When I first got these monitors I felt quite bad because I literally couldn't hear the C3 frequency. This was because the sound bouncing on the wall canceled out the sound coming directly from the monitors. I had 4 mattresses lying around so I built a little half cubical around my desk and this made the sound not drop out at important frequencies. Of course the frequency dips in some places but nothing drops out completely.
If there is something I would have wanted it would have been a little more precise settings on the speaker for room treatment. I have it set on max boost on the low frequencies and max decrease on the highs. And I think I would have turned them even more if I had the chance. I guess I just have to treat my room a little more but I am satisfied with the sound now
As a side note I really enjoy not wearing headphones all the time. There is a big difference between headphones and monitors, but in my humble opinion I feel like you can't go wrong with headphones (despite the annoyance of wearing them and not being able to play sound to other people in the room). You might not hear the bass all that well through headphones and you will certainly not feel it but the sound is much more accurate through headphones (if you have good ones). I sort of feel like playing music through my speakers muddies up the sound a bit. The stereo difference is also big and I feel like the monitors brings more warmth and emotion than the very accurate ( and robotic, if you will,) sounding headphones might be doing. It feels like I can pinpoint right where the sound is coming from somewhere between the monitors while in mono and the hardpanned sounds are not as hardpanned! I've been using the DT 770 PRO and i still use them when I want the sound to be more "accurate". If you can afford monitors I would recommend!
A problem I had was the sound of my computer. It isn't loud, but it brings this hiss to listening through monitors that my headphones would have blocked. I sort of solved this issue by strapping my computer to the underside of my standing desk. This mixed with the fact that I have matresses for walls and a matt on the floor makes the computer hard to hear and it is ideal for monitor listening!