Rockford Fosgate 500.2 - Manual (Page 16)

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XC
ARD
R
ESISTOR
C
HART
Frequency R1 R2
20Hz 169k
Ω
169k
Ω
25Hz 133k
Ω
133k
Ω
30Hz 110k
Ω
110k
Ω
35Hz 95.3k
Ω
95.3k
Ω
40Hz 84.5k
Ω
84.5k
Ω
45Hz 75k
Ω
75k
Ω
50Hz 68.1k
Ω
68.1k
Ω
55Hz 61.9k
Ω
61.9k
Ω
60Hz 56.2k
Ω
56.2k
Ω
65Hz 52.3k
Ω
52.3k
Ω
70Hz 48.7k
Ω
48.7k
Ω
75Hz 45.3k
Ω
45.3k
Ω
80Hz 42.2k
Ω
42.2k
Ω
85Hz 40.2k
Ω
40.2k
Ω
90Hz 37.4k
Ω
37.4k
Ω
200Hz 16.9k
Ω
16.9k
Ω
300Hz 11.3k
Ω
11.3k
Ω
400Hz 8.45k
Ω
8.45k
Ω
500Hz 6.65k
Ω
6.65k
Ω
600Hz 5.62k
Ω
5.62k
Ω
700Hz 4.75k
Ω
4.75k
Ω
800Hz 4.22k
Ω
4.22k
Ω
900Hz 3.74k
Ω
3.74k
Ω
1.0kHz 3.40k
Ω
3.40k
Ω
1.2kHz 2.80k
Ω
2.80k
Ω
2kHz 1.69k
Ω
1.69k
Ω
3kHz 1.10k
Ω
1.10k
Ω
4kHz 845
Ω
845
Ω
5kHz 665
Ω
665
Ω
6kHz 562
Ω
562
Ω
7kHz 487
Ω
487
Ω
8kHz 422
Ω
422
Ω
Butterworth Alignment Q = .707
1% resistors used with 0.047
µ
F capacitors
Frequency R1 R2
20Hz 357k
Ω
357k
Ω
25Hz 287k
Ω
287k
Ω
30Hz 237k
Ω
237k
Ω
35Hz 205k
Ω
205k
Ω
40Hz 178k
Ω
178k
Ω
45Hz 162k
Ω
162k
Ω
50Hz 143k
Ω
143k
Ω
55Hz 130k
Ω
130k
Ω
60Hz 121k
Ω
121k
Ω
65Hz 110k
Ω
110k
Ω
70Hz 102k
Ω
102k
Ω
75Hz 95.3k
Ω
95.3k
Ω
80Hz 90.9k
Ω
90.9k
Ω
85Hz 84.5k
Ω
84.5k
Ω
90Hz 80.6k
Ω
80.6k
Ω
200Hz 35.7k
Ω
35.7k
Ω
300Hz 23.7k
Ω
23.7k
Ω
400Hz 17.8k
Ω
17.8k
Ω
500Hz 14.3k
Ω
14.3k
Ω
600Hz 12.1k
Ω
12.1k
Ω
700Hz 10.2k
Ω
10.2k
Ω
800Hz 9.9k
Ω
9.9k
Ω
900Hz 86k
Ω
86k
Ω
1.0kHz 7.15k
Ω
7.15k
Ω
1.2kHz 6.04k
Ω
6.04k
Ω
2.0kHz 3.57k
Ω
3.57k
Ω
3.0kHz 2.37k
Ω
2.37k
Ω
4.0kHz 1.76k
Ω
1.76k
Ω
5.0kHz 1.43k
Ω
1.43k
Ω
6.0kHz 1.21k
Ω
1.21k
Ω
7.0kHz 10.2k
Ω
10.2k
Ω
8.0kHz 909
Ω
909
Ω
Butterworth Alignment Q = .707
1% resistors used with 0.022
µ
F capacitors
a
d
v
a
n
c
e
d O
p
e
r
a
t
i
o
n Our tests have shown that using 0.047
µ
f capacitors for frequencies below 100Hz, and 0.022
µ
f capacitors for frequencies
above 100Hz, result in more linear crossover control. Refer to the Specifications page to determine the capacitor value
of each supplied XCard.