Basstraps and room placement and geometry is also a great way to reduce these resonances.
The problem with eq is that you can only eq rigth at one place in the room (the ideal listening position), and you can even aggravate dips or bumps in the LF in others places in the room.
In my view EQ comes at a last ressort to fine tune the global response of the room at the listening position, but room adjustement comes first. Bass traps and other absorbers are also the only way to adjust things such as reverb time at different frequencies.