User manual B&W AS2

[. . . ] However, if something does go wrong with this product, B&W Loudspeakers and its national distributors warrant free of charge labour (exclusion may apply) and replacement parts in any country served by an official B&W distributor. This limited warranty is valid for a period of five years from the date of purchase or two years for electronics including amplified loudspeakers. Advise where the equipment can be serviced. You can call B&W in the UK or visit our web site to get the contact details of your local distributor. [. . . ] All sound installations require some planning and experimentation if you are to get the best out of the products used and this manual will guide you in this process. As the subwoofer is connected to the electricity power supply, it is important that you familiarise yourself with the safety instructions and heed all warnings. Keep this manual in a safe place for future reference. What the subwoofer does application: Home Theatre The primary function of the subwoofer is to reproduce signals from the Low Frequency Effects (LFE) channel. In addition, the processor may be configured to divert the low bass portion of some or all of the other channels and add it to the LFE information by configuring those speakers to `small' in the processor set-up procedure. Application: 2-channel audio The subwoofer is used to extend the bass response beyond that provided by the satellite speakers. In most cases, best results are obtained if the satellite speakers are run full range as normal directly from the power amplifier. The subwoofer lowpass filter is then set so that its output rises as that of the satellite speakers falls naturally. Positioning the subwoofer Because the subwoofer produces only lowfrequency sounds, positioning is less critical in some respects compared to full-range speakers. Directional information is much less precise and you have more choice where to place the speakers to good effect. This said, best results are obtained if the subwoofer is placed between the left and right speakers or in the vicinity of one of If you use two subwoofers, it is best to put one near the left and one near the right speaker. Placing the subwoofer behind the listeners, even in surround sound installations, generally gives inferior imaging, but may be an acceptable compromise if domestic considerations dictate. As with all speakers, the proximity of room boundaries affects the sound. Bass is generally increased as more surfaces come into close proximity with the speakers. Unlike full-range speakers, however, you can always restore the correct overall system balance by adjusting the volume level of the subwoofer. The more boost you get from the room, the less hard the speaker has to work; but there is a down side. If the subwoofers cannot be placed close to the main speakers, better results may be obtained by feeding the left and right channels to both subwoofers, connecting both subwoofers as shown in figure 5 and described above in the section "Using one subwoofer". We recommend that you switch the subwoofer on after any equipment feeding signals to it. Similarly, when switching off, switch the subwoofer off first. The MODE standby/auto/on switch (7) does not isolate the amplifier completely from the power supply. it maintains a low-power input to an auxiliary sensing circuit. The switch (7) operates as follows: O On: With the switch in this position, the amplifier remains permanently on, and the light glows green. [. . . ] If you wish to use an aerosol cleaning spray, do not spray directly on the cabinet; spray onto the cloth. Remove the grille first so that the cloth does not become stained, but be careful not to disturb the drive unit. The grille itself may be cleaned using a soft brush. When in use, objects left on top of the subwoofer are liable to rattle. [. . . ]