Alpine INE-W940 Manual Do Proprietário
38
-EN
You can set the rear speaker output to “Off.”
Setting item: Rear Speaker
Setting contents: On (Initial setting) / Off
Setting contents: On (Initial setting) / Off
• Note that if you select “Off” when the Rear Speaker Position in Car
Specific Sound Setup is set to “Rear Deck” or “Rear Door/Panel,”
the setting in Car Specific Sound Setup will be canceled.
the setting in Car Specific Sound Setup will be canceled.
If an optional subwoofer is connected to the unit, make the following
setting.
setting.
Setting item: Subwoofer
Setting contents: On / Off (Initial setting)
Setting contents: On / Off (Initial setting)
• Note that if you select “Off” when Subwoofer Installed in Car
Specific Sound Setup is set to “Yes,” the setting in Car Specific Sound
Setup will be canceled.
Setup will be canceled.
Setting Defeat
[Defeat] is selected on the Sound setup menu in step 3. Refer to “Sound
Setup Operation” (page 34).
If Defeat is “On,” MX, Factory’s EQ and Parametric EQ functions are
turned OFF. This disables any settings made for these functions.
Setup Operation” (page 34).
If Defeat is “On,” MX, Factory’s EQ and Parametric EQ functions are
turned OFF. This disables any settings made for these functions.
Setting item: Defeat
Setting content: Off (Initial setting) / On
Setting content: Off (Initial setting) / On
About Time Correction
The distance between the listener and the speakers in a car vary widely
due to the complex speaker placement. This difference in the distances
from the speakers to the listener creates a shift in the sounds image and
frequency characteristics. This is caused by the time delay between the
sound reaching the listener’s right versus the left ear.
To correct this, this unit is able to delay the audio signal to the speakers
closest to the listener. This effectively creates a perception of increased
distance for those speakers. The listener can be placed at an equal
distance between the left and right speakers for optimum staging.
The adjustment will be made for each speaker in 3.4cm steps.
due to the complex speaker placement. This difference in the distances
from the speakers to the listener creates a shift in the sounds image and
frequency characteristics. This is caused by the time delay between the
sound reaching the listener’s right versus the left ear.
To correct this, this unit is able to delay the audio signal to the speakers
closest to the listener. This effectively creates a perception of increased
distance for those speakers. The listener can be placed at an equal
distance between the left and right speakers for optimum staging.
The adjustment will be made for each speaker in 3.4cm steps.
Adjust the time correction level of the front left speaker to a high value
and the rear right to zero or a low value.
and the rear right to zero or a low value.
The sound is not balanced because the distance between the
listening position and the various speakers is different.
The difference in distance between the front left speaker and the rear
right speaker is 1.75 m (68-7/8").
Here we calculate the time correction value for the front left speaker
in the diagram on the above.
listening position and the various speakers is different.
The difference in distance between the front left speaker and the rear
right speaker is 1.75 m (68-7/8").
Here we calculate the time correction value for the front left speaker
in the diagram on the above.
Conditions:
Farthest Speaker – listening position : 2.25 m (88-9/16")
Front left speaker – listening position : 0.5 m (19-11/16")
Calculation: L = 2.25 m – 0.5 m = 1.75 m (68-7/8")
Time correction = 1.75 ÷ 343*
Farthest Speaker – listening position : 2.25 m (88-9/16")
Front left speaker – listening position : 0.5 m (19-11/16")
Calculation: L = 2.25 m – 0.5 m = 1.75 m (68-7/8")
Time correction = 1.75 ÷ 343*
1
× 1000 = 5.1 (ms)
*
1
Speed of sound: 343 m/s (765 mph) at 20°C
In other words, giving the front left speaker a time correction value of
5.1 ms makes it seem as if its distance from the listener is the same
as the distance to the farthest speaker.
5.1 ms makes it seem as if its distance from the listener is the same
as the distance to the farthest speaker.
Time correction eliminates the differences in the time required for the
sound to reach the listening position.
The time of the front left speaker is corrected by 5.1 ms so that its
sound reaches the listening position at the same time as the sound of
other speakers.
sound to reach the listening position.
The time of the front left speaker is corrected by 5.1 ms so that its
sound reaches the listening position at the same time as the sound of
other speakers.
Adjust the time correction level of each speaker to almost the same level.
1
Sit in the listening position (driver’s seat, etc.) and
measure the distance (in meters) between your head
and the various speakers.
measure the distance (in meters) between your head
and the various speakers.
2
Calculate the difference between the distance
correction value to the farthest speaker and the
other speakers.
correction value to the farthest speaker and the
other speakers.
L = (distance to farthest speaker) – (distance to other
speakers)
Rear Speaker Setting
Turning Subwoofer ON/OFF
Example 1. Listening Position: Front Left Seat
Example 2. Listening Position: All Seats
5.1ms
2.25m
0.5m