3way with 10″ Excel, 7″ Excel, and Millenium tweeter by Seas.
Woofer: 3.0 cubic foot vented, single straight port 3″ x 4″.
Midrange: 0.75 cubic foot sealed
Note: Woofer in reverse polarity to midrange and tweeter. Large value midrange cap. Very large high-pass cap. Complex design with high parts count.