How many of you use DSP processing w Phantoms - room correction, EQ, etc?

[MountainGuy]

Curious if any here use DSP processing to correct for room, EQ and such with equipment such as the DSpeaker Anti-Mode Dual Core or the DIRAC based system such as that from miniDSP. 

If you do, what do you do?  What improvements have you experienced? 

And did you check for phase and or timing?   I'm assuming that the Phantom is already optimized so that this is not a factor in the DSP correction? 

Thanks in advance for any comments.