Fujitsu ECLIPSE CD8445 Owner's Manual page 143

Tweeter settings (Tweeter)
You can select the tweeter installation location and whether or not a
tweeter is being used or not, allowing you to select the optimum
time alignment settings automatically.
Turn the [SEL] button to select Tweeter.
The selected item will be highlighted.
Press the [SEL] button.
The mode will change to tweeter setting mode.
Turn the [SEL] button to select the setting item.
When the button is turned, the setting item changes in the
following order and the selected item is highlighted.
NO Dash
Press the [SEL] button.
The selected settings will take effect.
Press the [RTN] button.
Other time alignment items can be set at this time.
Press the [RTN] button.
At this time, other adjustments can also be made in advance
mode.
Press the [SOUND] or [RTN] button to exit sound
adjustment mode.
If the front speakers have been installed to the dash panel, you can set
the tweeter setting to "Dash" even if no tweeter has been installed.
How to operate the Sound Adjustment Mode
[SOUND] button
Door
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[SEL] button
[RTN] button
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