I should have been more clear,i didn't mean a big V shape,a more milder one. also,doesn't that V begin at the mid treble and ends somewhere in the mid or upper bass?(not the "air" treble,which is above 10kHZ,and sub bass?)
believe me,i'm in no way,shape or form trying to devalue the HE-4,..it just freaks the heck out of me how in the world can it maintain a very good even strength field of magnetic flux or isodynamic magnetic field with only magnets on one side without causing any distortion or dynamic compression at all.(on the other hand,having the magnet on only one side should eliminate reflection which adds speed and air).
iirc,the abyss HP is said to have some distortion but there are those who say it sounds great that way. I think the HE-4 eliminated the magnet on the correct side though,the abyss has it on the ear side iirc.