I got onto Dev turns out there was a stuff up with the plots all for the one model .To me It's pretty obvious Exmachina is using FIR tuning, to a spot.
And as YSC and voodooless point out, the graphs are the same for different models.
I also noticed the low freq cutoff is claimed -6dB @ 23 Hz. I'd make it more like 28Hz going by their graph.
So it seems to me they are using FIR tuning to a spot make it look extra good, and then marketing bias to make it look extra, extra, good.
All that said, doesn't mean it's not a good speaker imo.
Just means we need better info, model specific haha, polars, and smoothing disclosure.
And hey, how about measurements when the speaker is not on FIR...the ones with 3ms latency.
Anyway, switching gears...I thought i'd back up my earlier statements that their frequency response and phase graphs don't necessarily mean heavy smoothing.
And that the impulse response could be real.
Got a major version upgrade to Smaart yesterday, and just now tried out it's improved capability with a quick "FIR tune to a spot", on a 4-way main speaker.
Done indoors at about 1m on a synergy, made for 120Hz up.
All graphs below have zero smoothing.
The first shows each of the 4 sections measured acoustic response. I need to say acoustic response because the responses almost look electrical, given how well formed they are. The power of FIR (to a spot)
120Hz high pass on low setion, with xovers then at 300Hz, 700Hz, and 6300Hz. All 16th order linear phase.
View attachment 234314
Second graph is with all sections playing.
View attachment 234315
Third is the impulse response.
View attachment 234318
So i hope that helps show how good 'FIR to a spot' can look....
The question always is, how well does a tune to a spot hold up over polars.
That's the info Exmachina owes customers imho.