Replace the 803, with a speaker that don't require a sub, I can make recommendations if you like. :-)
I assume the KCT have RCA or balanced out in addition to the CAST, just run the sub or subs from those outputs.
Happy new year
Peter
I assume the KCT have RCA or balanced out in addition to the CAST, just run the sub or subs from those outputs.
Happy new year
Peter