Dynamic range of music, in relation to headphones

[Steve Eddy]

Where do you get that one has a faster IR rise and fall? Look at the x axis.

se

 

[MatsGyver]

One travels past 0,02 one does not.

 

[UltMusicSnob]

From the OP usage, since it appears germane to the poster's concerns: In the context of science/math/engineering in general, "dynamic" means "change", not "movement". In general, "dynamic ___" refers to something that is changing in time, relatively quickly. "Dynamic range" in sound is about the endpoints of the spectrum of changes in amplitude in a given signal, or, when talking about equipment, the endpoints of the spectrum of amplitudes the device is capable of providing as output. 
 
Of course, the speaker diaphragm is actually moving. Its speed of motion is intended to produce a compression wave (acoustic signal) for which the slope of the line graphing compression/rarifaction (vert) versus time (horiz) reproduces as closely as possible the slope of the line graphing signal voltage vs. time. So you don't want it faster per se (steeper slope), you want it precisely matched.

 

[Steve Eddy]

One travels past 0,02 one does not.

You said previously, "If it covers more ground, in a Shorter amount of time, I would Call it faster."

Again, look at the x axis.

se

 

[MatsGyver]

Yes look at the Y axis and the X axis, and see that the first cover more distance on the Y axis on the same amount of time on the X-axis. Something that travels further in the same amount of time, we call being faster. As in quicker, moore speedy, not as slow.

 

[MatsGyver]

From the OP usage, since it appears germane to the poster's concerns: In the context of science/math/engineering in general, "dynamic" means "change", not "movement". In general, "dynamic ___" refers to something that is changing in time, relatively quickly. "Dynamic range" in sound is about the endpoints of the spectrum of changes in amplitude in a given signal, or, when talking about equipment, the endpoints of the spectrum of amplitudes the device is capable of providing as output. 

Of course, the speaker diaphragm is actually moving. Its speed of motion is intended to produce a compression wave (acoustic signal) for which the slope of the line graphing compression/rarifaction (vert) versus time (horiz) reproduces as closely as possible the slope of the line graphing signal voltage vs. time. So you don't want it faster per se (steeper slope), you want it precisely matched.

Thank you. But to get it precicely matched with a sinus wave that goes from -35 to clipping point hundreds of times in a couple of minutes it has to be fast right? But there probably is a point where it is fast enough, and anything beyond that is too fast. It will probably never get perfectly syncronised with the digital signal, but one should strive to get them as Close as possible.

Maybe a diaphragm that is too fast in Blues is just right for classical?

 

[Steve Eddy]

Yes look at the Y axis and the X axis, and see that the first cover more distance on the Y axis on the same amount of time on the X-axis. Something that travels further in the same amount of time, we call being faster. As in quicker, moore speedy, not as slow.

If that's how you're looking at it, then just turn up the volume on your amp and whatever headphones you're listening to will be "faster."

se

 

[MatsGyver]

They both peak at SPL 90dB or whatever SPL Tyll measures at. One requires less Power and is faster than the other. If you give the other more Power it will Reach a higher SPL and the Direct comparison will no longer be a Direct comparison.

 

[MatsGyver]

The interesting part is the one With the faster driver has less distortion in reaching 100dB SPL at 20hz. As if one have less resistance than the other making it slower and giving more distortion to Reach 100dB. Increased electrical damping and/or mechanical? Probably increased electrical damping due to lower impedance? Making it more voltage hungry at 30 and 300hz as shown in square wave responses, resulting in more distortion.

Can anyone make sense out of this? Maybe they are driven by two different amplifiers? Here are the Cold numbers:

Bold is the one With the larger travel on the IR Y axis and less distortion at 20hz.
Volts RMS required to reach 90dB SPL:
0.242 Vrms vs 0.254 Vrms

Impedance @ 1kHz:
361 Ohms vs 364 Ohms

Power Needed for 90d BSPL
0.16 mW vs 0.18 mW

Broadband Isolation in dB (100Hz to 10kHz):
-3 dBr vs -2 dBr