Alpine VPA-B222 Performing Time Correction Manually TCR, 34-EN, Check that Defeat mode is off

Page 36

8 Press the joystick up or down to select the desired item, then press the joystick left or right to adjust the crossover.

FREQUENCY: Adjust the H.P.F. or L.P.F. cutoff frequency. The adjustable bands differ according to the channel (speaker).

LEVEL: Adjust the H.P.F. or L.P.F. level. Adjustable level: -13 to 0

SLOPE: Adjust the H.P.F. or L.P.F. slope. Adjustable slope: OFF/-6/-12/-18/-24/-30

To adjust other channels, repeat steps 7 and 8.

9 Press MUTE/RTN/SETUP to return to the previous screen.

5.1ms 0.5m

2.25m

When the speaker is set to the “OFF” mode, the X-OVER for that speaker cannot be set. Refer to “Setting the Speakers” (page 33).

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.

Performing Time Correction Manually (TCR)

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

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.

1 Check that Defeat mode is off (page 10).

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

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

L = (distance of farthest speaker)

– (distance of other speakers)

4 Divide 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.

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.

5 Press and hold MUTE/RTN/SETUP for at least 2 seconds.

The SETUP screen is displayed.

6 Press the joystick up or down to select AP SETUP, then press the joystick right.

The AP SETUP screen is displayed.

7 Press the joystick up or down to select TCR.

8 Press the joystick left or right to select L/R or L+R.

L/R: Different adjustment values can be set for the left and right channels.

L+R: Sets the same adjustment values for the left and right channels.

9 Press the joystick up or down to select TCR SETUP, then press the joystick right.

10 Press the joystick up or down to select the desired speaker.

11 Press the joystick left or right to adjust the calculated time correction value (0.00 to 20.00ms). (1step=0.05ms)

Time correction value changes continuously by pressing and holding the joystick.

12 Press MUTE/RTN/SETUP to return to the previous screen.

When the speaker is set to the “OFF” mode, the TCR for that speaker cannot be set. Refer to “Setting the Speakers” (page 33).

The adjustment value for FRONT2 (Speakers) which is adjusted in time correction, is also applied to the front speakers in “Setting Bass Focus” (page 36).

The adjustment (AUTO TCR) cannot be automatically set on this unit.

34-EN

Image 36
Contents VPA-B222 CHA-S634 CHA-1214CHM-S630Contents Operating Instructions CD/MP3/WMA Operation Optional Installation Connections Operating Instructions Precautions Feature Accessory List Turning Power On or OffGetting Started Initial System Start-UpSwitching a Source Adjusting the VolumeLowering Volume Quickly RadioManual Storing of Station Presets Automatic Memory of Station PresetsTuning to Preset Stations Setting Analog Mode HD Radio mode onlyOther Useful Features Changing the Display HD Radio mode onlyAdjusting the Audio Press and hold MUTE/RTN/SETUP for at least 2 secondsAdjusting the Balance Adjusting the FaderSetting the Treble Control Setting the Bass ControlSwitching the function of the remote sensor System Setup screen is displayedRear Entertainment Function 11-ENSetup General Setup OperationSetting the Time Display Demonstration FunctionSystem Setup Operation Using the Speaker Input Connecting the Navigation Connecting an External Input Device AUXConnecting the Rear Monitor Connecting a SubwooferSetting the Commander Setting the OthersAdjusting the display position Setting the Auxiliary Data Field DisplayCD/MP3/WMA Operation Optional Playing CD/MP3/WMAFolder/File Search X. Random PlayRepeat Play 18-ENWhen Repeat is displayed Press / /ENTER Repeat mode is changedDVD/Video CD Operation Optional Playing DVD/Video CDPlaying Still Frames Pausing To display the DVD mode screenFinding the Beginnings of Chapters or Tracks Fast-forwarding/Fast-reversingChanging Discs only when DVD changer is connected Switching the Audio TracksDisplaying the Top Menu Screen DVD only Stopping Playback PRE StopSwitching the Angle DVD only Switching from the disc menu22-EN Monitor displayTuning in to Categorized Programs SAT Radio Receiver OptionalReceiving Channels with the SAT Receiver Changing the DisplayStoring Channel Presets Checking the SAT Radio ID NumberReceiving Stored Channels 24-ENIPod Optional Category/Channel Search FunctionStoring Weather or Traffic information from SAT Radio Receiving Weather or Traffic Information from SAT RadioSearching for a desired Song Searching by PlaylistSearching by artist name Searching by album nameSelect Playlist/Artist/Album Random Play Shuffle M.I.XSearching by Song Name 27-ENNavigation System Optional Displaying the Navigation ScreenMap Screen Function Menu Screen FunctionAutomatic Memory of Channel Presets Switching AudioTV Operation Optional Operating TV UnitAuxiliary Device Optional Operating Auxiliary Devices Optional30-EN External input screen is displayedOperating Factory System Speaker Input mode Factory SystemHDD Player Operation Optional Listening to Music of HDDAdjustment Procedure for Dolby Surround External Audio Processor Optional32-EN Setting the Speakers Set MX Mode of the External Audio ProcessorOver Adjustment AP Setup screen is displayedCheck that Defeat mode is off To adjust other channels, repeat steps 7Performing Time Correction Manually TCR 34-ENPhase Switching Graphic Equalizer AdjustmentsParametric Equalizer Adjustments Adjustable level -9 to +9Setting Bass Sound Control Speaker SetupSetting Bass Compressor Setting Bass FocusSetting of Dolby Digital Adjusting the acoustic imageAchieving powerful high volume sound Adjusting the speaker levelsAdjusting the DVD Level Storing Settings in the MemoryCalling up the Preset Memory Using the Pro Logic II ModeLinear PCM Setting Soft button operationBasic operation 39-ENSetup Operation Radio Operation40-EN CD/MP3/WMA Operation DVD/Video CD Operation41-EN SAT Radio Operation 42-ENIPod Operation 43-ENStored weather or traffic channel is recalled Enters the selected playlist/artist/album/songTV Operation HDD Player Operation 44-ENInformation Case of Difficulty45-EN Indication for SAT Receiver Mode Indication for iPod Mode46-EN Specifications Commander47-EN Installation and Connections 48-ENInstallation Installing the unitWhen mounting with Velcro fasteners 49-ENMounting the Commander 50-ENPattern Mount the HolderConnection Diagram of Spst Switch Sold Separately If the ACC power supply is not available51-EN Parking Brake Lead ConnectionConnections VPA-B222 Wiring Diagram 52-EN53-EN System Example 54-ENConnect the Alpine Monitor RCA Extension Cable IncludedGuide Control Lead White/Green Ai-NET Connector 55-ENRCA Extension Cable Included with DVD video player When Connecting External Equipment 56-ENTo Ai-NET Connector Black To Ai-NET Connector Gray 57-ENTo AV Selector Terminal 58-EN Connect the car system standard audio system, etc