[phybeau]

Last week I took some measurements with Room EQ Wizard in my nearly completed CR.
With the microphone at 125 cm height (approx. ear height) and at 38% from the front wall, here are the results:



As you can see from the waterfall, the room is pretty ‘dead’. More dead than some people prefer, but I kinda like it this way. It sounds tight.

The graph showes two very large dips at approx. 435 and 495 Hz.

I then generated both frequencies (sine wave) and just listened walking through the room.
The results were shocking:
when moving your head vertically at the listening position, at some point/height there was practically nothing the hear at others is was very loud.
Because of this experience and the calculation with the Real Traps Graphical Mode Calculator (results below) I suspected it had something to do with the room height (242 cm).



In trying to be clever I thought: what if I slope the ceiling above the listening position?
So I attached som 15 mm tick mdf to the already (12 degree) sloped absorbing ceiling (see pictures below)



I took some new measurements:



~WRONG!~
I suspected it would create some new deviations but apart from that, the dips were deeper! Deeper than with the flat absorbing ceiling!

So I’m kinda stuck, out of ideas/solutions.

It is on one hand not a bad room at all: I like the way it sounds, and the mixes I’ve done so far, seem to translate very well. And now of course I know where to pay extra attention to when EQ-ing. And I can always raise or lower my head 20 cm to double check..

On the other hand, If I can (without completely reconstructing everything) within the possibillities of this small room, make it (slightly) better, I’m all ears.

Any suggestions?

In order to give a better idea of what I have to work with I made some pictures.
The room dimensions are 4,00 meters deep, 2,42 meters high and the width goes from 2,35 to 3,90 meters. The ceiling is completely fiiled with rockwool (24 cm deep) apart from the space between three beams in the middle. (I have not decided yet what to do with that,..absorbtion, diffusion?)
In the sketcup drawing I left out the ceiling absorption, otherwise you cannot see a thing...
The speakers are Genelec 1030 and the mic used for measuring: a sE-Electronic SE-2.



Thanks in advance !,

Phybeau