High Efficiency Loudspeakers

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

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 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. 

@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