Picked up a pair of L-980s that are esthetically challenged and am planning on restoring the cabinets and grills if possible. Looks like the original tweeters were replaced with an unknown 4 ohm soft dome (DTW12X9T25 on rear of tweeter). The sound is off, to my ear anyway, although still impressive. The faceplate on the replacement is smaller than original and one of them was mounted far enough off center to allow air flow around the tweeter. No changes were made to the crossover. Not sure why I