http://www.geocities.jp/mister_terch/zakki05aging124.html

Like the guy who did these tests, I have no clue what to make of this. Kind of neat looking at all the waves though. The KH-K1000 is a Kenwood headphone, by the way.

RS-1 is 'sharp', and the HD650/K701 etc are 'smooth'.

That is pretty much exactly what one would expect.......?

Sine waves, or square waves?

Biggie.

The input is a single-cycle sine wave. It shows how well damped and controlled the headphone diaphragm (and associated parts) is. I can't read the Japanese to know what the test conditions are, but the outcome shows that at 100Hz, all the tested headphones exhibit some underdamped "overshoot" after the waveform stopped, with the Edition 9 being the best in this regard,. At 1KHz and 2KHz, however, the HD650 shows the best control and the least distortion and the K1000 being a very close second.

The input is a single-cycle sine wave. <snip>

Thanks for that explanation, Ti.