
Q = 1
Q = 2
Q = 5
Q = 10
f
< f
O
< f
f / O
f
< f
O
< f
f / O
0.907 1.102
0.884 1.131
0.863 1.159
0.837 1.194
0.820 1.220
0.805 1.242
0.792 1.262
0.781 1.280
0.742 1.348
0.657 1.523
0.572 1.748
0.485 2.062
0.399 2.506
0.319 3.130
0.250 3.999
0.193 5.192
0.147 6.814
0.111 9.002
0.084 11.94
0.063 15.87
0.047 21.13
0.036 28.15
0.027 37.52
0.020 50.01
f
< f
O
< f
f / O
0.962 1.040
0.952 1.051
0.943 1.061
0.931 1.074
0.923 1.083
0.916 1.091
0.910 1.098
0.905 1.105
0.886 1.129
0.842 1.188
0.792 1.263
0.733 1.364
0.664 1.507
0.585 1.709
0.500 2.000
0.414 2.414
0.333 3.001
0.262 3.819
0.202 4.945
0.154 6.479
0.117 8.552
0.088 11.33
0.066 15.06
0.050 20.05
f
< f
O
< f
f / O
0.981 1.020
0.976 1.025
0.971 1.030
0.965 1.036
0.961 1.041
0.957 1.045
0.954 1.048
0.951 1.051
0.941 1.062
0.917 1.090
0.889 1.125
0.855 1.170
0.811 1.233
0.758 1.320
0.693 1.443
0.618 1.618
0.535 1.869
0.449 2.228
0.365 2.737
0.290 3.453
0.225 4.443
0.172 5.798
0.131 7.632
0.099 10.10
Amp
(dB)
-0.10 0.824 1.214
-0.25 0.783 1.277
-0.50 0.747 1.338
-1.00 0.705 1.418
-1.50 0.677 1.478
-2.00 0.654 1.529
-2.50 0.635 1.574
-3.00 0.618 1.617
-5.00 0.563 1.776
-10.00 0.457 2.189
-15.00 0.368 2.720
-20.00 0.290 3.445
-25.00 0.225 4.439
-30.00 0.173 5.795
-35.00 0.131 7.630
-40.00 0.099 10.09
-45.00 0.075 13.41
-50.00 0.056 17.83
-55.00 0.042 23.75
-60.00 0.032 31.65
-65.00 0.024 42.19
-70.00 0.018 56.25
-75.00 0.013 75.00
-80.00 0.010 100.0
f / O
f / O
f / O
f / O
Band-Pass
2-Pole Pair
Appendix A
25 Locust St., Haverhill, Massachusetts 01830
Tel:800/252-7074, 978/374-0761
FAX:978/521-1839
e-mail: sales@freqdev.com
Web Address: http://www.freqdev.com
Fax on Demand: 978/521-5178
Amplitude Response Curves
0.1
1.0
10.0
2
3
4 5 6 78
Normalized Frequency (f/fo)
2
3
4 5 6 78
-80
-70
-60
-50
-40
-30
-20
-10
0
A
Normalized Frequency (f/fo)
1.0
0.9
0.8
0.7
0.6
-5
-4
-3
-2
-1
0
A
1.1 1.2
1.4
1.3
1.5 1.6
Q1
Q2
Q5
Q10
Q1
Q2
Q5
Q10
39