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Speaker care
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Speaker care
Wipe the cabinet occasionally with a dry silica or soft cloth. For heavier dirt, after dampening a
soft cloth in a weak solution of mild detergent and water and wringing it out dry, wipe off the dirt.
Then, dry immediately with a clean cloth. Do not use rough material, thinners, alcohol or other
chemical solvents or cloths since these could damage the finish, remove the panel lettering, or
cause discoloration. If you are using a chemical cloth, always follow the instructions that come
with the cloth. For dust accumulated on grilles, use a vacuum cleaner or brush it off.
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Use with a TV set or computer
In general, Braun tubes used for color television sets and computers are extremely sensitive and
can be affected even by the magnetism of the earth. If a speaker system is used near them, there-
fore, discoloration or distortion of pictures will occur. To allow use with a color television set or
computer, this speaker system is provided with magnetic shielding. Even so, discoloration may
still result, depending on the installation environment. If discoloration occurs, turn off the power of
the television set or computer, wait for 15 to 30 minutes and then turn it on again. This activates
the self-demagnetizing function of the television set or computer, improving the display condition.
Note
If discoloration persists even after performing this remedy, move the speaker apart from the televi-
sion set or computer. Discoloration may also be caused when a magnet or other magnetizing
object exists near the television or computer because of the combined effect.
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Precaution on use
This speaker system can handle the specified input power when it is used for ordinary music
reproduction. If the following abnormal signals are fed to the speaker, however, an overcurrent
may flow in the internal circuits, causing burning or breakage of the wires even if the input power
is below the specified rating.
1. Noise produced when FM station is not tuned in
2. Sound produced when fast-forwarding cassette tape deck
3. High-frequency sound generated by an oscillator, an electronic musical instruments, etc.
4. Oscillating amplifier signals
5. Special test signals produced by audio checking CD, etc.
6. Sound produced when connecting or disconnecting audio connection cables (Always turn off
the amplifier’s power before connecting or disconnecting cables.)
7. Howling when a microphone is used
Note:
The L-DR7 DVD Theater System performance is optimized when the subwoofer (SWA-155X),
speakers (D-M7 and D-M3), and DVD AV controller (PDR-155) are used. Onkyo is not responsi-
ble for malfunctions caused by using speakers or receivers from other manufacturers.
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About memory preservation
The PDR-155 has an auxiliary power source to preserve memory and prevent settings from being
erased during power outage. The PDR-155 preserves memory for about two weeks with the
power cable disconnected. However, the clock and timer settings are cancelled.
L-DR7_E.book Page 10 Tuesday, December 24, 2002 3:10 PM