Well got my DSP1124P a few weeks ago, picked up a UMIK-1 mic and lots and lots of trials and figuring out sweeps, moving speakers around. 80hz XO, 90hz XO and more sweeps etc
I cannot get the M22 to 60hz, they fall off at 95hz.
The EP350 well falls around 65hz.
Had a drastic drop ar 60hz and 82hz, but after moving my seating ahead 1.5ft and the M22 another 8" or so off the back wall I got the 60hz pretty well gone, but cannot get the 82hz to boost. Actually it came up 8db.

But, oh the bass is so much sweeter. not so boomy, tighter punchier. But, I realize the EP350 is not what I want.
Going to try a EP500 and may end up going SVS Plus or Ultra.
But, I do see I need the M5HP's

If you have EP350's you should look into the DSP1124P


Anthem MRX520
M5HPv4
VP160HPv4
QS10v4