Alpine CDE-HD148BT User Manual - Page 22

About the Crossover - pairing

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Delay Number 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 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 22-EN Time Difference (msec) 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 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 Distance (cm) 122.4 125.8 129.2 132.6 136.0 139.4 142.8 146.2 149.6 153.0 156.4 159.8 163.2 166.6 170.0 173.4 176.8 180.2 183.6 187.0 190.4 193.8 197.2 200.6 204.0 207.4 210.8 214.2 217.6 221.0 224.4 227.8 231.2 234.6 238.0 241.4 244.8 248.2 251.6 255.0 258.4 261.8 265.2 268.6 272.0 275.4 278.8 282.2 285.6 289.0 Distance (inch) 48.2 49.6 50.9 52.3 53.6 54.9 56.3 57.6 59.0 60.3 61.6 63.0 64.3 65.7 67.0 68.3 69.7 71.0 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 Delay Number 86 87 88 89 90 91 92 93 94 95 96 97 98 99 Time Difference (msec) 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) 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) 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, please consult your authorized Alpine dealer. Low range speaker Rear high range speaker Front high range speaker Cut-off frequency (1/3 octave steps) HPF LPF ---- 20 Hz 200 Hz 20 Hz 200 Hz ---- 20 Hz - ---- 200 Hz 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)

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22
-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,
please consult your authorized Alpine dealer.
36
3.6
122.4
48.2
37
3.7
125.8
49.6
38
3.8
129.2
50.9
39
3.9
132.6
52.3
40
4.0
136.0
53.6
41
4.1
139.4
54.9
42
4.2
142.8
56.3
43
4.3
146.2
57.6
44
4.4
149.6
59.0
45
4.5
153.0
60.3
46
4.6
156.4
61.6
47
4.7
159.8
63.0
48
4.8
163.2
64.3
49
4.9
166.6
65.7
50
5.0
170.0
67.0
51
5.1
173.4
68.3
52
5.2
176.8
69.7
53
5.3
180.2
71.0
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
Delay
Number
Time
Difference
(msec)
Distance
(cm)
Distance
(inch)
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
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
Delay
Number
Time
Difference
(msec)
Distance
(cm)
Distance
(inch)
Low range
High range
(Different from actual display)