The B foot also affects the response in the bottom and midrange. It tends to soften or tame the tone and slows the response. Or conversely, a C foot has a fatter bottom octave and a brighter, quicker responding midrange. It's not a huge difference, but it is quite noticeable on most flutes.
In my view, B vs. C foot is a matter of matching to the flute. Some flutes are so bright and lively sounding the C foot is just over the top; the B foot helps tame them. Other flutes can use the C foot to liven them up.
In my view, B vs. C foot is a matter of matching to the flute. Some flutes are so bright and lively sounding the C foot is just over the top; the B foot helps tame them. Other flutes can use the C foot to liven them up.