Bass traps? (to solve a suck out)


I have a terrible suck out at 61Hz. What should I do to address, I cannot move my subwoofer or room.
gchuva

Showing 6 responses by acoustat6

Hi Gehuva, How do you know you have a big suckout there? And if so, where are the peaks?
Bob
Hi Holeneck, you said "bass traps cannot fix a suck out, but you should still treat your room to achieve other benefits."

That is a completly false statement. Bass traps do indeed flatten peaks and raise nulls IE: fix suck outs. They also narrow the width of the peaks and nulls among other benefits.

Bob
Onhwy61 said "A bass trap is a passive device that can only dissipate acoustic energy from a room. As such it can never eliminate a null in room response since it cannot add energy into the room."

The energy is allready in the room (if your speakers/equipment are capable). The problem is a null is created when the waves come back to you and meet where you are positioned and those freq are cancelled and therefore not heard. Just the opposite of a peak where you are positioned at the peak of the waves coming together to reinfore that freq. A bass trap decreases the wave strength (reflection) and therefore decreases the null and at the same time brings down the peaks.

Onhwy61 said "But in that case you didn't really have a bass null, but two bass peaks."

So, have can you have peaks only and no nulls?

Bob
Hi shadorne you said "LOL. Bob is quite correct "

Actually now that is pretty funny... and a first!

Bob
Hi Shadorne, I knew you were not laughing at me,the fact that I was "correct" is pretty funny and probably a first for me on Audiogon.

You said, Since you have bass down to 16 Hz then you can think of the subs role as "fill-in" duty...

What would need filling in? Below 16hz?

Bob