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Small drivers vs big drivers

Hi,
I have a question that is always in my mind recently. I see some speakers with small  drivers (5-9 inches) that is reviewed to be able to throw out big sound stage and go down to 18hz-20hz. Some other speakers with big drivers (10-15 inches) though are commented to have 'big sound stage' but can only go as low as 30-35hz. 

To make the situation more complicated, some speakers have small drivers but there are many of them. Can many small drivers be compensate for the size limitation?

I don't know which specs determine a wide sound stage and the ability to reach low frequencies.  What is the pros and cons of each design?

Thank you!

Huy.
Ag insider logo xs@2xquanghuy147

Showing 3 responses by tweak1

tweak1
3,533 posts
 
I am fortunate to have extensive experience with both, but every ~ multi ~ 4" driver speakers I’ve ever heard needed subs. However, I had a 7ft pair with ~ 8 x 6.5s which went plenty deep

I currently own Emerald Physics KCIIs which has a 10" concentric driver plus 2 regular drivers, but their 2.8 series has 2 @ 15" carbon fiber speakers, one being concentric ~ $9K a pair. I hope to have a pair one day soon
tweak1
3,533 posts
 
I neglected to say that speakers like Tannoy have one big concentric driver

Emerald Physics 3.o is a modern open baffle version of it
tweak1
3,533 posts
 
To clarify why, because the EP 3.0 is a large single concentric driver (same design as Tannoy). Compare prices

48hz provides plenty of oomph in most rooms. I am using their KCIIs in a 18 x 38 with vaulted open beam ceiling. Each speaker has 2 x 12 + a 10" concentric driver. It provides ample and very clean articulate bass. I have 2 SVS subs (one Ultra, and one Plus: they are turned off

hth
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