Bedienungsanleitung Alpine RUX-C800 (Seite 52 von 67) (Englisch)

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01GB07PXAH800.fm

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

From the Commander

To adjust another channel, repeat Steps 5 through

11.

• You can mute the channel you are adjusting.

1 Press [MUTE] while in the adjustment mode to mute the

channel.

2 To cancel muting, press [MUTE] again.

When the setting is complete, press and hold [ ]

for at least 2 seconds.

• If [ ] is pressed during setting, the unit returns to the previous

item.

• When Tweeter is selected for FRONT HIGH to protect the speaker,

there is no filter off (Slope OFF) setting for HPF. There is no filter off

(Slope OFF) setting for Subwoofer LPF, either.

• When the speaker is in Off mode, X-Over does not affect the speaker.

Refer to “Setting the Speaker System (System Select)” (page 37)/

“Setting the Speakers (Speaker Setup)” (page 38).

• Check the playback frequencies of the connected speakers before

adjusting.

• After the setting, it is recommended to store the setting contents on

the unit. For details, refer to “Storing the Preset Values (Preset

Store)” (page 36).

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

listening position. 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 yourself using this function.

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

Press [FUNC.].

Rotate the [Rotary encoder] to select “Sound Field

Adj.,” and then press the [Rotary encoder].

Rotate the [Rotary encoder] to select “TCR”, and

then press the [Rotary encoder].

The TCR screen is displayed.

Select [ON] for “TCR” by rotating the [Rotary

encoder], and press the [Rotary encoder].

• When “OFF” is selected, the TCR function becomes disabled.

Press and hold [CHANNEL] for at least 2 seconds.

Rotate the [Rotary encoder] to select either “L+R” or

“L or R,” and press the [Rotary encoder].

L or R: Channels R and L can be set independently.

L+R: Both R and L channels are set at the same value

(The initial setting).

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 50 Tuesday, February 8, 2011 9:04 PM

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