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Polk SDA 1C malfunction
F1nut:
--- Quote --- These speakers had been modded using the usual mortite
--- End quote ---
Do yourself a huge favor and get rid of the Mortite as it actually prevents the driver baskets from coupling to the cabinet. Replace it with Armacell or the like.
Sir Thrift-a-Lot:
BTW, are the two tweeters by chance wired in series? (Given the driver configuration this wouldn't surprise me.) If so, when one goes out, they all go out. Like Xmas lights. You might pull one good tweet from the other cab and test before you get too deep into xover work. Or just check the one tweeter with the bad one jumpered. This may change the xover frequency, but at low volume for brief testing it shouldn't hurt anything.
GraphicFX:
--- Quote from: Sir Thrift-a-Lot on May 19, 2015, 11:24:00 PM ---BTW, are the two tweeters by chance wired in series? (Given the driver configuration this wouldn't surprise me.) If so, when one goes out, they all go out. Like Xmas lights. You might pull one good tweet from the other cab and test before you get too deep into xover work. Or just check the one tweeter with the bad one jumpered. This may change the xover frequency, but at low volume for brief testing it shouldn't hurt anything.
--- End quote ---
Last year a tweet went out on his right speaker, the other worked fine (same speaker) I already tried reversing the two tweeters yesterday, and still no sound. I'm first gonna replace the bad tweet and see if that fixes it. If still no sound than I think I'm gonna jump the polyswitch and see what happens. unless someone disagrees with schwarcw's earlier comment.
I thank you all for your concerns and comments.
Andrew
F1nut:
Replacing the bad tweeter will not get the other one working. The problem is most likely the polyswitch as Carl stated, so jump that first.
Replace that Mortite!
GraphicFX:
--- Quote from: F1nut on May 20, 2015, 12:07:51 PM ---Replacing the bad tweeter will not get the other one working. The problem is most likely the polyswitch as Carl stated, so jump that first.
Replace that Mortite!
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After work i'm gonna jump the polyswitch if the good tweet works, than I will replace the bad one. Thanks man. I really appreciate all yours amd carl's help and advice. Oh and it's not mortite, its some thin grey sticky flat material on the flange of the baskets, I work for True Value and sell mortite, this is not mortite
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