Alpine cda-9833r Manual Do Utilizador
20
-EN
5
Press SOURCE/POWER to select the desired
slope.
slope.
Adjustable slope: 0 (FLAT (OFF))*, 1 (6 dB/oct.),
2 (12 dB/oct.), 3 (18 dB/oct.),
4 (24 dB/oct.)
4 (24 dB/oct.)
* FLAT can be set for the HIGH slope only when USER'S
is selected in “Setting the Response Slope for the High
Range Speaker (TW SETUP)” (page 29). Depending on
the response characteristics of the speaker, care should
be taken when setting the response slope to FLAT, as
speaker damage may result. A message is displayed
when the response slope for the high range speaker is
set to FLAT.
Range Speaker (TW SETUP)” (page 29). Depending on
the response characteristics of the speaker, care should
be taken when setting the response slope to FLAT, as
speaker damage may result. A message is displayed
when the response slope for the high range speaker is
set to FLAT.
6
Turn the Rotary encoder to select the desired
output level.
output level.
Adjustable output level: -12 to 0 dB.
To store the adjusted contents
1) Press and hold, for at least 2 seconds, any one of the
preset buttons (1 through 6) into which you wish to store
the adjusted contents.
the adjusted contents.
7
For setting another channel, repeat the steps 3 to 6.
8
Press the Rotary encoder to confirm the
adjusted contents.
adjusted contents.
The adjusted contents are not stored if the Rotary encoder
is not pressed.
is not pressed.
9
After setting, press and hold MENU for at least 2
seconds to return to normal mode, or press MENU
and select RETURN to return to normal mode.
seconds to return to normal mode, or press MENU
and select RETURN to return to normal mode.
• About the 2way/3way system
You can switch to 2way/3way system mode with the 2way/3way
switch on the bottom side of the unit (pages 40 to 42).
switch on the bottom side of the unit (pages 40 to 42).
When setting to “3 WAY”:
The unit can be operated in a 3 way system.
When setting to “F/R/Sub-W”:
The unit can be operated in a 2 way system.
• Crossover mode is automatically cancelled if no operation is
performed within 15 seconds.
Recalling the Stored Crossover Settings
1
Press and hold MENU for at least 2 seconds.
2
Press MENU to select X-OVER.
3
Press any one of the preset buttons (1 through
6) that has your desired crossover settings in
memory.
6) that has your desired crossover settings in
memory.
4
Press and hold MENU for at least 2 seconds to
return to normal mode, or press MENU and select
RETURN to return to normal mode.
return to normal mode, or press MENU and select
RETURN to return to normal mode.
• Crossover mode is automatically cancelled if no operation is
performed within 15 seconds.
F/R Sub-W
3WAY
2.25m
0.5m
5.1ms
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, the CDA-9835R/CDA-9833R 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 0.1 ms steps.
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, the CDA-9835R/CDA-9833R 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 0.1 ms steps.
Example 1. Listening Position: Front Left Seat
Adjust the time correction level of the front left speaker
to a high value and the rear right to zero or a low value.
to a high 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").
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.
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.
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.
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.
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.