User manual B&W DM 605 S2

[. . . ] 12 Power Cord Protection ­ Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed on or against them, paying particular attention to cords at plugs, convenience receptacles and the point where they exit from the appliance. 13 Cleaning ­ The appliance should be cleaned only as recommended by the manufacturer. 14 Non-use Periods ­ The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time. 15 Object and Liquid Entry ­ Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. [. . . ] If no signal is detected after a period of approximately 5 minutes, the amplifier switches automatically to standby and the LED glows red. Full range input (figure 4) There are 2 pairs of terminals at the back of the speaker which permit bi-wiring if desired. On delivery, the separate pairs are connected together with high-quality links for use with a single 2-core cable. For single cable connection, leave the links in place and use either pair of terminals on the speaker. (figure 4a) Ensure the positive terminal on the speaker (marked + and coloured red) is connected to the positive output terminal of the amplifier and negative (marked ­ and coloured black) to negative. To bi-wire, remove the links by loosening the terminal caps and use a separate 2-core cable from the amplifier to each pair of terminals (figure 4b). When bi-wiring, incorrect connection can also impair the frequency response. Keep the total impedance below the maximum recommended in the specification and use a low-inductance cable to avoid attenuation of the highest frequencies. Low-frequency effects (LFE) input (figure 5) The LFE or subwoofer output of your decoder is connected to the LFE input of one of the speakers using line level coaxial cable terminated by an RCA Phono plug. Connect the second speaker LFE input socket to the LFE link out socket of the first speaker. Connection to the mains power supply Ensure that the voltage indicated on the amplifier panel matches that of the power supply. Should you need to change the setting, perhaps because you have moved to an area having a different supply voltage, slide the voltage selector switch to the other position WHILE THE SPEAKER IS DISCONNECTED FROM THE MAINS POWER SUPPLY. A 3-core mains power lead appropriate to the country of sale is supplied that fits the IEC mains input socket (figure 6A) in the amplifier panel. The same value mains fuse is used whatever the supply voltage and it is fitted in a tray at the bottom of the mains input socket (figure 6B). Before fine tuning, double check that all the connections in the installation are correct and secure. Moving the speakers further from the walls will reduce the general level of bass. Space behind the speakers also helps to create an impression of depth. Conversely, moving the speakers closer to the walls will increase the level of bass. If the bass is uneven with frequency it is usually due to the excitation of resonance modes in the room. 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 8) 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. [. . . ] With smaller screens it may be more realistic to have the left and right speakers closer together than you might for audio alone. Adjust the levels of the three front speakers to get a smooth transition of sounds as they pan across the screen. Adjust the level of the surround speakers so that, except for special effects, your attention is not unduly attracted to them. Sit in all likely listening positions when deciding on the optimum levels. [. . . ]