Alpine DVA-9965 owner manual Performing Time Correction Manually TCR/ Phase Switching, 47-EN

Page 49

9To adjust other channels, repeat steps 5 to 8.

10 When the setting is complete, press and hold MENU for at least 2 seconds.

•When the speaker is set to the “OFF” mode, the X-OVER for that speaker cannot be set. Refer to “Setting the Speakers” (page 46).

•Check the playback frequencies of the connected speakers before adjusting.

•In order to protect the speakers, there is no OFF setting for the subwoofer low pass filter (the slope remains the same).

•The H.P.F. filter cannot be set to OFF (slope OFF) if Tweeter is selected for FRONT1. Or, only the subwoofer is adjustable if STEREO is selected for the subwoofer.

•When the setting is complete, it is recommended to store the setting contents. For storing, refer to page 53.

Concrete examples

Calculating the time correction value for the front left speaker on the diagram below.

Conditions:

Distance between farthest speaker and listening position: 2.25 m (88-3/4")

Distance between front left speaker and listening position:

0.5m (20")

Calculation:

L = 2.25 m (88-3/4") – 0.5 m (20")= 1.75 m (68-3/4") Compensation time = 1.75 ÷ 343 x 1000 = 5.1 (ms)

In other words, setting the time correction value for the front left speaker to 5.1 (ms) sets a virtual distance matching the distance to the farthest speaker.

Performing Time Correction Manually (TCR)/ Phase Switching

Because of the particular conditions inside the vehicle, there can be major differences in the distances between the various speakers and the listening position. It is possible to calculate the optimum correction values and eliminate the time error at the listening position yourself using this function.

Calculating the Time Correction

5.1ms

0.5m

2.25m

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

2Calculate the difference in distance between the farthest speaker and the other speakers.

L = (distance of farthest speaker)

–(distance of other speakers)

3Divide the distances calculated for the different speakers by the speed of sound (343 m/s temperature 20°C).

This value is the time correction value for the various speakers.

The sound is uneven because the distance between the listening position and the different speakers is different. The difference in the distance between the front left and rear right speakers is 1.75 meters (68-3/4").

Time correction eliminates the difference between the time required for the sound from the different speakers to reach the listening position.

Setting the time correction of the front left speaker to

5.1ms makes it possible to coordinate the distance from the listening position to the speaker.

