Further, I notice that is just the opposite for the same crossover using PSD 2002. Does the DE 250 produce a forward wave when the positive signal is connected to the black post?

I was wondering, as I am using that driver in my Econowave speaker, and will be using it in the 4 PI w/ 2225H. I have found the DE 250 to be more transparent, but not very engaging for lack of a better word. Perhaps I need to flip polarity? Realizing it is already flipped in that second order crossover, so maybe it needs unflipped?

Confused,

Russellc

As an aside, most compression drivers are wired so that positive voltage results in negative pressure. The diaphragm moves "forward" out of the gap, which is away from you when looking down the throat of the device.