The nascar and the legend both have centers but they use the center as sort of a “fill”, meaning it helps to lock the center in place but isn’t a hard center in that it isn’t at the same amplitude as the left or right.
Almost all the magic in those two cars comes from their steerable arrays (slight correction to what chefhow said). Those are the only cars that use off the shelf equipment to achieve their results that I have heard.
The legend never fully got there and needs more work to get tot the level the nascar was at, and while it has the tools to do it, it is far from easy to achieve. Mark spent years figuring out how to tune those.
So if someone says they have off the shelf, non-upmixing gear and achieve perfect imaging in two seat, yeah I’m gonna call bs until I hear it.
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