My room is the same size and I use B&Ws which are well regarded for classical music. I would try the 600 series and CMs.
For classical music, I like BBC school designs such as Spendor, Harbeth, Stirling etc. or of of the more modern variants such as PMC and Proac.
I also use Proac Tablettes which have a natural mid but are not as resolving as the B&Ws.
For classical music, I like BBC school designs such as Spendor, Harbeth, Stirling etc. or of of the more modern variants such as PMC and Proac.
I also use Proac Tablettes which have a natural mid but are not as resolving as the B&Ws.