An interesting argument and I see where you're coming from - but I'm afraid I don't agree! The well-designed full range speakers, if set up properly and the room is given careful consideration regarding furniture, carpets, etc will, or at least should be better overall than a multiple speaker array. The latter requires many enclosures - carpentry is costly and floor-space if often valuable - with multiple amps and cables - more expense - and the sound from cross-over instruments (cello, etc) will be coming at you from 2 or more speakers, so will be less identifiable location-wise. For me, good imaging is hugely important and multiple speakers will reduce imaging considerably.
I really am not sure what you're talking about here. It does not relate to what I said and think you might be confusing my posts with some other.
You talk about multiple speaker arrays, many enclosures, multiple amps and cables. Where did you get this from ??? Maybe you just skim read my posts or I did a poor job of explaining myself. Please read posts #54 and 59 again.
I'm talking about a pair of speakers that don't pretend full range frequency response and augmenting this with 2 or 3 subs. and I claim this approach will yield a superior performance.
In a nutshell I was trying to point out that very expensive full range speakers are going to disappoint because the requirements for quality bass differ from the requirements for a good sound stage. Nobody will position their speakers for the best possible bass performance because I can guarantee you that they will not then image well. Now if you place them where they will image well then the bass is compromised which leads to me suggesting avoiding the top of the line flagship speakers and going for a model or two below because the full range bass just has to be accepted where it is, as it is.
There are manufacturers like Richard Vandersteen who take cognisance of this phenomenon and provide tunable bass sections for his top design
So if no tunable bass what do you do??? You add subwoofers (with built in plate amps) and you place them where they actually serve to smooth out all the peaks and nulls.
This approach will outperform the so called 'full range speaker" in terms of cost and quality sound and I'm not talking about using a pair of Kenwood speakers from the 70's There are standmount speakers from some manufacturers that utilise the exacrt same tweeter and mid-range driver used in their top model at a significantly lower price.