MrDelicious
500+ Head-Fier
They don't. Just listen and enjoy them.
Ima ask this question in a thread that needs a bump and isn't as crowded as the HE-560 thread.
It seems to me that many of the planars varies quite a bit in impedance and even sensitivity/effectivity within the same model. Any ideas why that is so, at least the thing with impedance?
My HE-500 measures 27 and 38 ohms, 5LE measures 41 on both channels and 560 measures 50 on both. All of them out of spec, seen others that measured weird values too. Opinions?
I believe this question came up at some point and some formidable person responded. I forget the exact reasoning, but the conclusion was that most ortho drivers are matched using their actual sound performance, not resistance across the driver. Matching ortho drivers by resistance only would result in channel imbalance.
Yeah, I read that about dynamic drivers, but I was having fun poking things with my DMM. For example, my wife's resistance to me getting the HE-560s right now is off the charts! Almost started a house fire trying to measure that![]()
Anyway, HE-500 is more sensitive than HE-560, which is approx. as sensitive as my HE-5LE, perhaps even less. It seems Hifiman specs ain't too reliable
I just bought an HE-500. I'm new to planar magnetic headphones. I feel a little silly piping music into them constantly for a week, trying not to form too much of an impression before the specified break-in time. First impressions are favorable nevertheless. I couldn't find an explanation handy—why do they need such a long break-in time?
I couldn't find an explanation handy—why do they need such a long break-in time?
Ask yourself this question. Why do items that are allowed to "burn in" always sound better afterwards? Always. The answer is, it has nothing to do with burning in, but has to do with our ears adapting and growing accustomed to the sounds produced.
Anyway, HE-500 is more sensitive than HE-560, which is approx. as sensitive as my HE-5LE, perhaps even less. It seems Hifiman specs ain't too reliable
Specwise for sensitivity/efficiency the HE-560 isn't that much different than the HE-500. 90dB at 35 Ohms vs. 89 dB at 38 Ohms. It would probably be hard to tell the difference, besides there are tolerances and they don't specify the percentage variation, so unit to unit it's a crapshoot.
Hifiman have said that openly in the forums, yet they didn't really specify why, only that their planars needed said burn-in.
I would guess that because so many people seem to erroneously believe that it improves the sound, they just go with the flow. Or maybe they too believe it.