What can I do to improve my 2nd system?

OH, also, try listening BELOW the tweeter axis. :) I find this sometimes more pleasant. There’s nothing wrong with that either.  I ended up using Isoacoustics speaker stands which let me tilt the speakers up.

Best,

Erik

Well, saying you need DSP EQ is kind of an oversimplification of measuring first, then treating, but the miniDSP units are very capable especially for subs.  I would keep your sub and enhance with it.

Speakers vary by a great deal on what their ideal toe-in is.  Focals for instance, to me sound best with zero to just a little toe-in.  You can see in the measurements with some speakers that on axis they may have big peaks and valleys which get a lot smoother off axis.  Toole was also probably thinking of less constrained rooms.  Anyway, it's a total judgement call so try it and let me know if that's a good choice for you.  As a long term solution though consider the GIK acoustics bass traps with diffusor panels.  They will give you a sense of air and space while helping to focus the image and reduce bass standing waves.

The minimum, in order:

1. Thick curtains on the windows. Double layer if you can.
2. GIK Acoustics corner traps with scatter plates in the corners from floor to ceiling.
3. DSP EQ on the sub.

Try crossing the speakers in front of you, that will minimize early side reflections. 

When you realize the advice above works absolutely stunningly consider GIK combination bass trap/diffusors for the side walls as well.