Re: FREE MONITOR PLAN: 12" Coaxial "Smithers Wedge" by Michael Smithers
The BMS 12CN680 is definitely voiced towards live music/vocal, and high sensitivity. My opinion is that just dropping a 15" coaxial in this box will not be the solution. For instance, the BMS 15" coaxial (15CN680) will still have a 3" VC, and same basic design, to address sensitivity over LF extension. Even the tri-axials, with a 4" VC would need a sub to address the LF of EDM music, and that driver will not work in this box.
As an aside, it seems to me that there are physical constraints in the design of coaxial speakers, due to the magnetic fields. I notice that most coaxials (or professional ones, where it is not just one driver slapped on the back of another), have very similar VC sizes. I know a lot of physics goes into the interaction between the magnets, and this seems to be one of the outcomes.
