Alpine CDA-9855R, CDA-9853R Recalling the Stored Crossover Settings, About Time Correction, 21-EN

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Select the Crossover (X-OVER) mode by sliding your finger on the GlideTouch bar to the left or right. Press the GlideTouch bar under the Crossover (X-OVER) mode.
Press FUNC. or the GlideTouch bar to activate the preset mode.
Select any one of the preset numbers (1 through 6) by sliding your finger on the GlideTouch bar to the left or right. Press the GlideTouch bar under the desired preset to recall the stored contents.
Press and hold MENU for at least 2 seconds to return to normal mode.

Recalling the Stored Crossover Settings

1 Press and hold MENU for at least 2 seconds.

2

3

4

5

If MENU is pressed while adjusting or setting items in the MENU mode, the unit will return to the previous selection screen.

By pressing the GlideTouch bar under RETURN in the MENU mode, the unit returns to the normal mode.

About Time Correction

The distance between the listener and the speakers in a car vary widely due to the complex speaker placement. This difference in the distances from the speakers to the listener creates a shift in the sounds image and frequency characteristics. This is caused by the time delay between the sound reaching the listener’s right versus the left ear.

To correct this, the CDA-9855R/CDA-9853R is able to delay the audio signal to the speakers closest to the listener. This effectively creates a perception of increased distance for those speakers. The listener can be placed at an equal distance between the left and right speakers for optimum staging.

The adjustment will be made for each speaker in 0.1 ms steps.

Example 1. Listening Position: Front Left Seat

Adjust the time correction level of the front left speaker to a high value and the rear right to zero or a low value.

5.1ms 0.5m

2.25m

The sound is not balanced because the distance between the listening position and the various speakers is different.

The difference in distance between the front left speaker and the rear right speaker is 1.75 m (68-7/8").

Here we calculate the time correction value for the front left speaker in the diagram on the above.

Conditions:

Farthest Speaker – listening position : 2.25 m (88-9/16")

Front left speaker – listening position : 0.5 m (19-11/16")

Calculation: L = 2.25 m – 0.5 m = 1.75 m (68-7/8") Time correction = 1.75 ÷ 343*1 1000 = 5.1 (ms)

*1 Speed of sound: 343 m/s (765 mph) at 20˚C

In other words, giving the front left speaker a time correction value of 5.1 ms makes it seem as if its distance from the listener is the same as the distance to the farthest speaker.

Time correction eliminates the differences in the time required for the sound to reach the listening position.

The time of the front left speaker is corrected by 5.1 ms so that its sound reaches the listening position at the same time as the sound of other speakers.

Example 2. Listening Position: All Seats

Adjust the time correction level of each speaker to almost the same level.

1 Sit in the listening position (driver’s seat, etc.) and measure the distance (in meters) between your head and the various speakers.

2 Calculate the difference between the distance to

the farthest speaker and the other speakers.

L = (distance to farthest speaker) – (distance to other speakers)

3 Divide the distances calculated for the speakers by the speed of sound (343 m/s (765 mph) at 20˚C).

These values are the time correction values for the different speakers.

21-EN

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Contents CDA-9855R DE CDA-9853R Contents Installation and Connections Operating Instructions Never Attempt the Following On handling Compact Discs CD/CD-R/CD-RW Touch or press the desired position on the GlideTouch bar About the GlideTouch Bar OperationMove your finger on the GlideTouch bar to the left or right Getting Started Detaching and Attaching the Front Panel Press TUNE/A.ME to select the tuning modeRadio Listening to RadioTuning to Preset Stations Manual Storing of Station PresetsAutomatic Memory of Station Presets Station Title Search FunctionPress FUNC. to activate the audio function mode Setting RDS Reception Mode and Receiving RDS StationsRecalling Preset RDS Stations Receiving RDS Regional Local StationsReceiving Traffic Information PI Seek SettingPTY Programme Type Tuning Receiving Traffic Information While Playing CD or Radio12-EN Priority PTY Programme TypeDisplaying Radio Text GlideTouch bar under P.PTYPlayback 13-ENScanning Programmes Repeat PlayX. Random Play 14-ENQuick Search Searching from CD TextFile/Folder Name Search concerning MP3/ WMA About MP3/WMATerminology 16-ENSetting Users EQ mode Sound SettingEqualizer Presets 17-ENAdjust the level by turning the Rotary encoder Adjusting and Storing the Parametric Equalizer CurveAdjusting and Storing the Graphic Equalizer Curve Press SOURCE/POWER to set the band width QAbout the Crossover Way modeRecalling the Stored Equalizer Curve 19-ENAdjust the output level by turning the Rotary encoder Adjusting and Storing the Crossover SettingsPress SOURCE/POWER to adjust the slope WAY SystemExample 1. Listening Position Front Left Seat Recalling the Stored Crossover SettingsAbout Time Correction Example 2. Listening Position All SeatsDisplay Setup menu is displayed Setting the Time Correction UnitAdjusting and Storing the Time Correction 22-ENAbout the MX indicator display CDA-9853R only Recalling the Stored Time Correction SettingsSetting the MX Mode 23-EN24-EN Other FunctionsDisplaying the Title/Text Press TitleAbout Title and Text Titling Discs/Stations25-EN Press Title and select the Title DisplayIf a Mono Amplifier is Connected Setting Amplifier LinkErasing Disc Title/Station Title If a 4ch Amplifier is ConnectedIf you want to use colours other than the above Setting the Multicolour IlluminationChanging the Lighting Colour of All the Buttons 27-EN28-EN About i-PersonalizeData Downloading File name of download data shall be AU*****.MP3Setup menu of the selected item is displayed General SettingPlaying MP3/WMA Data Play Mode 29-ENTuner Setting 30-ENDisplay Setting Audio Setting31-EN Searching for a desired Song Demo Setting32-EN Searching by album name Searching by PlaylistSearching by artist name 33-ENDisplaying the Text Random Play Shuffle M.I.X34-EN Playing MP3 Files with the CD Changer Optional Changer OptionalControlling CD Changer Optional Multi-Changer Selection OptionalRemote Control 36-ENCase of Difficulty Battery Replacement CDA-9855R onlyInformation BasicIndication for CD Changer AudioIndication for CD Player 38-EN39-EN SpecificationsIndication for iPod Mode Bottom side of playerInstallation and Connections 40-EN41-EN InstallationRemoval Connections 42-ENAmplifier Link / Vehicle Display Interface Connector 43-EN44-EN To prevent noise/interference in the audio systemAlpine CD Changers Give You More CHM-S630 CHA-S634 CHA-1214Appendix Q9 no