User manual ALTEC LANSING 3156 LF SPEAKER

[. . . ] Outdoor Use -- Warning: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. Ventilation -- The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or placed in a built-in installation, such as a closed bookcase or cabinet that may impede the flow of air through the ventilation openings. Heat -- The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat. [. . . ] Power-Cord Protection -- Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them. Pay particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance. Grounding or Polarization -- The precautions that should be taken so that the grounding or polarization means of an appliance is not defeated. Cleaning -- The appliance should be cleaned only with a polishing cloth or a soft dry cloth. Never clean with furniture wax, benzine, insecticides or other volatile liquids since they may corrode the cabinet. Non-Use Periods -- The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time. Object and Liquid Entry -- Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. Damage Requiring Service -- The appliance should be serviced by qualified service personnel when: · The power-supply cord or the plug has been damaged. · Objects have fallen, or liquid has been spilled into the appliance. · The appliance does not appear to operate normally or exhibits a marked change in performance. The subwoofer contains no stereo information and sound is non-directional. As a result, the subwoofer does not necessarily have to be placed in any particular relationship to the satellites. Placing the subwoofer on the floor close to 5 Use of Controls · On/Off Switch. The unit is turned on/off by pressing both 4 How to Enhance Presentations with Dialogue A CD player or other audio source can be plugged into the unused INPUT. Mixing of the computer audio output with another audio source can be accomplished by using the volume control or ON/OFF switch on the second audio source. A typical example may be as follows: A lecturer may want to interject dialogue into a multimedia presentation. If the lecturer has a wireless FM microphone system, the output of the microphone receiver can be connected to the unused input on the 3156 LF SPEAKER. When the lecturer wishes to make a comment, he either turns on the microphone switch to speak or he can raise or lower the microphone volume control to mix his voice with the computer audio program. Figure 2 Troubleshooting When first installing a new system some simple instructions may be overlooked which can cause the unit to be inoperative. Please make the following checks: ·Make sure all connecting plugs between the satellite speakers, subwoofer (if applicable) and computer are fully seated. [. . . ] Please make the following checks: ·Make sure all connecting plugs between the satellite speakers, subwoofer (if applicable) and computer are fully seated. ·Make sure the power switches on the satellites and subwoofer (if applicable) are turned on. ·It is possible to test the unit by pulling out the audio cable that is connected to the computer and connecting it to an alternate audio source such as a portable CD player. ·When the unit is operative, vibrations from the speaker sound can cause other loose objects to vibrate. [. . . ]