Eyeballing John Atkinson's measurements, the impedance curve of the Volti Rival does not look particularly SET-friendly to me.
I will not pretend I fully understand the measurements, but what JA says in his final comments ("Summing up the Volti Rival's measured performance is difficult: Its perceived balance will depend to a greater degree than usual on the listener's choice of music and the size and acoustics of the room.") just stops me dead in my tracks: IMHO, quality speakers should definitely be "genre-agnostic"...
Those big Radians are what I would be using if I were doing coaxials.
Such high praise coming from you means a lot!
The question is the implementation, and you commented:
The ceramic version will have a bit more low end and might get away with not needing subs; the more efficient neo version would imo very likely need subs.
I would definitely like to get away without needing subs. Could you please clarify what you mean by "ceramic version"? Is it the driver Magnetics / Diaphragm called "
Prime : Ferrite / Aluminum" on the manufacturer's website, please?
I also noticed MGRA Floorstander goes 7 Hz deeper than GRA Super Monitor. Is it just due to the bigger internal volume of the speaker cabinet?
I have been consistently VERY favorably impressed with the Volti Vittora
I wish I could afford this beauty and call it a day...
I have heard a Spatial Audio speaker which used the 15" neodymium Radian coaxial (with the aluminum diaphragm), augmented by a separate dedicated woofer, and imo it was in the same league as the Vittora.
In the same league as Vittora! Wow! Do you remember, by any chance, what model from Spatial Audio were you auditioning, please? Was it
M3 Sapphire or, perhaps,
X3?
I noticed there is a 5 dB difference in sensitivity: 92 dB vs. 97 dB. What are the major contributing factors here, if I may inquire, please? Passive vs. active or more due to the different woofers and tweeters employed in both models?
Your Bohemian is truly a work of art! Just to make this beautiful horn takes a lot of knowledge, research, and experimentation. My most sincere congratulations on such high achievement!