On Sat, 28 Jun 2014 08:24:28 -0500, Leon wrote:
Yes a single blade set is a wobble dado blade. A two blade set like the
Excalibur still wobbles, just about half as much. Regardless of how many
blades if the flat side of the blade is not perpendicular to the arbor
shaft it is going to wobble.

I'd add that a wobble dado blade has noticeably increased vibration
and sound over a regular table saw blade ~ at least they have done so
in my experience.