Alpine IVA-D900 owner manual Optional, Adjustment Procedure for Dolby Surround, 44-EN

External Audio Processor

(Optional)

When an external audio processor is connected to this unit, you can operate it from this unit. Some audio processors may not be operated. When PXA-H510 or PXA-H900 is connected, some of the operations may not be performed from this unit. In this case, operate them in the connected product. Explanations below is the case when PXA-H700 is connected for example.

Refer also to the operating instructions of the connected audio processor.

•While your car is running, only A.PROC list is displayed. Carry out the operation related to any setting while your car stops.

•The adjustments or settings performed on the connected audio processor cannot be operated properly from this unit.

To display the Audio processor mode screen:

To watch a video source, your vehicle must be parked with the ignition key in the ACC or ON position. To do this, follow the procedure below.

1.Bring your vehicle to a complete stop at a safe location. Engage the parking brake.

2.Keep pushing the foot brake and release the parking brake once then engage it again.

3.When the parking brake is engaged for the second time, release the foot brake.

•For automatic transmission vehicles, place the transmission lever in the Park position.

Now, the locking system for the Audio processor mode operation has been released. Engaging the parking brake can reactivate the Audio processor mode, as long as the car's ignition has not been turned off. It is not necessary to repeat the above procedure (1 through 3), of “To display the Audio processor mode screen.”

Each time the ignition is turned OFF, perform the procedure of “To display the Audio processor mode screen.”

Adjustment Procedure for Dolby Surround

Make the adjustments described below in order to reproduce Dolby Digital and DTS sound with greater accuracy.

Adjustment procedure

1	Speaker setup (page 48)
	(Turning the speakers to be used on and off and
	setting their response)
	B
2	Adjusting the speaker levels (page 50)
	(Adjusting the signal output level to the various

speakers)

B

3	Mixing bass sound to the rear channel (page
	49)
	(Achieving smooth sound in the rear seat by mixing
	the front audio signals with the rear speaker signals)
	B
4	Adjusting the acoustic image (page 49)
	(Adjusting the acoustic image to achieve a sound as
	if the center speaker were directly in front of the
	listener)
	B
5	Achieving powerful high volume sound (page
	49)
	(Achieving energetic sound with even greater power,
	like the sound in a movie theater)
	B
6	Adjusting the DVD level (page 50)
	(Adjust the volume (signal level) in the Dolby Digital,
	Pro Logic II, DTS and PCM modes.)
	B
7	Storing settings in the memory (page 50)
	(Storing all the settings and adjustments made on the

IVA-D900 (not only the above settings/adjusts) in the memory)

In case of combining the Automatic adjustments etc.

We recommend to make the Automatic adjustments before the Dolby Surround adjustments.

44-EN