Speaker Design Software

My early projects were designed using the late Jeff Bagby's Passive Crossover Designer spreadsheets.  Before that, I had a copy of LSPCad, and played around with Speaker Workshop, but both had steeper learning curves.  I really think Passive Crossover Designer was a game changer and helped make measurement-based design available to a wider community and lifted up DIY design quality across the board as a result.  Passive Crossover Designer was an Excel spreadsheet that relied on Macros, so over time the tool became incompatible with newer versions of Excel.  Liberty Instruments released a freeware design tool called XSim, which had increased flexibility vs. Passive Crossover Designer and a user friendly drag-and-drop interface for building crossover circuits.  This became my go-to for initial design.  

As I accumulated more experience in speaker design, I realized the importance of considering off-axis behavior and started measuring that for my completed projects.  It began to influence my design process, although at first it was more in design principles and choices.  When VituixCAD came out, it enabled off axis driver measurements to be loaded directly and simulated during the crossover design.  For my most recent projects, I have been using VituixCAD extensively, although I still find that using XSim to come up with an initial design as a starting point is a little easier than starting in VituixCAD.