The FPS planar is supposed to be good from 180Hz to 20KHz from the spec sheet. It does not detail the method of test they used. Most likely an infinite baffle, so on an open baffle the response can be very different.
The response was after figuring out the CLIO Pocket was resetting my time gate, so this is with about a 4mSec time window. Hence the LF response cutoff around 250Hz. That was at the first reflection point in my room with the line array on the floor.
Will see what happens with MA Room EQ and subs running.