User manual HARMAN KARDON HK610

[. . . ] The AC power adapter receives power as long as it is connected to the electrical outlet, even if the HK610 power switch is turned off. Always remove the AC power adapter from the electrical outlet before inspecting the adapter. [. . . ] If the HK610 speakers are not going to be used for a period of time, disconnect the AC power adapter from the electrical outlet. Always disconnect the AC power adapter from the electrical outlet before making any speaker connections. Do not drop them, apply excessive force to the controls, or put heavy items on top of them. To protect the HK610 speakers, avoid microphone feedback, continuous output from electronic musical instruments, or distorted output from any signal source. If the HK610 speakers are placed near a fluorescent light source or neon light fixtures, a hum in the speakers may be heard. Relocate the HK610 speakers farther from the fixtures to reduce or eliminate the noise. Turn up volume on right speaker. No sound from both speakers Speaker system turned off Volume control turned down Volume control turned down or off Turn up volume control slider in within software Microsoft Windows taskbar or the application program being used. Sound card failure Plug speakers into the CD-ROM drive headphone jack (you may need to adjust the CD-ROM drive volume). If speakers do not work, refer to sound card's troubleshooting documentation. Turn up software volume control sliders in application program being used. Headphones plugged in Defective speakers Does not play to sufficient volume Volume control sliders in the application program being used are too low for a given volume setting on the speakers Speakers not fully connected to computer sound card Left speaker not connected No sound from right speaker No sound from left speaker Check connection to computer. Check left speaker's connection to right speaker. 3 Harman Kardon HK610 Speakers (cont'd) Sound contains too much treble or bass Sound is distorted Incorrect setting for bass and treble controls Input source too high Adjust bass and treble controls so that dot on knobs is at 12 o'clock position. Reduce input level from source using sound card control or volume control sliders in Windows taskbar. [. . . ] NOTE: Dell does not support using subwoofers with Harman Kardon speakers. NOTE: Dell does not support using subwoofers with Harman Kardon speakers. [. . . ]