Originally Posted by vincik
it would be ok, if i reverse them but then i would have swapped channels... so... whats the whole thing with marking headphones, so we can recognize which side plays what stereo channel? Does it matter at all which way i will put them on? My ears tells me there is no difference but i better ask
It depends on what you're listening to. If you're listening to something with two guitars, a vocalist and a back up choir, a piano and maybe a symphony, and for the most part a properly recorded drum set, they'll be reversed but still don't sound quite right in the sense that positional cues on speakers rely on the playback being wired properly. For headphones, you might not hear both channels in each ear with different path-lengths* to achieve a soundstage like speakers, but then depending on the headphone, it might not fit right - like the angle of the cups on the HD600/650/580 and the earpads on the K701/702/Q701/K712,** andn these can still affect soundstage.
If for example what you're listening is for the most part some drums, lots of vocals about bitchez and hos, and a bass synthesizer making a hit of a bass drum followed by a creeping 40hz bass note for shattering windows, there won't be much Left-Right information for soundstage and so you won't notice reversed headphones as much.
* With speakers, left ear still hears right speakers but it's coming from the right side, and vice versa, so the amount of sound of each note in each channel simulates a positional cue on where the instrument is relative to the others; this is still true in headphones. You might not hear the left channel with the right ear and vice versa, but the amount of sound of that single note in each side can affect. For example, you record a piano, and strike a high note key. This is closer to the right channel microphone, so most of it will sound to the right. Go a scale down/lower, and the next note while still closer to the right microphone, is also closer to the left microphone, and will be recorded accordingly, and so when you play back striking just these two keys, you can notice - with headphones or speakers - that the latter note can be slightly off to the left more.
**rear side/behind the ear is thicker; proper wearing of the HD6xx cans also results in a similar wear pattern on the earpads, although it is not the same as the AKG pads being thicker on one side by design