The ^3 wasn't a problem. It was combining it with cf that was confusing. One should use ft^3, or cf, but not cf^3, which says "cubic feet cubed" (and why I said ninth dimensional).

The f^3 actually should be written as ft³ (³).


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris