Alpine Multimedia Manager PXA-H900 Owner's Manual download pdf (Page 24)

20-EN

Automatic Adjustments

Performing time correction

automatically

(Precision Automated Time

Correction)

Due to the particular conditions inside the vehicle, there is a

major difference between the distances of the various speakers

and the listening position. This function uses the included

measurement microphone to automatically measure and analyze

the distances between the speakers and the listening position and

perform the optimum time correction.

Before starting the automatic adjustment proce-

dure, park the vehicle in a quiet place to avoid the

effects of external sounds.

Set the vehicle’s key to the ACC position.

Do not start the engine. The vibrations may

make it impossible to achieve the proper adjust-

ment values.

• Preparations must be made

before performing the automatic

adjustment procedure. Refer to

page 14.

• The PXA-H900’s automatic

adjustments take into account the

delay time between the time at

which the signals are input to the

speakers until the sound is

output. This does not correspond

to the actual distance.

• With the automatic adjustments,

the average delay time within the

speakers’ playable frequency

range is measured. Measure-

ments may not be possible when

using special speakers or in

special playback environments.

If this is the case, perform the

adjustments manually.

VOL

AUTO TCR

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Alpine Multimedia Manager PXA-H900 Owner's Manual Page 24