* Frequency response (digitized from datasheet)
32.5	59.98	0.0
34.0	60.68	0.0
35.5	61.51	0.0
37.1	63.31	0.0
38.8	65.82	0.0
40.6	69.23	0.0
42.4	72.10	0.0
44.3	74.16	0.0
46.3	76.45	0.0
48.4	78.14	0.0
50.6	79.29	0.0
52.9	80.58	0.0
55.3	82.28	0.0
57.8	84.07	0.0
60.4	85.83	0.0
63.2	88.09	0.0
66.1	89.46	0.0
69.0	89.73	0.0
72.2	89.83	0.0
75.4	89.90	0.0
78.9	89.71	0.0
82.4	89.44	0.0
86.2	89.23	0.0
90.1	89.09	0.0
94.2	89.04	0.0
98.4	89.00	0.0
102.9	88.98	0.0
107.6	89.01	0.0
112.5	89.10	0.0
117.6	89.25	0.0
122.9	89.42	0.0
128.5	89.58	0.0
134.3	89.66	0.0
140.4	89.80	0.0
146.7	89.91	0.0
153.4	89.97	0.0
160.3	90.07	0.0
167.6	90.21	0.0
175.2	90.33	0.0
183.2	90.46	0.0
191.5	90.55	0.0
200.1	90.68	0.0
209.2	90.81	0.0
218.7	90.81	0.0
228.6	90.69	0.0
239.0	90.55	0.0
249.8	90.58	0.0
261.1	90.81	0.0
273.0	90.77	0.0
285.4	90.70	0.0
298.3	90.80	0.0
311.8	90.97	0.0
326.0	91.18	0.0
340.7	91.54	0.0
356.2	91.81	0.0
372.3	91.95	0.0
389.2	91.91	0.0
406.9	91.77	0.0
425.3	91.70	0.0
444.6	92.58	0.0
464.8	92.25	0.0
485.8	92.01	0.0
507.9	92.69	0.0
530.9	92.98	0.0
555.0	93.20	0.0
580.1	93.51	0.0
606.4	93.64	0.0
633.9	93.95	0.0
662.7	93.73	0.0
692.7	93.71	0.0
724.1	93.93	0.0
757.0	94.29	0.0
791.3	93.44	0.0
827.2	93.21	0.0
864.7	93.23	0.0
903.9	93.07	0.0
944.9	92.62	0.0
987.7	93.53	0.0
1032.5	92.90	0.0
1079.3	92.48	0.0
1128.2	92.34	0.0
1179.4	92.12	0.0
1232.9	91.79	0.0
1288.8	91.43	0.0
1347.2	91.20	0.0
1408.3	90.87	0.0
1472.1	90.60	0.0
1538.9	90.51	0.0
1608.7	90.34	0.0
1681.6	90.07	0.0
1757.8	91.49	0.0
1837.6	91.07	0.0
1920.9	90.53	0.0
2008.0	90.27	0.0
2099.0	90.04	0.0
2194.2	90.23	0.0
2293.7	90.95	0.0
2397.7	90.98	0.0
2506.4	92.06	0.0
2620.0	92.85	0.0
2738.8	92.62	0.0
2863.0	92.53	0.0
2992.8	92.91	0.0
3128.5	93.57	0.0
3270.4	94.41	0.0
3418.6	94.50	0.0
3573.7	94.09	0.0
3735.7	91.94	0.0
3905.1	93.37	0.0
4082.1	93.19	0.0
4267.2	90.51	0.0
4460.7	81.93	0.0
4663.0	80.78	0.0
4874.4	79.72	0.0
5095.4	78.90	0.0
5326.4	78.40	0.0
5567.9	77.65	0.0
5820.4	77.67	0.0
6084.3	78.04	0.0
6360.2	77.80	0.0
6648.5	77.41	0.0
6950.0	77.16	0.0
7265.1	73.29	0.0
7594.5	72.02	0.0
7938.9	70.42	0.0
8298.8	65.34	0.0
8675.1	63.06	0.0
9068.5	60.95	0.0