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@thespeakerdude , you can see how my subs measure without room correction in the graph below (blue frame is before), thoughts? The numbers in the scale are cut off when I uploaded it from PDF.

@kota1 , You do not want to add another processor. The best way to do it is add 2 subs, one to each channel and stay with a 2.2 system which is what I do, two subs per channel. Remember the main speakers are equal volume at the crossover point and can be included in the distance factor but if you have a point source system the subs of each channel should be right together but the channels separated by 1/2 the wavelength of the crossover point. You could also put them way apart like some people do with a distributed sub system. My own preference is to put all the subs on the front wall, but I also cross at 100 Hz. 

You need to include Hz on the horizontal axis and dB on the vertical. We are need points of reference. Change the size of the file to fit. The subwoofer files are typical. You see the room Modes. Room control is a beautiful thing.

@mijostyn

You do not want to add another processor.

That sounds right, I am going to shelve any tinkering with more processors, etc. I think I’ll go in the opposite direction and try 2.0 with no subs and no dsp when I get the new Sony preamp delivered and will post how it goes. The Paradigm passive 40's go down to 45 hz or so. The active version I use go down to 32 hz which should be fine for music.

They may go down to 32Hz, but that is probably with drop-off and high distortion, and if using 2, more room mode excitation. Subs are to reduce distortion, go deep without roll-off, and reduce room mode excitation. Ideally you cross your speakers higher so they are not taxed with frequencies/excursions where they distort.

@thespeakerdude , the active 40's have a high pass filter switch on the back so I can cross them over with a sub, NP. I'll try both and see how it goes, thanks.