Bedienungsanleitung Alpine RUX-C800 (Seite 30 von 67) (Englisch)

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01GB06PXAH800.fm

ALPINE PXA-H800_EN 68-13530Z65-A (B5)

From a PC

Displaying the data

Click [Show All Data].

The setup values for all the channels will be displayed.

Adjusting the Time Correction (TCR)

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.

The unit for the time correction can be chosen to be either “cm” or

“inch.” (Initial setting: “cm”)

e Calculation of time correction

Sit in the listening position (the driver’s seat, for

example) and measure the distance (in meters)

between your head and the various speakers.

Calculate the difference in distance between the

farthest speaker and the other speakers.

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

speakers)

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.

Concrete examples

1 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: 0.5 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.

e Entering the time correction

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).

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

• Choose OFF to disable the TCR function.

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].

2.25m

0.5m

5.1ms

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.

01GB00PXAH800.book Page 28 Tuesday, February 8, 2011 9:04 PM

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