First time A1 Evo AcoustiX user in a 2.2 setup, MIMO advice needed

[Geertidow]

Dear fellow forum members,

I'm a happy new owner of a Denon X3800H. Today I've spend some time setting up A1 Evo AcoustiX.
Setup: X3800H, KEF R3 meta, SVS 2000 pro, 2.2 setup where the subs are under the mains.
I've done some test measurements and then took a careful 6 repeat measurement on 12 different positions (10 at ear height, 2 slightly below and above MLP (10 cm or so).
I have attached a ZIP file link of the measurements and other relevant files: wetransfer link.

The default setup sounds nice, but I've tried MIMO on 120, 180, 200 and 250 Hz in the hope of improving my 100-200 Hz area.
It doesn't sound good. MIMO on 120 does reasoably well, but the standard setting sounds best.

I lack the right cables to perform REW sweeps with this device since it has no USB in, so measuring what the effect is is difficult at this current moment.
I could do it via chromecast or bluetooth, but I'm not sure if that suffices.

Another question which I have: would DIRAC Art make any sense in a 2.2 setup with all speakers in front position?
Thanks for your insights.

 

[staticV3]

I lack the right cables to perform REW sweeps with this device since it has no USB in

No need for additional cables.

Open REW Generator->Sweeps->Measurement->Save to file, making sure to enable Add Timing Ref.

Open Measure dialog->Playback: from File, click Start

Play the .wav file back on your X3800H however is most convenient for you.
I'd avoid BT, but Chromecast, the Denon's own Streaming software, or a good old USB stick would all do just fine.

The result is a Sweep measurement of identical quality as though you were connected to the Denon directly.

 

[Geertidow]

No need for additional cables.

Open REW Generator->Sweeps->Measurement->Save to file, making sure to enable Add Timing Ref.

Open Measure dialog->Playback: from File, click Start

Play the .wav file back on your X3800H however is most convenient for you.
I'd avoid BT, but Chromecast, the Denon's own Streaming software, or a good old USB stick would all do just fine.

The result is a Sweep measurement of identical quality as though you were connected to the Denon directly.

The denon is not accepting the USB and many other methods failed. I can't even get my old RCA cable to work. I'll see if I can order a usb-c to hdmi cable or something.

I made it happen by casting my screen tot my xbox and then running the sweeps.

I've attached the mdat data.
The MIMO 120 Hz actually sounds good. But long term listening I seem to prefer the standard method.

Any thoughts/help?

Again and again, much praise to @OCA for making all of this.

After some more listening, I would say all MIMO's also sound really nice. But maybe there is a bit too much bass. Or, I just can't really place it. My favourite would be the MIMO120 or normal Acoustix standard. But since I have bigger dip around 160Hz I hoped to clear it with MIMO.

 

[Sokel]

Is that your sub?

(link)

If that so,your some 30dB-40dB down at 250Hz.
You would need a woofer going straight to 500Hz at least so to cross at 250Hz, that's the general rule of thumb.

Around 120-150Hz though seems more than ok if using them as stands and you can get away without full spins staying around there.
Otherwise is like building a whole new 3-way, an entirely different task.

As @staticV3 wrote above, you don't need a connection to your AVR to measure with REW.
Just feed it a .wav generated the way described and and measure "from file" with a timing reference as also described.

 

[Geertidow]

Is that your sub?

View attachment 508527

(link)

If that so,your some 30dB-40dB down at 250Hz.
You would need a woofer going straight to 500Hz at least so to cross at 250Hz, that's the general rule of thumb.

Around 120-150Hz though seems more than ok if using them as stands and you can get away without full spins staying around there.
Otherwise is like building a whole new 3-way, an entirely different task.

As @staticV3 wrote above, you don;t need a connection to your AVR to measure with REW.
Just feed it a .wav generated the way described and and measure "from file" with a timing reference as also described.

I tried it but couldn't figure it out. But I did manage to cast my laptop screen to the xbox and measure like that. See the attached mdat file in the previous post!

 

[middlemarch]

I tried it but couldn't figure it out. But I did manage to cast my laptop screen to the xbox and measure like that. See the attached mdat file in the previous post!

Does your laptop not have HDMI? If it does I would suggest just using that. I've never had a problem with REW just driving a test signal via HDMI to a Denon. By far the most straightforward method in my experience.

 

[Geertidow]

Does your laptop not have HDMI? If it does I would suggest just using that. I've never had a problem with REW just driving a test signal via HDMI to a Denon. By far the most straightforward method in my experience.

I don't, but I might have an adapter from usb c - hdmi. However, as said in the post, I have done some measurements with chromecast, see mdat file.

 

[Chromatischism]

If you aren't getting great results with MIMO, don't use it. He always stated it was experimental. You can get great sound with the normal calibration, so try that.

 

[Geertidow]

If you aren't getting great results with MIMO, don't use it. He always stated it was experimental. You can get great sound with the normal calibration, so try that.

Thanks, and give the measurements, the 100-200 Hz region has room for improvement. Could DIRAC ART fix that, or CamillaDSP (with a dac and amp of course)?

 

[Geertidow]

After a lot of puzzling, this is the best AcoustiX can do.

I'll await the new OCA versions before switching to Dirac ART.

The sound is good though.

 

[Geertidow]

Made some more measurements. Still deciding whether ART is the better choice.
Had a friend tweak with the software engine to do some custom DSP.
All in all not bad, but still wondering what ART could do.
Any thoughts?