Nearfields dont have the capability to give you accurate information in the 20-30Hz. Below 40Hz better to not take into consideration at all in the mix.
In a small room or a room that has not been treated well acousticly the lows can only give you trouble.
People that own bad or small rooms and have thes monster speakers or even subs are kidding themselfs.
For a small/Bad room better to work with a monitor with a response till 60Hz.
Most rooms canot deal with the wave lenths of low freq's and standing waves are hard to deal with.
In general with nearfields dont waste your time with the lows under 40Hz.
As a side line. I think that many people here dont put the room as the first priority before EVERYTHING.
You can have the most expensive mic+pre+monotors, yet it will still sound bad in a poorly treated room.
I would not spend mega bucks on a monitor or mic or mixer or pre before my room was not treated...waste of money !!.
The difference between
a homestudio and
a pro one is that the pros build the room first and then fill it with equipment. The homerecordist frist goes out and buys the newest soundcard and then just plops it in a room.
Some after are chasing and fighting the room to make their new gear try to sound good.