So, I have those speakers coupled with a Focal Sub One in a ~10m² room (around 2.4m x 4.2m) with high ceiling (part of it is 3m high and part 3.5m). This room has no acoustic treatment at all, is pretty empty appart from my big architect-style/chipboard desk (quite resonant) along a wardrobe sitting in a corner of the room and no carpet on the floor (parquet). You can imagine these type of room tend to excite medium/high frequencies like crazy and have a quite some reverberation due to the high ceiling.
Crossover between the Solo6 ST6 and the Sub One is set at 90Hz, with HPF set at the same frequency on the Solo6 ST6. Here are the Sonarworks measurements taken at the listening position of about 1m from each speaker with an official/calibrated Sonarworks measurement microphone:
First thing to note is that there is a strong interaction between the speakers and my desk at ~100Hz to ~200Hz and ~300Hz to ~500Hz as this has always been there even in other room and with other speakers (see next paragraph and graph regarding this).
Secondly, I think we can definitely see some of the predicted tendencies of the in-room response graph in the rest of my measurements, although it doesn't seem to be as bad as predicted since it stays in the +-3dB range in a room that is less than ideal (high ceiling, not much furnitures to absorb or deflect, no carpet and totally untreated).
For the record, here is a past measurement of my previous Focal Alpha 65 EVO + Sub One setup in a totally different room (can't remember the size but it was a big living room, I'd say around 30m², with standard ceiling height of 2.5m) but with the same desk. This can help have an idea of the interaction between my chipwood desk and monitoring speakers in general:
You can also notice the insane comb filtering that was taking place in this room, I'm relieved to have moved to a better room regarding this.
Also to note: The Sub One is going down to 40Hz at -3dB and not 32Hz as it is adverstised now by Focal. They changed the online spec sheets and manual (both PDF and printed ones) to this 32Hz value a few month after the release because they weren't able to sell as many as they would've liked (hard to justify spending 700€ on a sub that doesn't add any sub extension to your Solo6 ST6, Shape 65, Alpha 65/80 EVO).
Since I bought it right after release I still have the first edition of the printed manual with the 40Hz - 120Hz (-3dB) frequency response written:
