High Efficiency Loudspeakers

@mozartfan      You did say nothing new,  i agree for 100%. But 
seas exotic wide range is not expensive to compare Voxative especially wooden cones (3-4 times chipper ) and to make sure the yours is best , you have to listen other brands Cheers 

I look at drivers voicing/accuracy/percision/soundstage, 1st,,,then i ck db #'s. SEAS has low db, but incredible hifidelidty,,even better db ratings are SB and possibly equal/superior. I choose speaker 1st, THEN amp. 

if you havea  $50K amp and a  2 cent sounding speaker =  2 cent sounding amp. Go figure. 

Wood cones are definitely worth exploring given there will inevitably be trade off between the usual gains and losses. Gains include slight increase in tonal density, losses include a slight loss of apparent speed.

My JVC mini system sounds fabulous, albeit on a small scale with a pair of wood cones bookshelves.

If this JVC blurb is to be believed birch seems to the best wood of choice.

https://uk.jvc.com/microsite/uk/woodcone/story/index.html

I think you are slightly wrong , i think is he , not she 

there are a couple really good interviews on YouTube with Voxative's  designer she explains how they are made and why she used wood. 

 short of it was the wood has lower mass then the paper ones and is  much stiffer. 

google Voxative on YouTube ( Steve Gothenburg did one and others  others) 

Excuse me bache my mistake. You would never use solid wood to make a speaker cone as it's shape will change with humidity so I assume it is some kind of laminate. Since the cone has to move it has to be light. It also has to be very stiff. It has to be tough enough to tolerate at least a little abuse. IMHO there are much better synthetic materials to make cones out of. Yes they look nice but that is not the point. Looks really should not mater. It is all about the sound. If there was something special about wooden cones other manufacturers would have already considered it. One would have to assume it is a marketing tactic. So, I would approach these with a bit of skepticism. I would not only listen to them but I would want to speak to long term owners to get an idea of their longevity.  

I heard them in the 9.87 system but can not differentiate them from the times I head that system with paper drivers. Their speakers are more specific than the just cone material, of course. I will guess that you will not get a good answer in forums but would get a straight forward answer from Voxativ or their dealers. Voxativ does provide plans for simple baffle construction that would be a big savings over their piano cabinets. 

is not necessary do it horn, all loudspeakers using this  and made by this high end  company  using wooden cone is not horn design

Bache, it all depends on how the cone was made and what species of wood was used. If the horn is made too thin the wood will resonate like a musical instrument but thicker cross sections of a medium density wood like teak would be very well dampened and tough enough to tolerate some abuse. Are they superior to aluminum or plastic horn's? I do not know. They are certainly IMHO nicer looking and wood allows a different group of people to get involved in making the actual speaker element. A good woodworker can make everything but the drivers which are readily available. I have never made a horn myself but I have a large lathe perfectly capable of doing a horn up to 48" in diameter (the swing on the outboard side is 24") You would do it with a segmented blank.