Alpine PXA-H800 Adjusting the Time Correction TCR, Calculation of time correction, 28-EN

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From a PC

Displaying the data

1 Click [Show All Data].

The setup values for all the channels will be displayed.

Concrete examples

1Calculating 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: 0.5 m (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.

Adjusting the Time Correction (TCR)

0.5m

5.1ms

Because of the particular conditions inside the vehicle, there are major differences in the distances between the different speakers and the various listening positions. The proper time correction can be obtained using the automatic time correction function (“Auto TCR”), but it is also possible to calculate the optimum correction values and eliminate the time error at the listening position using this function.

2.25m

The unit for the time correction can be chosen to be either “cm” or “inch.” (Initial setting: “cm”)

e Calculation of time correction

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

2 Calculate the difference in distance between the farthest speaker and the other 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 5.1 ms makes it possible to coordinate the distance from the listening position to the speaker.

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

3 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 different speakers.

e Entering the time correction

4 Click [TCR] for [Shortcut] tab in the main menu.

The TCR Setup screen is displayed.

When you click [Mobile Sound Manager] on the Function switching tab, and then [TCR], the TCR Setup screen will also be displayed. Refer to “Operating the Function Switching Tab” (page 7).

5 Click [ON] for “TCR” in the main menu.

Choose OFF to disable the TCR function.

6 Click either [ ] or [ ].

: Both R and L channels are set at the same value (The initial setting).

: Channels R and L can be set independently.

When you select “ ,” a message to confirm which of the R or L channel set up values is to be applied will be displayed. Click either [LEFT] or [RIGHT].

28-EN

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Contents PXA-H800 Page From a PC From the Commander Information Operating Instructions How to Read this Manual From a PC From the Commander Function listLocation of Controls PXA-H800Sound Manager for PXA-H800 RUX-C800 Commander sold separately Before You First Use the Unit FeaturesAbout the Audio Setting About OperatingBefore installing, all active programs must be stopped Installing Sound Manager for PXA-H800About the Offline mode Start Sound Manager for PXA-H800Initial System Start-Up Using with Ai-NET ConnectionsTurning Power On and Off Operating the Sound Manager for PXA- H800 MenuDownloading the Software Option Audio AdjustmentLoading the ImprintEQ Measurement Data File Viewing the Version Information OptionSetting Defeat Switching the SourcesStoring the Preset Values Preset Store Recalling a Stored Setting Preset Call Setting the Speaker System Output System Select13-EN Setting the Speakers Speaker Setup/ Setting the Subwoofers Setting the AUX Input System AUX Input System Select14-EN Setting the AUX Volume Input level AUX in Gain Setting the AUX Input AUXSetting the Digital Input Digital AUX Adjusting the AUX Volume level AUX LevelBefore Performing Automatic Measurement Naming the AUX Input AUX Name16-EN Setting ImprintEQ 17-EN18-EN Saving ImprintEQ Measurement Data on a Adjusting and Saving the Target CurveTurning ImprintEQ On/Off 19-EN20-EN Adjusting the Time Correction Automatically Auto TCRAdjusting for Road Noise RoadEQ Click Auto TCR for Shortcut tab in the main menu21-EN When you click ON, select the levelTurning RoadEQ On/Off Click on or OFF for RoadEQSetting MX Plus Ai-NET Mode Setting MX Plus Standalone Mode22-EN Setting the Graphic EQ 23-EN24-EN Click a frequency and drag up or down to adjust the levelTo adjust another channel, repeat Steps 4 through Displaying the data Click Show All DataClick P.EQ for Shortcut tab in the main menu Setting the Parametric EQ25-EN Click P.EQ in the main menu26-EN Adjusting X-Over and Switching the PhasesAbout the Crossover X-Over Crossover X-OverClick the indicator of Show 27-ENArrow indicating the dragging direction appears Entering the time correction Adjusting the Time Correction TCRCalculation of time correction 28-EN29-EN Setting contents 0.00 to 20.00 ms in 0.05 ms stepsSetting contents Inch Click either cm or inchSet and adjust 2ch Playback Mode, EUPHONY, Dolby Pro Logic Setting Euphony EuphonyClick Multi Channel Manager of the Function switching tab 30-ENUsing Dolby Pro Logic II Dolby Pro Logic 31-ENMulti Channel Function Adjustment Procedure Multi Channel Setup32-EN Mixing the Low Range Audio for the Rear Rear Mix Adjusting the Speaker Volume Level Output LevelAdjusting the Acoustic Image BI 33-ENAdjusting the DVD Level DVD Level Setting the Linear PCM PCM ModeAchieving Powerful High Volume Sound Listening Mode 34-ENAdjusting Subwoofer Subwoofer Navigation Audio Volume Adjustment35-EN Adjusting Fader Between Front and Rear Fader Adjusting the MX Plus Level MX Plus SETUP/LEVEL AdjustmentAdjusting Balance Between Left and Right Balance Setting Defeat DefeatSetting the Speaker System System Select 37-EN38-EN Setting the Speakers Speaker SetupSetting the Subwoofer Output SW Channel OFF/ONSetting the AUX Input System AUX Input Setup Setting the AUX Input AUX39-EN Adjusting the AUX Volume Level AUX Level Setting the Digital Input Digital AUXSetting the AUX Volume Input Level AUX in Gain 40-ENWhen the setting is complete, press Mixing Navi Audio Guidance Navi Mix SetupRotate the Rotary encoder to make adjustment Naming the AUX Input AUX NameBe sure to read before performing the automatic measurement Turning ImprintEQ On/Off42-EN Press and hold FUNC. for at least 2 secondsWhen Finished appears, press Rotary encoder 43-ENPress the Rotary encoder Setting the MX Plus Ai-NET Mode 44-EN45-EN Setting the MX Plus Standalone ModeTo adjust another source, press and repeat Steps 8 through Press twice to go back to the screen for StepSetting the Equalizer Mode EQ Mode 46-ENG-EQ screen is displayed Select the channel you want to adjust by pressing Channel 47-ENHz to 20kHz in 1/6 octave steps 48-ENBand FRONT/REAR/CENTER 1 to Hz to 200 Hz in 1/6 octave steps49-EN Front LOW Rear Center SUBWOOFER*1 Front HighFront L MID Front R MID 50-EN TCR screen is displayedSetting the Time Correction Adjustment Unit TCR Parameter To adjust another channel, repeat Steps 9 through51-EN Setting the 2-Channel Signal Playback Mode Mode Setting Euphony Euphony52-EN Using Dolby Pro Logic II Dolby Plii 53-ENDolby Plii screen is displayed Adjusting the Speaker Volume Level Output Level 54-ENSelect the channel by pressing Channel Adjusting the Acoustic Image BI Mixing the Low Range Audio for the Rear Rear Mix55-EN Adjust the frequency by rotating the Rotary encoder Setting the Linear PCM PCM ModeAchieving Powerful High Volume Sound Listening Mode 56-ENTurning the Back Light Off Black OUT function Adjusting the DVD Level DVD LevelLowering Volume Quickly Mute 57-ENAdjusting the Brightness Level of the Display Dimmer Level Adjusting the Brightness of the Display Dimmer58-EN 59-EN Switching the DisplayDisplay mode switches for every push Press ViewOutput System System Configuration60-EN Input SystemTerminology 61-ENIndication Commander RUX-C800 Case of Difficulty62-EN Specifications 63-ENDimensions 64-ENComponents