47-EN

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Contents DVA-9965 CHA-1214 CHM-S630 CHA-S634Contents Installation and Connections USE only in Cars with a 12 Volt Negative Ground Operating InstructionsNever Attempt the Following Discs playable on this unit 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 Initial System Start-Up Turning Power On and OffDisplay Tilt Adjustment Adjusting VolumeLowering Volume Quickly Opening and Closing the Movable DisplayAutomatic Memory of Station Presets Manual Storing of Station PresetsTuning to Preset Stations RadioPlayback Frequency Search Function11-EN Press g or f to select the desired track filePress the GlideTouch bar under RPT to select the RPT mode Press FUNC. to activate the audio function modeRepeat Play 12-ENScanning Programs X. Random PlaySearching from CD Text File/Folder Name Search concerning MP3/ WMAFile Name Search mode Folder Name Search modeAbout MP3/WMA 14-EN15-EN TerminologyPlaying DVD/Video CD DVD/Video CDIf a menu screen appears 16-ENStopping Playback PRE-STOP Playing Still Frames pausingStopping Playback Fast-forwarding/Fast-reversingSwitching the Angle DVD only Switching the Audio TracksChapter/Track/Title Repeat Playback Video CDs with multiplex audioDisplaying the Disc Status DVD only Switching the Subtitles subtitle language DVD onlyDisplaying the Disc Status Video CD only 19-ENGlideTouch bar Operation Sound Setting20-EN FuncSetting Users EQ mode Selecting the EQ mode Factory settingsAdjusting and Storing the Parametric Equalizer Curve 21-ENRecalling the Stored Equalizer Curve Adjusting and Storing the Graphic Equalizer Curve22-EN Press and hold Menu for at least 2 secondsAbout the Crossover Way mode23-EN CrossoverPress SOURCE/POWER to adjust the slope Adjusting and Storing the Crossover SettingsAdjust the output level by turning the Rotary encoder WAY SystemAbout Time Correction Recalling the Stored Crossover SettingsExample 1. Listening Position Front Left Seat Example 2. Listening Position All SeatsAdjusting and Storing the Time Correction Setting the Time Correction UnitPress Band to select a speaker to be adjusted Display Setup menu is displayedSetting the MX Mode Recalling the Stored Time Correction Settings27-EN Displaying the Text Other Functions28-EN Press TitleSetting the Multicolor Illumination Blackout Mode On and OffDisplaying Time Rear DVD FunctionAbout i-Personalize Data Download Personalize Data Download Operation30-EN File name of download data shall be AU∗∗∗∗∗.MP3Downloading the Wallpaper Data Downloading31-EN Insert a CD-R/CD-RW disc containing dataDVD Setup Operation DVD SetupSetting the language Press Setup before inserting a disc, or when in stop modeSetting the Country Code Setting the TV ScreenSetting the Rating Level Parental Lock Press Return repeatedly until the Setup mode is deactivatedSetting contents Bitstream / Lpcm Setting the Digital Output34-EN Audio output/Optical digital audio outputCustom Setup Operation Custom Setup35-EN ENTGeneral Setting Setup Operation36-EN Display Setting Audio Setting37-EN 38-EN Demo SettingSAT Radio Receiver Optional Storing Channel PresetsReceiving Channels with the SAT Radio Receiver Optional Checking the SAT Radio ID NumberReceiving Stored Channels Setting the Auxiliary Data Field DisplayChanging the Display Channel/Category Search FunctionSearching by Playlist Searching for a desired SongSearching by artist name 41-ENRandom Play Shuffle M.I.X Quick SearchSearching by album name 42-EN43-EN RPT mode is canceled by selecting offSong will be played back repeatedly Each press changes the displayControlling CD Changer Optional Changer OptionalPlaying MP3 Files with the CD Changer Optional Multi-Changer Selection Optional45-EN Adjustment Procedure for Dolby SurroundSet MX Mode of the External Audio Processor Setting the SpeakersOver Adjustment 46-ENCalculating the Time Correction Performing Time Correction Manually TCR/ Phase Switching47-EN = distance of farthest speaker Distance of other speakersSwitching the Phase Graphic Equalizer AdjustmentsInputting the Time Correction 48-ENSetting Bass Compressor Parametric Equalizer AdjustmentsSpeaker Setup 49-ENAdjusting the speaker levels Output Level Setting of Dolby DigitalMixing bass sound to the rear channel Rear MIX 50-ENAdjusting the acoustic image BI-PHANTOM Adjusting the DVD Level51-EN BI-PHANTOM ON/OFF52-EN Using the Pro Logic II ModeSelecting the Center Width Getting out the Preset Memory Storing Settings in the Memory53-EN Controls on Remote Control Remote Control54-EN Battery Replacement When Using the Remote Control55-EN About DVDs Information56-EN Dolby Digital TerminologyDolby Pro Logic Linear PCM audio Lpcm58-EN List of Language CodesFor details, see 59-EN List of Country Codes60-EN Basic Case of DifficultyRadio CD/MP3/WMA/DVD/Video CDIndication for DVD/Video CD Player Indication for CD Player62-EN Picture is unclear or noisyIndication for CD Changer Indication for SAT Receiver Mode63-EN Sirius toIndication for iPod Mode Specifications64-EN 65-EN Installation and Connections66-EN Accessory ListSlide the mounting sleeve into the dashboard RemovalWhen mounting with Velcro fasteners Installing the Power Supply Unit67-EN 68-EN Connections69-EN Antenna Receptacle Power Antenna Lead Blue70-EN System ExampleConnect the External Monitor To prevent noise/interference in the audio system 71-ENLimited Warranty Page Page Page
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