competent studio designers utilize soffit-mounted loudspeakers when applicable. It solves various inherent acoustical issues. Who are you speaking for here when you state they have "not been used for a long while"??
this is certainly not a "fact".
this statement doesn't make any sense at all. Soffit-mounting of loudspeaker into a high-mass/rigid/non-resonant front wall solve specific acoustical issues irregardless of what is done with other boundaries in the room. Studio design is dependent upon the design requirements. If adhering to LEDE/RFZ principles, side walls would be angled to redirect the first-order sidewall reflection away from the listening position and towards the rear wall diffractal/diffusers.
do you by chance design studios - or what grounds are you making this authoritative, global claims that "they are not used"?
I think we can reconcile this one pretty easily. If we consider market share of the different types of studio monitors in the studio monitor market, the vast majority of those monitors are small, active, prosumer models. This market has grown significantly, if for no other reason than it didn't exist years ago. And it's almost not worth mentioning the fact that home based "recording studios" vastly outnumber the professional studios that have the budget to pay for a purpose built room with built in soffit mount monitors....and who knows, maybe the person who designs the room will also design the monitor speakers...further reducing the number of commercially sold soffit mount monitors?
But at the same time, any blanket statement about what "everyone" is doing is automatically false. I mean, are we talking recording studio? Mixing studio? Mastering? All are different, and the differences are always neglected. (I just know they are different; I don't do any of these things!)
I've been following PresentDayProductions YT channel, and they've been sharing their journey toward mastering for Atmos. It seems like it is legitimately becoming the next big thing.
But by mentioning Atmos, we're talking about mastering. So comments about Atmos/ multi-channel do not apply to the previous steps in the production process!
In the case of mastering for Atmos, I am assuming that soffit mount monitors are not ideal, since you would be combining soffit mount with non-soffit mount speakers. But I suppose the door is open for someone to design an Atmos mastering room where all the channels are soffit mounted? Sounds expensive! I'll let the acousticians work out if that works and how they would accomplish that!
But at the moment, it seems like a pretty safe bet to invest in something like the 8381s, since they can be full range stereo mains with fancy low frequency control, and they can be seamlessly integrated into an Atmos system by combining the other Genelec monitors. I bet that this is what Genelec is banking on. Or they're selling these at a loss just to show off. It could go either way.