Help with eq for an asymmetric room with REW

[soypeter]

Thanks @Mike123 for your quick comment.
For clarification: I'm not using the EQ suggested by REW, just manually create and configure filters in the EQ tab seeing the effect on the predicted graph
and then copying them to the RME.
But I wasn't using variable o 1/24 smoothing because I believed that high Q filters could be harmful.
Using var smoothing, a couple of filters could be using Q=10 (max allowed by the RME) to attenuate more exactly the resonances. I'll give it a try.

 

[Mike123]

But I wasn't using variable o 1/24 smoothing because I believed that high Q filters could be harmful.

Let's do a little experiment. I calculated the equalizer for your right channel with VAR smoothing. At 41.65 Hz the calculation produced -8.7 dB and a Q 12. I applied this filter to the Sweep signal from the generator, and generated a response from the EQ to show that the phase rotation was working. The phase actually rotates. Although not as scary as it seemed. Just +-30 degrees.


Now I'll do the same thing, but with your real signal. First, a picture of the applied equalizer.


And then the phases before the equalizer and after the equalizer. As you can see, on a real signal your phase changes a lot. And the filter doesn’t add anything terrible.

 

[soypeter]

Wow Mike, I've learned a lot! It seems I haven't done my homework with REW
Thank you very much,

 

[soypeter]

I'm sharing here my findings in the last few days with trial and error with eq'ing both speakers with the same filters, or individually each channel with different filters.
This is the RF with same eq in both channels:

With each speaker equalised individually:

The SPL and waterfall graphs appear better in the case of same eq for both speakers.
The sound is ok, so I've decided to stay with the same eq for both channels.

In the crossover area (2.8khz) I'm no eq'ing anything, as I founded a strong rotation phase if I add +1 or 2 db in that region.
(I was using a Q=1.5 it is a wide dip)

Thanks again guys.