8 Adjust L.P.F. by performing steps 6 and 7.
9 Adjust the level (LEVEL) by turning the Rotary encoder, then press MODE.
Press the MODE to return to step 6.
10 To adjust other channels, repeat steps 5 to 9.
11 When the setting is complete, press and hold MUTE for at least 2 seconds.
The unit returns to the normal mode.
When the speaker is set to the “OFF” mode, the X-OVER for that speaker cannot be set. Refer to “Setting the Speakers” (page 36).
Check the playback frequencies of the connected speakers before adjusting.
In order to protect the speakers, there is no OFF setting for the subwoofer low pass filter (the slope remains the same).
The H.P.F. filter cannot be set to OFF (slope OFF) if Tweeter is selected for FRONT1. Or, if subwoofer is set to STEREO, CENTER adjustment is affected by the subwoofer setting.
When the setting is complete, it is recommended to store the setting contents. For storing, refer to page 43.
Adjust the slope of H.P.F. (HP SLOPE) by turning the Rotary encoder, and press MODE.
7
Adjust the cut-off frequency of H.P.F. (HP FREQ) by turning the Rotary encoder, then press MODE. The adjustable frequency range differs depending on the channels (speakers).
6
The speakers display differs, depending on the connected speakers.

X-OVER Adjustment

1Check that Defeat mode is off (page 21).

2Press and hold MUTE for at least 2 seconds.

The audio processor control mode is activated.

3Select the X-OVER mode by pressing MUTE repeatedly.

4Select L+R or L/R by pressing and holding BAND for at least 2 seconds.

L+R: Sets the same adjustment values for the left and right channels.

L/R: Different adjustment values can be set for the left and right channels.

5Select the desired channel by pressing or , then press MODE.

When L+R is selected :

FRONT 1 FRONT 2 REAR CENTER SUBWOOFER FRONT 1

When L/R is selected :

FRONT 1L FRONT 1R FRONT 2L FRONT 2R

REAR L REAR R CENTER SUBWOOFER FRONT 1L

Performing Time Correction Manually (TCR)/ Phase Switching

Because of the particular conditions inside the vehicle, there can be major differences in the distances between the various speakers and the listening position. It is possible to calculate the optimum correction values and eliminate the time error at the listening position yourself using this function.

Calculating the Time Correction

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

2Calculate the difference in distance between the farthest speaker and the other speakers.

L = (distance of farthest speaker)

(distance of other speakers)

3Divide 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 various speakers.

Concrete examples

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:

0.5m (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)

37-EN

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Alpine DVA-9861 owner manual Over Adjustment, Calculating the Time Correction, 37-EN