Thoriated_Tiger Posted December 10, 2003 Share Posted December 10, 2003 After nervously waiting for these, they arrive today. My concerns were cabinetery, drivers. All are intact, they actually survived UPS shipping. I hook 'em up and... absolutely no highs. Quick check with multimeter shows open voicecoils on both tweeters So much for "Sound excellent" in the ebay writeup. I guess Klipsch Support will be getting a call from me. Two K-75 tweets, post-haste por favor. And I was SO looking forward to Beethoven's 5th piano concerto on these tonight Quote Link to comment Share on other sites More sharing options...
Cut-Throat Posted December 10, 2003 Share Posted December 10, 2003 NO don't do it. All you need is probably diaphrams. They can be repaired by simply speakers in Florida, where I had mine for my Belles done. Cost me about $70 for the pair! YOu can do it yourself if you are really handy. Quote Link to comment Share on other sites More sharing options...
Thoriated_Tiger Posted December 10, 2003 Author Share Posted December 10, 2003 ---------------- On 12/10/2003 8:27:30 PM Cut-Throat wrote: NO don't do it. All you need is probably diaphrams. They can be repaired by simply speakers in Florida, where I had mine for my Belles done. Cost me about $70 for the pair! YOu can do it yourself if you are really handy. ---------------- I'm handy, but I can't do a thing about open voicecoils.. I removed both tweets, did a continuity check (resistance, actually) and both tweets came up with a big 'ole open. Now I wonder -- the prior owner -- did he/she run these THIS hard, hard enough to blow out both coils? Naah, pain would have ensued long before.. I think I just bought the victims of a catastrophic amp failure. Quote Link to comment Share on other sites More sharing options...
j-malotky Posted December 10, 2003 Share Posted December 10, 2003 Tiger BUMMER.. The last set of Hereys I bought off ebay had blown K77 tweeters. The guy told me he used them every day and sounded great. He must have been deaf to miss the blown tweets!! I bought my diagphrams from BEC here on the Forum. He may have them for your newer Tweets too. Very easy to replace. JM Quote Link to comment Share on other sites More sharing options...
Cut-Throat Posted December 10, 2003 Share Posted December 10, 2003 Nope, A big solid state amp will smoke those diaphrams rather quickly. And because the people that do it usually are stupid enough that they lost their hearing a long time ago, so it doesn't hurt as much. The seller of my Belles (who was an idiot), did not even know that he did not have highs. He thought they sounded fine. Look up simply speakers in florida and give them a call tomorrow. they turned around my tweeters in about 10 days. The $70 included parts, labor and shipping! Quote Link to comment Share on other sites More sharing options...
3dzapper Posted December 10, 2003 Share Posted December 10, 2003 T Tiger, PM Bob Crites here at the forum. His handle is BEC. He can fix you up with a pair of diaphrams that you can easily install yourself. I have bought several different ones from him always speedy service. Bob's email address is: bcrites@cswnet.com Rick Quote Link to comment Share on other sites More sharing options...
Flason Posted December 10, 2003 Share Posted December 10, 2003 Go to this link. BEC's site www.gumlog.com/tweeters/k77alnico.html It shows step by step how to replace the diaphrams. If I can do it, anyone can. I know you have different diaphrams, but the process will be similar. Quote Link to comment Share on other sites More sharing options...
Thoriated_Tiger Posted December 10, 2003 Author Share Posted December 10, 2003 Thanks to all that've responded. I've never torn down a compression horn driver, I've never even seen a diagram of them, and I'm a little bit confused From reading the link provided here by a poster, it seems to me the voicecoil is an integral part of the diaphragm? That is, when I order the diaphragm, new voicecoils will come with them? C'mon, throw me a bone here Quote Link to comment Share on other sites More sharing options...
Cut-Throat Posted December 10, 2003 Share Posted December 10, 2003 No, the Diaphram is just a thin piece of resin coated fabric. That is all you need! - Trust us! Quote Link to comment Share on other sites More sharing options...
Thoriated_Tiger Posted December 10, 2003 Author Share Posted December 10, 2003 ---------------- On 12/10/2003 9:55:02 PM Cut-Throat wrote: No, the Diaphram is just a thin piece of resin coated fabric. That is all you need! - Trust us!---------------- I'm tryin', man.. I really am What bums me out is the fact that my meter tells me there's an open on each tweeter. So the voicecoil themselves also need replacing.. I should be seeing *some* resistance, 6 or 8 or some kinda low-ish value, but all I'm getting is a big fat open. Quote Link to comment Share on other sites More sharing options...
3dzapper Posted December 10, 2003 Share Posted December 10, 2003 TT, The voice coil is firmly attached to the diahram when you get them. I think Kevin was stokin' or smokin' or maybe both. Rick Quote Link to comment Share on other sites More sharing options...
Deang Posted December 10, 2003 Share Posted December 10, 2003 A voicecoil is basically an inductor, wound with magnet wire. To actually melt the enamel off and cause a dead short -- would require a hell of a lot of heat for a long time. The liklihood of that happening is not really very good. The diaphragm has wires, with a plus side and minus side, and one of those very thin wires would burn through long before the voicecoil shorted -- probably from excessive clipping. Get new diaphagms and simply solder them back in and you're good to go. BTW -- the chance of BOTH coils being shorted is really rare. The fact that both aren't working also points to the diaphragms. Quote Link to comment Share on other sites More sharing options...
NOSValves Posted December 10, 2003 Share Posted December 10, 2003 I'll put the good word in for Bob Crites also. I have never bought speaker parts from him but have dealt on tube purchases he is a stand up guy for sure. Craig Quote Link to comment Share on other sites More sharing options...
Cut-Throat Posted December 10, 2003 Share Posted December 10, 2003 Here is what a diaphram looks like Quote Link to comment Share on other sites More sharing options...
Deang Posted December 10, 2003 Share Posted December 10, 2003 Huh, almost looks like the other kind. Quote Link to comment Share on other sites More sharing options...
NOSValves Posted December 10, 2003 Share Posted December 10, 2003 Why do you use the other kind LOL !! Quote Link to comment Share on other sites More sharing options...
Woodog Posted December 10, 2003 Share Posted December 10, 2003 ---------------- On 12/10/2003 10:42:23 PM NOSValves wrote: I'll put the good word in for Bob Crites also. I have never bought speaker parts from him but have dealt on tube purchases he is a stand up guy for sure. Craig ---------------- Another vote of confidence for Bob Crites from me. He repaired a blown Cornwall tweeter for me. Turnaround was 8 days, and he was really reasonable with his price. Forrest Quote Link to comment Share on other sites More sharing options...
j-malotky Posted December 10, 2003 Share Posted December 10, 2003 Here is a link that was posted by Formica last spring in the forum showing how to change the diaphragm in a K77. http://www3.sympatico.ca/bonaz/Klipsch/K77-diaphram/K77-diaphram.htm JM Quote Link to comment Share on other sites More sharing options...
mike stehr Posted December 11, 2003 Share Posted December 11, 2003 If they are anything like a Chorus II tweeter, then the diaphragm is just a drop-in replacement. I bought a couple from Klipsch. You get installation instructions. Quote Link to comment Share on other sites More sharing options...
dbflash Posted December 11, 2003 Share Posted December 11, 2003 If it makes you feel any better my "perfect Cornwalls" also had both tweeters blown. I pulled them out and hooked them up to an amp at very low volume. One was dead and the other one made a scratchy sound. Call BEC, he can fix you up. Danny Quote Link to comment Share on other sites More sharing options...
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