treating live room ceiling

[DanDan]

SAC, foxfyr, why don't you try omitting the insult stream for a little while?
It's boring.
Also let's not start shifting goalposts, the OP asked for a solution to his 110Hz severe dip. (later corrected to 135Hz)
It is your suggested solution which is under scrutiny here.
SAC, if you really believe in your theory, I will do the test. Let reality win here. I will look forward to seeing your diagram over on the correct thread.
Also please do answer, is a MiniTrap OK with you?
I am ready to do the test. Let's roll.
DD

[DanDan]

So, no answer on the MiniTrap? I will go ahead with the test anyway.
Again, I urge anyone who feels SAC is a pest, to let Jay know that directly.
He got banned before as foxfyr, that doesn't happen easily or often. We are talking fundamentalist here. A Dubya Voter.
DD

[SAC]

Good luck exploring the exotic realm of the superposition of multiple signals.

Being that it is a fundamental concept in physics and in acoustics, it is good thing to become familiar with the basics.

you might start here. Ethan has a pretty good article - and it avoids all of the complex multiplication and division in inherent in the "higher maths" that you so abhor.

RealTraps - Creating a Reflection-Free Zone

And considering that it is you who consistently follows me around like a fly objecting to concepts that you do not understand, you might also want to explore the concept of a "pest" as well.

[DanDan]

Did the test.

floor reflection what to do ?
A vertical MiniTrap was inserted in the reflection path.
Third Octave 125Hz Pink Noise.
Measured at the reflection spot on the floor.
Before 87dBCs
After 87dBCs

Happy St. Patrick's Day

DD