Bass focus, Example setting for steps 2 and 3 – Alpine CDA-9815RB User Manual
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(2) Press BAND/TEL. to select the left (front and rear)
speakers. Then turn the Rotary encoder to select
1.5 ms (Delay no. 15 in the table). The time
difference is 3.0 ms*
2
for the front left speaker, and
1.5ms for the left rear speaker, creating the
impression of an equal listening between the front
left speaker and the other speakers.
*
1
Subwoofer speaker.
CDA-9812RX/CDA-9811R only
Delay (turn the rotary encoder) the audio signal to the front (left
and right) speakers to make the apparent position of the subwoofer
to be at the front. In doing this, the apparent position between the
front (left and right) speakers and subwoofer will appear equal to
the driver. After performing the above, you can change the
positions of the left and right speakers by delaying the time .
*
2
Because the time difference was already set to 1.5ms for the front
left speaker to begin with, the additional correction of 1.5ms makes
the total time difference of the front left speaker 3.0ms.
Bass Focus
The time difference between the front-rear/left-right speakers, can be
adjusted at the same time. With an initial delay of 0.1 ms for each of
the 0 to 99 steps, audible time correction can be done.
1
Press T.CORR/X-OVER to select the Bass Focus
mode.
Bass Focus mode
→ Time correction mode → normal mode
→ Bass Focus mode
2
Press BAND/TEL. to select the speakers to be
adjusted (see below).
3
Turn the Rotary encoder to adjust the delay (see
Time Difference Table).
4
To set another channel (speakers), repeat steps 2
and 3.
5
After setting, press and hold T.CORR/X-OVER for
at least 2 seconds to return to normal mode.
• Any manual time correction adjustments will also affect
corrections made in Bass Focus.
• Bass Focus mode is automatically cancelled if no operation is
performed within 15 seconds.
Example setting for steps 2 and 3
(1) Press BAND/TEL. to select the front (left and
right) speakers. Then turn the Rotary encoder to
select 1.5 ms (Delay no. 15 in the table). The time
difference is 1.5 ms for both front (left and right
speakers.
Time Difference Table
0
0.0
14
1.4
28
2.8
1
0.1
15
1.5
29
2.9
2
0.2
16
1.6
30
3.0
3
0.3
17
1.7
31
3.1
4
0.4
18
1.8
32
3.2
5
0.5
19
1.9
33
3.3
6
0.6
20
2.0
34
3.4
7
0.7
21
2.1
35
3.5
8
0.8
22
2.2
36
3.6
9
0.9
23
2.3
37
3.7
10
1.0
24
2.4
38
3.8
11
1.1
25
2.5
39
3.9
12
1.2
26
2.6
40 - 98
4.0 - 9.8
13
1.3
27
2.7
99
9.9
Delay
Number
Time
Difference
(ms)
Delay
Number
Time
Difference
(ms)
Delay
Number
Time
Difference
(ms)
→
←
←
→
Front (left-right)
speakers
Left (front-rear)
speakers
Rear (left-right)
speakers
Right (front-rear)
speakers
FL
FR
RL
RR
FL
FR
RL
RR
FL
FR
RL
RR
FL
FR
RL
RR
1.5ms
1.5ms
3.0ms
1.5ms
1.5ms
*
1
1.5ms
1.5ms
*
1