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43-EN
01GB06IVAW205R.fm
ALPINE IVA-W205R 68-08564Z42-A (EN)
X-OVER Adjustment
1
Check that Defeat mode is off.
2
Touch [SETUP] on the main source screen.
The SETUP selection screen appears.
3
Touch [AUDIO].
The AUDIO SETUP screen will appear.
4
Touch [] of A.PROC.
The A.PROCESSOR list screen appears.
5
Touch [] or [] of X-OVER to select L/R or L+R.
6
Touch [] of X-OVER.
A speaker list on the X-OVER screen is displayed.
7
Touch [] of the speaker to be adjusted.
The screen changes to the X-OVER screen to be adjusted.
8
Adjust the crossover to your preference.
Selecting the Cut-Off Frequency
Touch [] or [] of FREQ. then select the cut-off frequency
(crossover point).
The adjustable bandwidth differs depending on the speaker
(channel).
Adjusting the Level
Touch [] or [] of LEVEL, then adjust the HPF or LPF level.
Adjusting the Slope
Touch [] or [] of SLOPE, then adjust the HPF or LPF
slope.
9
Touch [RETURN] to return to the previous screen.
When the speaker is set to the “OFF” mode, the X-OVER for that
speaker cannot be set. Refer to “Setting the Speakers” (page 42).
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 HPF cannot be set SLOPE to OFF if Tweeter (TW) is selected
for FRONT1. Or, only the subwoofer is adjustable if STEREO is
selected for the subwoofer.
Performing Time Correction Manually
(TCR)
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.
1
Check that Defeat mode is off.
2
Sit in the listening position (the driver’s seat, for
example) and measure the distance (in meters)
between your head and the various speakers.
3
Calculate the difference in distance between the
farthest speaker and the other speakers.
4
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.
L/R: Different adjustment values can be set for the left and
right channels.
L+R: Sets the same adjustment values for the left and right
channels.
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)
68-08564Z42-A_F.book Page 43 Wednesday, January 24, 2007 2:26 PM
44


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