Bass traps? (to solve a suck out)

bass traps cannot fix a suck out, but you should still treat your room to achieve other benefits.

you can equalize a bit by overlapping your main speakers with a subwoofer, then adjust the phase control and sub level until you reach a desired result. you may not be able to completely solve the issue, but this has worked for me in the past. also, you can try active room correction too.

Bass traps can help change the way audio waves flow through the room, thus help treat both peaks and nulls, but in my case, after i treated my room with bass traps, the nulls were not measurably better. while this is just my experience, i would imaging that it would be a pretty standard result.

i agree, i have some of his products now and i have spoken to him on a couple of different occasions. he is a nice guy and filled with loads of helpful information.

if you have a wide null centered at 61 Hz, your best bet is to try and cross a sub over a bit higher than 61 Hz and boost that null. just be careful not to create other issues with the added low freq energy released into the room. if you use a RTA while you are tweaking the sub settings to properly mate the sub to your main speakers, you can see the results with each turn of the knob. in the end, you will find this to be a very tedious process that can drive you insane.