B&w 800 matrix, Could never afford them new.
Had the 801's several versions just never got the needed spl levels out of them
Contacted B&w and actually got a reply about using 2 pair of 801 (one pair upside down) they said wouldn't be much louder.
Well got the 800 matrix here now ( Had to rebuild the Midsection as It got lost in transit years ago)
Whole different animal. Found a Pair of Golden Flute Bass alignment filters for them :)