I took all of the drivers out of the cabinet, cleaned them up, vacuumed the dust off the crossovers, Deoxted the level switch (which seems to be working) used some 3/8 x1/4 closed cell neoprene weather strip to seal the drivers in the cabinet. Didn't do anything to the crossovers. They sound pretty darn good, nice base and sparkling highs. Just may have to hold on to these for awhile. Nora Jones sounded fantastic.