I am sure there are smaller, but the ProAc 1SC is a world class speaker, within its frequency limitations, and quite small.
Smallest Bookshelf Speaker Worth Listening To
Does anyone have any opinions on the smallest bookshelf speaker worth listening to> I found the Kans to be quite good in a bookshelf system, but wonder if there are others that are even smaller in size. I remember some years back being taken by the small size of the Acarian Alon Petites and they sounded great in a full blown setup. So what is out there today?