing in the room (for example use heavier curtains), or reduce it if the sound is dull and lifeless. Test for flutter echoes by clapping your hands and listening for rapid repetitions. Reduce them by the use of irregular shaped surfaces such as bookshelves and large pieces of furniture. If you have a carpet, use carpet-piercing spikes and adjust them to take up any unevenness in the floor. 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. [. . . ] Reserves the right to amend details of the specification without notice in line with technical developments. [. . . ]