Alpine CDA-117 Owner's Manual (english) - Page 43

About the Crossover

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Delay Number 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 Time Difference (ms) 5.4 5.5 5.6 5.7 5.8 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 Distance (cm) 183.6 187.0 190.4 193.8 197.2 200.6 204.0 207.4 210.8 214.2 217.6 221.0 224.4 227.8 231.2 234.6 238.0 241.4 244.8 248.2 251.6 255.0 258.4 261.8 265.2 268.6 272.0 275.4 278.8 282.2 285.6 289.0 292.4 295.8 299.2 302.6 306.0 309.4 312.8 316.2 319.6 323.0 326.4 329.8 333.2 336.6 Distance (inch) 72.4 73.7 75.0 76.4 77.7 79.1 80.4 81.7 83.1 84.4 85.8 87.1 88.4 89.8 91.1 92.5 93.8 95.1 96.5 97.8 99.2 100.5 101.8 103.2 104.5 105.9 107.2 108.5 109.9 111.2 112.6 113.9 115.2 116.6 117.9 119.3 120.6 121.9 123.3 124.6 126.0 127.3 128.6 130.0 131.3 132.7 About the Crossover Crossover (X-OVER): This unit is equipped with an active crossover. The crossover limits the frequencies delivered to the outputs. Each channel is controlled independently. Thus, each speaker pair can be driven by the frequencies for which they have been optimally designed. The crossover adjusts the HPF (high pass filter) or LPF (low pass filter) of each band, and also the slope (how fast the filter rolls off the highs or lows). Adjustments should be made according to the reproduction characteristics of the speakers. Depending on the speakers, a passive network may not be necessary. If you are unsure about this point, consult your authorized Alpine dealer. 4.2ch (FRONT/REAR/SUBW.) mode Cut-off frequency (1/3 octave steps) HPF LPF Low range ---- speaker 20 Hz 200 Hz Rear high 20 Hz - range 200 Hz ---- speaker Front high 20 Hz - range 200 Hz ---- speaker Slope HPF ---- FLAT, 6, 12, 18, 24 dB/ oct. FLAT, 6, 12, 18, 24 dB/ oct. LPF FLAT, 6, 12, 18, 24 dB/ oct. ---- ---- Level 0 to −12 dB 0 to −12 dB 0 to −12 dB Low range High range (Different from actual display) 2.2ch (3WAY) mode Cut-off frequency (1/3 octave steps) HPF LPF Low range ---- speaker 20 Hz 200 Hz Mid range speaker 20 Hz 200 Hz 20 Hz 20 kHz 1 kHz - High range 20 kHz, ---- (20 Hz ~ speaker 20 kHz)* Slope HPF ---- FLAT, 6, 12, 18, 24 dB/ oct. FLAT* 6, 12, 18, 24 dB/ oct. LPF FLAT, 6, 12, 18, 24 dB/ oct. FLAT, 6, 12, 18, 24 dB/ oct. ---- Level 0 to −12 dB 0 to −12 dB 0 to −12 dB 41-EN

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41
-EN
About the Crossover
Crossover (X-OVER):
This unit is equipped with an active crossover. The crossover limits the
frequencies delivered to the outputs. Each channel is controlled
independently. Thus, each speaker pair can be driven by the
frequencies for which they have been optimally designed.
The crossover adjusts the HPF (high pass filter) or LPF (low pass filter) of
each band, and also the slope (how fast the filter rolls off the highs or
lows).
Adjustments should be made according to the reproduction
characteristics of the speakers. Depending on the speakers, a passive
network may not be necessary. If you are unsure about this point,
consult your authorized Alpine dealer.
4.2ch (FRONT/REAR/SUBW.) mode
2.2ch (3WAY) mode
54
5.4
183.6
72.4
55
5.5
187.0
73.7
56
5.6
190.4
75.0
57
5.7
193.8
76.4
58
5.8
197.2
77.7
59
5.9
200.6
79.1
60
6.0
204.0
80.4
61
6.1
207.4
81.7
62
6.2
210.8
83.1
63
6.3
214.2
84.4
64
6.4
217.6
85.8
65
6.5
221.0
87.1
66
6.6
224.4
88.4
67
6.7
227.8
89.8
68
6.8
231.2
91.1
69
6.9
234.6
92.5
70
7.0
238.0
93.8
71
7.1
241.4
95.1
72
7.2
244.8
96.5
73
7.3
248.2
97.8
74
7.4
251.6
99.2
75
7.5
255.0
100.5
76
7.6
258.4
101.8
77
7.7
261.8
103.2
78
7.8
265.2
104.5
79
7.9
268.6
105.9
80
8.0
272.0
107.2
81
8.1
275.4
108.5
82
8.2
278.8
109.9
83
8.3
282.2
111.2
84
8.4
285.6
112.6
85
8.5
289.0
113.9
86
8.6
292.4
115.2
87
8.7
295.8
116.6
88
8.8
299.2
117.9
89
8.9
302.6
119.3
90
9.0
306.0
120.6
91
9.1
309.4
121.9
92
9.2
312.8
123.3
93
9.3
316.2
124.6
94
9.4
319.6
126.0
95
9.5
323.0
127.3
96
9.6
326.4
128.6
97
9.7
329.8
130.0
98
9.8
333.2
131.3
99
9.9
336.6
132.7
Delay
Number
Time Differ-
ence (ms)
Distance (cm)
Distance
(inch)
Cut-off frequency
(1/3 octave steps)
Slope
Level
HPF
LPF
HPF
LPF
Low
range
speaker
----
20 Hz -
200 Hz
----
FLAT, 6,
12, 18,
24 dB/
oct.
0 to
−12 dB
Rear
high
range
speaker
20 Hz -
200 Hz
----
FLAT, 6,
12, 18,
24 dB/
oct.
----
0 to
−12 dB
Front
high
range
speaker
20 Hz -
200 Hz
----
FLAT, 6,
12, 18,
24 dB/
oct.
----
0 to
−12 dB
Cut-off frequency
(1/3 octave steps)
Slope
Level
HPF
LPF
HPF
LPF
Low
range
speaker
----
20 Hz -
200 Hz
----
FLAT, 6,
12, 18,
24 dB/
oct.
0 to
−12 dB
Mid
range
speaker
20 Hz -
200 Hz
20 Hz -
20 kHz
FLAT, 6,
12, 18,
24 dB/
oct.
FLAT, 6,
12, 18,
24 dB/
oct.
0 to
−12 dB
High
range
speaker
1 kHz -
20 kHz,
(20 Hz ~
20 kHz)
*
----
FLAT
*
6,
12, 18,
24 dB/
oct.
----
0 to
−12 dB
Low range
High range
(Different from actual display)