.
IEMs are more likely to be used with a battery powered portable device (smartphone, DAP, mp3 player, etc)
As I said I am done trying to explain it it's already explained (without use of extreme examples) quite good and understandable to less technically experienced readers on Wiki.
I see my mistake wrt the 3.5mm port being limited to 2.6Vrms instead of 2.yes my bad... 2.6V (forgot to SQRT the measured 6.9V
I'm becoming more and more convinced most of them don't even know what the hell they mean, and are just parroting what they saw someone else say. That very thing gets said about my main speakers (Dynaudio Confidence C1) all the time, as if some amps would just magically shove in extra "current" into the speaker at any given volume beyond what it actually requires to play at that volume level. I'm certainly no amp engineer myself so that I could claim any deep understanding of them, but what I mostly don't get is how the hell would any reasonable amplifier run out of "current" - whether the claimant considers that to be voltage or amperage regardless of using that specific word - while only using a couple of watts during peaks at listening volume like in my case, thus well within its power supply capacity? Especially when the impedance curve doesn't even dip under 4 ohm to be a difficult load in general, other than the somewhat low sensitivity if one wants to really blast at high volume. And the claim seems to usually specifically be that they need the "current" regardless of volume level, not just to achieve high volumes. And when I disagree (over at other forums) given there's certainly no clipping etc. happening to indicate running out of power of any definition, I get piled on.
You have discovered Audiophilia Neurosis on the other forums that are into voodoo science. They pile on as they don't know what they are talking about and giving amps "magical" properties. Or as some have said before "Use my product and the magic happens"! Problem is Amir is not a trained magician with years of experience so he can't test for the magic. Subjectivists know magic when they hear it. Objectivists are still trying to find it. Stick around here and you will know the subjectivist emperor has no clothes even though thousands of followers will say he is dressed in a very nice suit. It is unbelievable!
Thanks, that was an informative read, even my addled brain managed to understand at least some of it
Yep, cables are something like 2 meters (as is the listening distance) at 2x2.5mm2 thickness (so 2x14 AWG), and a miniDSP 2x4 HD is EQ:ing them. Plus now that I finally have the subwoofer in use thanks to said EQ (as room modes were impossible with sub and no EQ), that's even less load on the main channel amp.
5 watts is more than enough for headphones and orders of magnitude more than enough for line level (2 volts into 10k is 1.6 milliwatts.
You have that backwards. The speaker goes to 50 ohms where it is most efficient. A speaker is designed to put out constant power over the f range with constant voltage. To do this the impedance varies because the speaker efficiency varies with voltage. The voltage is CONSTANT thru the bandwith so the power is lowest at 50ohms.
That first graph shows that damping factors of 5, as high as that graph goes, are already almost a flat output. Any decent amp will be way above 5 and that graph will be flat at 1. Its a voltage divider with very little division, inaudable.
