I think you are right, that is what I should do. Keep my 9s in front and replace the rear 4000s with 12s. I have been thinking of the 12-3. I want the speakers to match, both sonically and visually. I will be changing the 9s to white so now I am wondering what the white on the 12=3s looks like. Trying to decide which color of the 12-3s would be best with the white 9s.
Hi
I do also have the 9 as front and 4000 as rear, and I have thought how the 12-3 would sound compared to to the 4000. I think my 4000 sound better for movies than the BL3 as rear though.
I hope you will be able to test a setup with BL9 and BL12.