Back to basics:
Alright, crossovers are fun, but I guess I am getting a little ahead of myself. I am now actually doing the research to find the propper crossover point (instead of guessing). With the help of some of the guys over at the HTGuide forum I think i will be able to get this sorted. Time for the measurements:
Minimum Phase |
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| HDS Nomex | 9930 |
| Click the links above to compare plots. | |
Percent Distortion |
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| HDS Nomex – Near-field | HDS Nomex – 10″ mic. dist. |
| 9930 – Near-field | 9930 – 10″ mic. dist. |
| Click the links above to compare plots. | |
The difference between the near-field and 10″ measurements makes me a little nervous. The level of the driver did not change, only the mic position. The huge difference in distortion levels must be a result of the mic distortion as the driver should have been producing the same distortion regardless of mic position. The mic / preamp did not clip in these tests, but I think it is obvious that they produce a large percentage of the measured distortion themselves. The question becomes; is the mic distortion consistent? Or does it vary greatly with frequency? Can these measurements be trusted at all? The good news is that they do show aprox. the same patterns, even if the details change with mic position.
