I did find even with break in the wall mount version of the Ergo could be a little shouty on some recordings. I moved over to the free pace XO design that uses a higher value R inline with the tweeter and prefer that. Not sure if it is solely the resistor value or perhaps the other XO changes. I should mention that the inductors supplied by Stefan for the freespace XO were thicker gauge than I used in the earlier XO so that may also perhaps have an effect.