There is no substitute for cubic inch or in this case surface area


After listening to quite a few speakers, my conclusion is that if you want large enveloping soundstage, you need a lot of drivers.  

I once had a speaker with two 12in. drivers and the soundstage is just floating in the air.  None of my other speakers could do that.

Currently I have a pair of Thiel CS2.4.  It is a very good speaker but with small drivers there is really limitation to what it can do in term of soundstage size.  I really miss that.

andy2

There has been a really large difference in woofer technology over the last forty or fifty years. Once the standard 12" woofer was used in substantial speakers. The bass was large, fat and sloppy. It would depend on the speakers. Some were very inefficient and were not as fat and slow, but still so in comparison to today’s.

What has changed is the throw and speed. So, large, slow woofers have been replaced with smaller, fast, longer throw. They are far more articulate and directional... meaning the images of the instruments in the lower registers are more focused and nuanced. This is a huge improvement in realism. My Sonus Faber have two 8.7" woofers. They do not sound fat... like bigger speakers of the past, but they are incredibly fast, and accurate. The soundstage goes deep into the wall and on both sides of the speakers. 

Today's muscle speakers like the B&W 801 D4 use 10" woofers and develop amazing bass sound pressure levels, but are still very articulate.

Some folks may like the old sound of the old big woofers. 

Just curious, what were the speakers with the two 12in. drivers?

It's a DIY speakers that I made.  It has two 12in. driver on the back of the cabinet and the tweeter is horn loaded with a 8in mid range drivers.

It does not have the speed of the smaller drivers, but it does "big" really well.

I have had infinity woofer towers with 6 - 10 inch drivers. Not for home theater but they play all music as good as it gets.

Most newer speakers have multiple smaller drivers so you could have speed and low bass.  But which one would you rather have: two 8in drivers moving violently or one 12in driver moving gently?

Speaking of soundstage, one 8" woofer can do it very well. It very much depends on electronics, including tubes. I had some vintage GE 12AX7 tubes in the preamp of VAC integrated when I bought it. Then I replaced them with vintage Mullard long plates. The difference was big in every element, and it wasn't really bad even with those GE. Tubes matter, a lot.

As for scale, dynamics and impact, well, that's different subject.