>
> If the subtended angle between the cardioid capsules is increased to
> 180 degrees (+/-90 degrees either side of centre) so they are back
> to back, the result is an omni because the bidirectional components
> subtract and cancel each other out.
Hi greg
So, when signals from two coincident capsules are mixed together, the
relative amplification due to similar qualities summing may follow a
predicable curve based on the polar pattern and relative angles of the
capsules.
However, from your explanation I have a hard time grasping how two
cardioids at 180 degrees would sum to mono to be the equivalent of an
omni. It seems like that would entirely depend on the 180 rear
rejection being exactly 6db lower than the on-axis response. Or is
that what defines a cardioid? It seems to me there is a fair
difference in polar pattern from one maker's cardioid to another. Or
am I wrong with this presumption?
John Hartog
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