Deox all your connection points on that speaker,or you will build up a form of resistance from oxidation of combined metals, Maggies did have a bad problem with the voice coils separating from the diaphragm and that i understand was because of the adhesive used, now i understand they have fixed the problem, i had a pair and sent them into get rebuilt and it cost me, when they came back they rattled so bad i gave them to Goodwill after waiting 6 weeks to come back home, now my Acoustats get all the love. and now with Covid 19 I love them more!!!