Alpine DVA-9861Ri Bedienungsanleitung PDF herunterladen (Seite 39)

38-EN

01GB05DVA9861Ri.fm

ALPINE DVA-9861Ri 68-04123Z62-A (EN)

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).

Adjust the slope of H.P.F. (HP SLOPE) by turning the

Rotary encoder, then press MODE.

Adjust L.P.F. by performing steps 6 and 7.

Adjust the level (LEVEL) by turning the Rotary

encoder, then press MODE.

Press the MODE to return to step 6.

To adjust other channels, repeat steps 5 to 9.

When the setting is complete, press and hold TA 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 37).

• 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 44.

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.

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.

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 various

speakers.

Concrete examples

Calculating the time correction value for the front left speaker on

the diagram below.

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.

Check that Defeat mode is off (page 25).

Press and hold TA for at least 2 seconds.

The audio processor control mode is activated.

Select the TCR/PHASE mode by pressing TA

repeatedly.

Select L+R or L/R by pressing and holding BAND for

at least 2 seconds.

Calculating the Time Correction

L = (distance of farthest speaker)

– (distance of other speakers)

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)

Inputting the Time Correction

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.

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.

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