MkIV X-Over - This works fantastic in standard Cheviot cabinets. I’ll wait until I try the circuits with the planned new cabinets before I solder the parts in place. I may need to make adjustments, so for the time being, I'll leave the terminal blocks in place, to allow easy changes. Check out the PDF file on the HPD_015 link for a blow by blow, on how the values were established, plus diagrams, original parts (measured values) and a complete list of parts used.