Bass traps? (to solve a suck out)

How broad is the width of the suckout? If it's narrow you should just ignore it. Bass traps or EQ won't help with narrow band suckouts. Try moving your listening position. Sometimes even a half foot in any direction can help.

Hi Gehuva, How do you know you have a big suckout there? And if so, where are the peaks?
Bob

Are your speakers running full range? If not then try them full range and move them another foot out from the wall. If your subwoofer is in a corner then you really need to reconsider moving it out into the room for a more even response.

61 Hz; that's specific.

Before getting into room accoustics, experiment with the positioning and integration between the sub and the speakers. Sounds like a phase issue to me.

Of course, it could be just the microphone or SPL meter you used. They are notoriously inaccurate at lower frequencies. Even the testing labs don't certify below 100Hz.

After playing around with positioning and settings and you still have the same issues, come back and discuss bass traps. A null at that frequency would indicate a fairly large room volume and, probably, an unusual ceiling.

I have a big suck out from 46hz to 60hz which at max xuck out is -15db with a correct meter calibration and measurement software that I just verified last night.
When I move the SPL around even a foot or two it changes everything but the suck out cant be cured to any huge degree so I am curious as to possible solutions.
I think if nothing else I will install my Behringer and use it to give me a 6db gain at 50hz as this is closest frequncy I can manipulate and 6db should be ok for my amp, I bi-amp so I wont add any sonic signature of real consiquence with this limited to only the bass amp.
I strongly advise folks to measure room even if they may not like what they see, use REW (Room Eq Wizzard) software which is free at Hometheatershack.com along with your SPL meter which is calibrated and compensated for within this program. It is my strong belief that most have serious issues with the room they dont even know exist and they only logical resistance to taking advantage of this program is related directly to the fragile ego of many Audiophiles.....finding out the Emperor has no clothes isnt fun but is needed to get to the performance we all strive for.