Eldartford, I don;t doubt yr disc player measures flat on a sine & yr maggies likewise. Try (if feasible) to measure response (FR + PR) on a musical signal at listening position in room & compare to what's on the storage medium -- say the cd in this case.
As to your ears, they are possibly "sensing" a combination two things. 1) that there is info beyond 14kHz (which is what you note, so I'll take yr word for it), because, 2) there is no steep/sudden barrier/filter/drop over 14kHz -- i.e. the sound continues even if yr accuity drops.
People listening to linear extended HF reproduction find the sound "softer" than when there is a sharp roll off within the audible range. Cheers
As to your ears, they are possibly "sensing" a combination two things. 1) that there is info beyond 14kHz (which is what you note, so I'll take yr word for it), because, 2) there is no steep/sudden barrier/filter/drop over 14kHz -- i.e. the sound continues even if yr accuity drops.
People listening to linear extended HF reproduction find the sound "softer" than when there is a sharp roll off within the audible range. Cheers