I edited my post above and changed out the image. I had the wrong transformer model on there.
Mike, it is the stock Klipsch K-691.
XO is DBX Venu360
10" B&C in a custom box ported about 70 Hz
https://www.bcspeakers.com/en/products/lf-driver/10-0/8/10nw76-8
Subs are lab 12s in sealed box