erik_squires How would you plug the speaker ports? There are two of them, each about 4 1/4" in diameter.
An old clean T-shirt will work. :) Just make sure you can pull them out. This will reduce the main bass, but also reduce cone excursion. Will let the subs work with less interference.
But the holes at 61, 77, and 99 Hz are too high for the subs to do much to.
Au contraire, mon ami!!
Look at your sub's output. You have plenty of output at 80 Hz for sure. And here we get into, gee, if your crossover was working really well, you'd have a 4th order low pass at 80, 2nd high at 80, and you'd be able to get your two subs to provide overlapping coverage.
Come on @audiokinesis, back me up here. :)
The peak at 36 Hz is easy to tame with the parametric equalizer in Roon. No real need for a miniDSP for that.
Yeah, I guess you could fix this peak with Roon, and it will sound good, but honestly it rubs me the wrong way. :) This may very well be snobbery on my part, but I like to equalize the individual components separately, then gently cozy them up to each other until they are spliced together as smoothly as a Han dynasty curved back chair. Using major global EQ often tells me I've messed something up in a speaker configuration.
I recently did integrate my subwoofer with my speakers, but it seems I threw away most of the charts. Still, you may find this post I wrote useful. What you are doing is much of the same:
https://speakermakersjourney.blogspot.com/2016/12/crossover-basics-driver-response.html
Best,
E