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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: psychoacoustics?? maybe, but for everybody posted by paco on October 10, 2000 at 08:05:38:
1. Neither my ears nor somebody elses ears are a priori more blessed than others.
2. Sonic experiences of others should be respected as such. Reasons maybe debated, but not in a personally pejorative or attacking way.
3. I don't understand psychoacoustics as a pejorative term. It is used to understand reactions on a more complex level, like system matching etc., and personal preferences. My appreciation of Maggies has psychoacoustic reasons, as somebody elses preference for JBL's does. It is a way to try to understand and keep respect for others preferences.4. Concerning coils: I think that wire length, quality and tension all are audible in a coil, on a maybe sonically separated level than basic ferromagnetic distortion. The latter is IMO a major issue, the others are less (but still) audible.
It makes sense that if there are sonic problems with air-coils resistance or cable length, these pertain to coils with high values (above eg. 3mH). It is possible IMO that there the balance of trade-offs may have sonic points in favour of ferro-magnetic coils, i haven't experienced it though.5. The experiment of listening to the bass driver alone and with the filters is IMO a worthy one, for eg. judging the bass slam, attack, etc.
6. The bass quality of the speaker is however also influenced by the mid and tweeters output at low frequencies. All these must integrate optimally. The final test is anyway the complete speaker.
7. Possible causes must be carefully thought about and maybe discussed
8. If some effects are not audible with this test, and are audible with other tests, i use the tests which show more differences, even when these differences seem minor, or if they have no 'sensible' reason on the first view.
9. I have repeatedly, confirmed by independent co-listeners, heard differences in upper midrange and lower highs quality, when only changes in the bass crossover were made (MG 3.3): a) crossover steepness with same brand parts and coil orientaions. b) Replacement of standard air coils with ferro-magnetic ones, or CFAC coils. I expect the same to be even more the case with a MG 1.6. My explanation is that 'distortions' or sounds as low as -60 dB (maybe lower) can be clearly detected by the human ear. That this makes crossover design not easier and could make one paranoid is obvious.
10. I hope that the messenger of this bad message is not killed for telling it!
11. The marked improvement in applause sounds with CFAC coils, compared to very good quality air coils from Intertechnik was audible in the midrange crossover, not the bass crossover. This 'only' improved general truth of timbr higher up, and increased the sense of natural 'sweetness' and flow.
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Follow Ups
- some points to end the debate (hopefully) ... - Arbelos 16:26:25 10/11/00 (0)
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