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In Reply to: RE: He is right but is referring to low level detail posted by JLindborg on September 21, 2012 at 12:31:21:
I suspect that wave pattern is always forming, it just isn't easily seen at lower amplitudes. After all, we're talking a tensioned (when driven) wire -- basically a musical instrument string. So it will have vibratory modes, just as the Mylar will. And the two will interact, as the vibrations in the Mylar mostly reflect off the impedance mismatch at the much more massive wire, and as the wire transmits, messily, its own vibratory patterns to the Mylar. And so forth. I think you could see the consequences of this modal behavior very clearly in the study that BigguyinATL did.
Not to say that behavior isn't messier at high levels. Few consumer loudspeakers can handle high levels cleanly. It's the one area in which the sound I remember from the studio was clearly superior. However, kilowatt amps are used for their instantaneous peak capacity. You can't even get past 64 watts to the tweeter without blowing the fuse. With the 10-20 dB peak/average ratio of acoustical music, a kilowatt amp at full capacity will be putting out no more than 10-100 watts average. And I suspect that just as the ear is tolerant of moderate clipping on instantaneous peaks, it's more tolerant of compression and distortion in drivers. Dynamic woofers typically get into the 10% harmonic distortion range at the upper end of their usable output. Not pretty, but we seem to tolerate it until it gets so bad that you hear doubling because of the Fletcher-Munson curves.
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Follow Ups
- RE: He is right but is referring to low level detail - josh358 13:47:12 09/21/12 (4)
- RE: He is right but is referring to low level detail - JLindborg 15:05:38 09/21/12 (3)
- RE: He is right but is referring to low level detail - josh358 15:47:26 09/21/12 (2)
- RE: He is right but is referring to low level detail - JLindborg 15:52:58 09/21/12 (1)
- RE: He is right but is referring to low level detail - josh358 18:05:56 09/21/12 (0)
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