Ahhh yes I see what you mean. Hmm. Don't know, never thought about that. Probably some 'noise' as the voice coil and the suspension moves not perfectly smooth, that what you guys mean? Hmmm again.
Jan
Jan
Don't want to put words in Dave's mouth, but yes - I think that's mostly it.
I have never formally tested it either.
I have never formally tested it either.
May i say most drivers planet10 regards as having good micro detail at same has very wriggled frequency response and by that we must suppose their group delay timing plots also wriggles up and down in hole audio band. Many are Fostex and Mark Audio full range drivers on his prefer list. By having these distortions make them very difficult to take serious winning a micro detail competition and call them a better driver i think.
Have you actual listening experience with any of these or are you just making assumptions?
dave
Have listening experience two models from MA rest are from datasheets and reviews with measurements.
Its not that i don't think they can sound entertaining and interesting when they out of box with no correction, they actual sound some different and reveal notes one haven't heard before compared example headphones or reference speakers and it really stands people free to choose that sound no problem. Problem is that you up of hat throw a parameter called DDR with non exiting paper documentation from industry and subjective call them a better driver, had they not had that wriggled response curves (distortion) you would be in better position to call them better driver if they then still could perform more low level detail without the wriggles.
Which MAs? And the context. We know that datasheets just get us started and tell little about how drivers sound.And we still are sadly lacking measurement tech that can adequately quantify a speaker, and even less that correlated what we hear with what we measure.
And most reviews of the drivers are pretty positive.
Lots & lots of paper… not necessarily with that term, but with terms with less substance.
dave
Yeah but that goes down with signal and thus don't constitute a separate 'noise' of the driver. It disappears when the drive signal goes to zero.
Jan
Cones have mass and don't stop right away. If signal stops they are still moving -- at least for awhile -- that is itself a noise source. In this case we are discussing DDR, which is the lower limit of the drivers SN in the precense of of a higher level signal, so we can safely ignore the not playing anything scenario.
dave
Well... Do you think that could be measured or recorded? E.G. Superimpose a low level signal on a higher one then see how well it survives on different drivers.
Been thinking about it. Not sure what metric to use to describe it, but I think it could be detected then perhaps quantified later. My guess is that it's complex, changing with level and with frequency.
Will see what I can do about coming up with a test.
Will see what I can do about coming up with a test.
DDR testing split to new threadhttp://www.diyaudio.com/forums/everything-else/273330-low-level-detail-experimental-search-test.html
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