@prof,
So if it’s the case that audio gear isn’t necessarily too good for the product, but that careful and due consideration MUST be applied before any major upgrade to avoid disappointment then some kind of personal strategy might be advisable.
We certainly don't want products that exercise unwanted editorial pressures upon our desired musical message.
The initial premise?
’My overriding first criteria is that my system sound "organic" - wood like wood, flesh like flesh - rather than cold, sterile and having an electronic or metallic quality.’
Absolutely the first criteria I would automatically use to assess any driver from the one in my smartphone / iPad / TV / Hi-Fi system etc.
Far too many speakers seem to fall at this preliminary step. From the budget all the way to the highest of the high end.
Stage 1?
’It uses paper drivers/soft dome. Both those speakers just exemplify the "organic" sound quality I love.’
This is what my current Tannoy speakers provide in spades, as did my Rega’s and the previous Tannoy’s.
Stage 2?
’they were so rich, timbrally colorful, and relaxed.’
Hopefully this is what my next speakers will do even better than the Berkeley’s. Even cheap metal drivers can do good things with timbre, even if those might lack a certain refinement.
’Both use the similar looking Seas midrange/woofer [metal] drivers, so it’s hard for me not to intuit there is something about the quality of those drivers bringing something to the party.’
The promise of enhanced clarity without pain might mean a possible step up from the tried and tested organic paper drivers as used by Tannoy, Wilson, Sonus Faber, Rega, JBL, ATC etc.
From SEAS : "These cones feature extremely high stiffness along with good internal damping. SEAS Excel Magnesium cone drivers are world renowned for their high definition, low distortion and sound reproduction."
http://seas.no/index.php?option=com_content&view=category&id=49&Itemid=246