I have a pair of Model 19 enclosures and a choice to make about the lf driver. I own a pair of 416z from Valencia's. I have a pair of 16 ohm GPA drivers for the hf horn. I also have a pair of 8 ohm GPA hf drivers. So, I can build a passive x-o scaled to 16 ohms, or I could sell the 416z's and buy a pair of GPA 416-8C.

Any guess as to the best choice?

thanks
Les