Crossover point of 5.25” vs 6.5” in two way bookshelf

As you point out, this is possibly a typo or could be driven by other factors like mid-woofer breakup modes.  The proof of the pudding in this case though is in the off-axis response, and if possible the dynamic range.  

I don't see either crossover point as completely unreasonable.  The Stereophile review of the V and Erin's Audio corner review of the G2 both show near optimum off-axis, horizontal response. Not the same 2 speakers, of course, but this shows that Sonus Faber is paying close attention, and doing a better job than many. 

Between the two I suggest the higher crossover for the 6.5" driver...this means that the tweeter does not have to go that low. The larger driver reduces the load on the tweeter.

 @erik_squires  Yeah I enjoy Erin’s content but I’ve come to realize that what he likes I generally don’t. I’ve heard several of the speakers he liked in his reviews and I did not like them at all, and some of the ones he didn’t like I have liked…so 🤷‍♂️ His reviews are well done and very detailed but I can’t base my decisions off of them I don’t think.

@sounds_real_audio at what point is too high of a crossover for a 6.5” driver. From some of Erin’s reviews he talks about larger drivers “narrowing up” at higher frequencies, so I assumed you’d want to crossover a larger driver at a generally lower point.

OP: 

Not saying his reviews should sway you, but that the speaker reviewed showed optimal off-axis performance.   Also, take a look at the Stereophile Dynaudio review that just came out.  They used a relatively high crossover point without issues. 

For many years it’s been known that crossover in the 2000 Hz range can be very audible. Pushing above that to around 3000 Hz can be smoother, more “ideal”. Guessing also that the 6.5” driver is smoother out to 4 kHz than the 5-1/4” driver, and can maintain that smoothness at higher power levels.