With my limted knowledge from reading on this site and Sound & Vision, I get the impression that 4 ohm speakers are the higher quality ones. Is this generally true?
Also, I don't know if the recent failure of my 17 yr old receiver could be due to me upgrading my old 8 ohm center speaker with a 4 ohm newer speaker (didn't realize it was 4 ohm until today). The new speaker works great, but 2 days after I swapped it out for the old 8 ohm speaker, the left and right front channels went completely out. Likely relationship?