roozy Posted October 11, 2007 Share Posted October 11, 2007 Howdy, I've had my Chorus II's brand new since 1992. One of the tweeters has stopped working. Just looking for any input on possible causes, repair costs or ease of self repair. No obvious indications of loose connections or broken wires inside. What kind of voltage and or resistance readings should I get at the crossover or tweeter. Guess I could dig into the other speaker and take some readings. Thanks. Quote Link to comment Share on other sites More sharing options...
STL Posted October 11, 2007 Share Posted October 11, 2007 I believe replacement diaphragms are about $30 each, but you might consider replacing the ones in both tweeters because I don't believe Kilpsch sells the textile diaphragms (like your speakers likely have) anymore so you have to get the poly ones. I suggest swapping the tweeters in the speakers and if the problem follows the tweeter then you know its the problem, else if the problem stays with the same speaker then it's likely the crossover. My money is on the tweeter, though. You can call 1-800-KLIPSCH and get the parts you need. Quote Link to comment Share on other sites More sharing options...
BEC Posted October 11, 2007 Share Posted October 11, 2007 You can measure on the tweeter terminals after disconnecting the wires. You should read about 6 ohms on a good diaphragm. A bad one usually reads open (infinite). Bob Crites Quote Link to comment Share on other sites More sharing options...
WMcD Posted October 11, 2007 Share Posted October 11, 2007 I replaced a diaphragm in the tweeter of my e-Bay Quartets. I obtained the diaphragm from Klipsch. It came with installation instructions which had been through a copier more than it needed. It is attached. Installation is easy, with three (?) bolts on the horn driver. I assume your motor board and horn interface is similar to mine in that the Chorus is the big brother to the Quartet. The motor board is made of MDF. Once the horn was out I put some superglue on the screw holes (and let it dry) just to harden up the MDF before putting the horn back in. It is a good idea to make note of which wire goes where on the horn driver when you take it out. Then use some masking tape to hold the loose end of wires to the motherboard so they don't fall back in the box. The connectors are just automotive type push on devices. No soldering. I should have taken pictures when I did it. Maybe you can post some pix as an education for others. WMcD Tweeter Diaphragm Replacement.pdf Quote Link to comment Share on other sites More sharing options...
roozy Posted October 11, 2007 Author Share Posted October 11, 2007 Thanks all for the input..... Dead tweeter open, good tweeter 8.4 ohms. Good tweeter works in other speaker. $59.68 to replace both diaphragms as they ARE poly. About 2 weeks turnaround. Piece of cake to make the repair. Thanks again. Quote Link to comment Share on other sites More sharing options...
Mikekid Posted October 15, 2007 Share Posted October 15, 2007 http://cgi.ebay.com/Klipsch-Horn-PAIR-K-79-K-Tweeter_W0QQitemZ250176284782QQihZ015QQcategoryZ137944QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Ask seller...may be the original type diaphragm. I purchased a pair of these a couple of years ago from auction...they were the original type (phenolic sp) Kept as spairs. GREAT speakers! Mike Quote Link to comment Share on other sites More sharing options...
jerohm Posted October 17, 2007 Share Posted October 17, 2007 --- motor board is made of MDF --- no way ... cabinet may be, but I will bet my bottom dollar the motor board is void free marine (like?) plywood. Quote Link to comment Share on other sites More sharing options...
roozy Posted October 30, 2007 Author Share Posted October 30, 2007 I got all excited when the FedEx package from Klipsch came[]......... then I opened it and found diaphragms for something other than my tweeters[:'(]. Looks like midrange diaphragms. I need to return them and try again. Quote Link to comment Share on other sites More sharing options...
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