John Willett
Veteran
I was actually talking about the combination of a super cardioid and a figure of 8 mic since most of the people use a cardioid on a M/S pair due to it's wider polar pattern. I would love to make a comparison recording between a super cardioid/fig.8 and a cardioid/fig.8 pair.
A super-cardioid as the mid in an MS set-up is fine.
It's only when you have a gun mic. with an interference tube as the mid that you can have problems and have to be very careful. This is due to the comb-filter effect with the off-axis lobes of the gun.