Alpine Comprehensive Guide for 9812RB, 9815RB, 9812 and CDA Models

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To store the adjusted contents

1)Press and hold any one of the preset buttons (1 through 6) for at least 2 seconds into which you wish to store the adjusted contents.

6 For setting another channel, repeat the steps 2 to 5.

7 After setting, press T.CORR/X-OVER to return to normal mode.

About the 2way/3way system

You can switch to 2way/3way system mode with the 2way/3way switch on the side of the unit (page 44).

When setting to “3 WAY ”:

The unit can be operated in a 3 way system.

F/R Sub. W

 

When setting to “F/R/Sub.W ”:

 

 

 

3WAY

 

The unit can be operated in a 2 way system.

 

 

 

Crossover mode is automatically cancelled if no operation is performed within 15 seconds.

When you press DISP/B.OUT, you can switch the level Indicator display to the X-OVER adjustment display. For details, see “Changing the Audio Level Display Pattern” (page 7).

Recalling the Stored Crossover Settings (CDA-9815RB/CDA-9813R only)

1 Press and hold T.CORR/X-OVER for at least 2 seconds.

2 Press any one of the preset buttons (1 through

6)that has your desired crossover settings in memory.

3 Press T.CORR/X-OVER to return to normal mode.

Crossover mode is automatically cancelled if no operation is performed within 15 seconds.

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-9815RB/CDA-9813R/CDA-9812RX/CDA- 9811R 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

*1

*1

*1 Subwoofer speaker. CDA-9812RX/CDA-9811R only

You cannot change the Time Correction value for the subwoofer, but you can set the subwoofer's apparent position to the front by adjusting the Time Correction value of the front and rear speakers. For details, refer to the “ *1 ” on page 22.

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*2 1000 = 5.1 (ms)

*2 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-9815RB CDA-9813R CDA-9812RB CDA-9812RR CHA-1214 CHM-S630 CHA-S634Contents Installation and Connections Operating Instructions Never Attempt the Following On handling Compact Discs CD/CD-R/CD-RW Getting Started Detaching and Attaching the Front Panel Press DISP/B.OUT to switch the display patternRadio Manual Storing of Station PresetsAutomatic Memory of Station Presets Tuning to Preset StationsQuick Search Function Setting RDS Reception Mode and Receiving RDS StationsPress Search in Radio mode to switch to Title Search mode Station Title Search FunctionReceiving Traffic Information Recalling Preset RDS StationsPI Seek Setting Receiving RDS Regional Local StationsReceiving Traffic Information While Playing CD or Radio PTY Programme Type TuningWhen traffic information stations cannot be received Press T.INFO to deactivate the Traffic Information mode12-EN Press 2/P.PTY to activate the Priority PTY mode againPriority PTY Programme Type Displaying Radio Text13-EN Playback14-EN Press 5 in the play or pause modeRepeat Play X. Random PlayQuick Search File Search modeFolder Search mode Scanning Programmes16-EN Terminology17-EN Sound SettingSetting the Bass Control CDA-9812RX/CDA- 9811R only Press Rotary encoder repeatedly to choose the desired mode18-EN Setting the Treble Control CDA-9812RX/CDA- 9811R onlySetting the Bass Type CDA-9812RX/CDA- 9811R only Equalizer Presets CDA-9815RB/CDA-9813R only19-EN 20-EN WAY System21-EN About Time CorrectionExample 1. Listening Position Front Left Seat Example 2. Listening Position All Seats22-EN Example setting for steps 2Press T.CORR/X-OVER to select the Bass Focus mode Bass Focus23-EN Setting the MX ModePress BAND/TEL. to select a speaker to be adjusted Press Rotary encoder to return to normal mode24-EN About the indicator displayOther Functions Displaying the Title/Text25-EN Blackout Mode On and OffTitling Discs/Stations Erasing Disc Title/Station Title26-EN PersonalizeAbout i-Personalize Data Downloading27-EN Sound CustomizingVisual Customizing 28-EN External DeviceDAB Optional Using DAB Receiver for the Ensemble Seek Tuning OptionalChanging the Service Changing the Service ComponentMemorizing the Ensemble Automatically Memorizing the ServiceReceiving the Memorized Service Selected service is received31-EN Setting the Announcement Select ModeChanging the Display Mode Receiving Announcement Information of DAB Local Stations Setting for Automatic Change from DAB toSetting ON/OFF for DRC Dynamic Range Control Displaying the Regional LabelAbout MobileHub Link Telephone Mode ON/OFFMobileHub Link OperationOptional Incoming CallsCalling by the address book SMS Short Message Service OperationCalling by using the Speed Dial CallingMulti-Changer Selection Optional Changer OptionalControlling CD Changer Optional Playing MP3 Files with the CD Changer Optional36-EN Remote ControlRadio InformationCase of Difficulty Basic38-EN Indication for CD PlayerIndication for CD Changer Bottom side of player SpecificationsRemote Control CDA-9815RB/CDA-9813R/CDA-9812RX only 39-EN40-EN Installation and ConnectionsRemoval Installation41-EN 42-EN Connections for CDA-9812RX/CDA-9811RTo prevent noise/interference in the audio system 43-EN44-EN Connections for CDA-9815RB/CDA-9813R45-EN Antenna Receptacle # System Switch
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