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

I agree. The difference in crossover point does not make any sense. Especially since they are both using the same tweeter. It would not surprise me that the spec for the Sonetto I is a typo.

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.