^^^Again, I disagree.
Firstly, my findings of extensive testing and making of tips, attempting to increase bass in the iM716, and here the tips sent by the kind people of MEElec prominently effected the low freq, not the other way around. I think you will find most people here that have had similar and extensive experiences testing various tips will agree. Simply turning the volume down, as I think you mentioned, if the bass is attenuated would have exactly the effects you noted. However, on this point we can agree to disagree according to our own experiences.
Secondly, I believe your previous statement is fundamentally incorrect. Do you believe there is not boundary reinforcement for low frequencies as the boundary becomes smaller than the sine wave, ie, a smaller and smaller room will lose wall reflections when the size of the walls become smaller than the wavelength? This could render large woofers nearly useless in a normal sized room, in a car, forget it.
Thirdly, although there is a large degree of anonymity on the web, one should still follow some decorum, as in simple manners. I don't feel statements such as "but things clearly don't happen as the op postulated" follows such courtesy, especially when left unsubstantiated. At least when I posted my hypotheses, I mentioned them as such to try to explain differences we hear with different tips. I am open to discussion to the ideas generated. You have come off here as arrogant and authoritative, and meantime have brought very little to the table.