Quote Originally Posted by martyh45 View Post
Hi Mike,
I am using Circuit lab. I have no Idea how to feed the program FR data from the drivers or if it is even possible.
Great site, Marty - thanks for sharing that. I need to carve out some time to play with that. I see PCD being complementary to Circuit Lab. The advantage PCD will give is that it incorporates the actual FR and Impedance measurements from the drivers and allows highly accurate simulation of your system, including phase. You also have other speaker-specific variables you can adjust such as driver/baffle offset, so you can model off-axis responses. I'm still learning to use the tool, but it produces amazingly accurate models. Best of all, it's free if you already own MS-Excel.