teaman Posted September 12, 2017 Share Posted September 12, 2017 Hi guys, question I am working with right now. I just received a pair of Gen 1 Heresies from 85 and either the owner didn't realize they were bad or during shipping the one K-77 tweeter was damaged...anyways one of the K-77's is not working. I see quite a few relatively affordable K-76 tweeters available but not the case for the K-77. I haven't soldered in years and I'm not sure about trying to install a replacement diaphragm. Would it be possible to swap in a pair of K-76 and remove the K-77, or is there a problem with it. Not talking about diaphragms, entire tweeter assemblies. The only answer I could find was in relation to doing so in a Belle back in 2014, where someone advised him not to do so in his Belle but one poster said it would have worked fine if he had Heresies. Thanks, Tim. Quote Link to comment Share on other sites More sharing options...
wvu80 Posted September 12, 2017 Share Posted September 12, 2017 I found the Heresy spec sheet. It shows the K-77 as the stock tweeter with a XO of 6000 Hz. http://assets.klipsch.com/product-specsheets/Heresy-Spec.pdf I thought the K-76 was OEM, but the K-77 is correct to the H1. Here is the Heresy II spec sheet: http://assets.klipsch.com/product-specsheets/Heresy-II-Specs.pdf 1 Quote Link to comment Share on other sites More sharing options...
teaman Posted September 12, 2017 Author Share Posted September 12, 2017 Yeah, I don't think the K-76 came in until the Heresy II was launched. Dang it, still stumped on this one! Quote Link to comment Share on other sites More sharing options...
Ljk Posted September 12, 2017 Share Posted September 12, 2017 I would stick with the 77, I bet bob crites could install it for you . K 76 is similar to k79 but with a smaller magnet, Imo the k 76 can sound a little shrill at times. 1 Quote Link to comment Share on other sites More sharing options...
wvu80 Posted September 12, 2017 Share Posted September 12, 2017 20 minutes ago, Ljk said: I would stick with the 77, I bet bob crites could install it for you Sure Bob could do it, but who wants to put $200 into $400 speakers? Quote Klipsch K-77F Magnet Assembly with Diaphragm. Use this to make your old K-77M (square magnet) or K-77 (round magnet) tweeters into new tweeters using your original horn. Includes new wires. Shipping will be $13.00 per pair. K-77F Magnet Assembly With Diaphragm $80.00 each or $160.00 per pair. http://www.critesspeakers.com/prices-other_stuff.html What we need is a $50 solution. 1 Quote Link to comment Share on other sites More sharing options...
teaman Posted September 12, 2017 Author Share Posted September 12, 2017 5 minutes ago, wvu80 said: What we need is a $50 solution. That is exactly what I am looking for! Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted September 12, 2017 Share Posted September 12, 2017 Selenium HTM 11-25 or 17-25 horn and Eminence ATP 50 driver. https://www.parts-express.com/selenium-hm11-25-1-exponential-horn-60x60-1-3-8-18-tpi--264-306 https://www.parts-express.com/selenium-hm17-25-1-bi-radial-horn-60x40-1-3-8-18-tpi--264-308 https://www.parts-express.com/eminence-apt-50-super-tweeter-horn-driver--290-530 Will need to put on top of the Heresies. Or you can figure out a way to use the ATP 50 on your K77 horns. Quote Link to comment Share on other sites More sharing options...
teaman Posted September 12, 2017 Author Share Posted September 12, 2017 21 minutes ago, tigerwoodKhorns said: Selenium HTM 11-25 or 17-25 horn and Eminence ATP 50 driver. https://www.parts-express.com/selenium-hm11-25-1-exponential-horn-60x60-1-3-8-18-tpi--264-306 https://www.parts-express.com/selenium-hm17-25-1-bi-radial-horn-60x40-1-3-8-18-tpi--264-308 https://www.parts-express.com/eminence-apt-50-super-tweeter-horn-driver--290-530 Will need to put on top of the Heresies. Or you can figure out a way to use the ATP 50 on your K77 horns. https://www.parts-express.com/eminence-apt-150-super-tweeter-with-horn-100-x-50--290-534 https://www.parts-express.com/community-1-exponential-horn-90x40-non-standard-2-bolt-for-uc1-compression-driver--299-522 Almost looks like those would work as well. All of these P-E drivers and horns seem to be rated pretty good. Quote Link to comment Share on other sites More sharing options...
teaman Posted September 12, 2017 Author Share Posted September 12, 2017 Keeping in the Klipsch family. Is there any other option within Klipsch to do something? Quote Link to comment Share on other sites More sharing options...
CANT Posted September 12, 2017 Share Posted September 12, 2017 13 hours ago, teaman said: Would it be possible to swap in a pair of K-76 and remove the K-77, or is there a problem with it. Not talking about diaphragms, entire tweeter assemblies. Yes, I've seen it done but it is not a drop-in mod... 1. The cut out isn't quite right and would need to be slightly enlarged 2. You'd have to cut the top and bottom of the horns mounting flange and drill new mounting holes to make it fit 3. You'd have to at least slightly adjust the crossover network (K77 is louder than the K76) You can also contact Klipsch about getting a replacement diaphragm? People seem to forget this is an option some times... They used to sell them for about $50ea. I would pass on pretty much all of the aftermarket diaphragms. 1 Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted September 12, 2017 Share Posted September 12, 2017 I think that this is your solution: https://www.simplyspeakers.com/klipsch-replacement-speaker-diaphragm-k77-89486a.html#tab-2 $20 solution. This looks to be the only option if you want to go that cheap. Install looks really easy. Watch the video. Find a forum member nearby if you really cannot solder. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted September 12, 2017 Share Posted September 12, 2017 15 minutes ago, tigerwoodKhorns said: I think that this is your solution: https://www.simplyspeakers.com/klipsch-replacement-speaker-diaphragm-k77-89486a.html#tab-2 $20 solution. This looks to be the only option if you want to go that cheap. Install looks really easy. Watch the video. Find a forum member nearby if you really cannot solder. I don't think they measure very well from what I remember. Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted September 12, 2017 Share Posted September 12, 2017 Maybe, but it is in the budget. Cheap and measure well, use the ATP 50's. Quote Link to comment Share on other sites More sharing options...
Skelt Posted September 12, 2017 Share Posted September 12, 2017 A k-75 or a k79 tweet with their larger magnet plays louder than a k-76 and might be a better match to the k-77. If you don't mind the asthetics you could mount the tweets on top of the cabs.Sent from my SM-G360V using Tapatalk Quote Link to comment Share on other sites More sharing options...
djk Posted September 12, 2017 Share Posted September 12, 2017 " 20 solution. This looks to be the only option if you want to go that cheap. : Don't waste your money (like I did). Quote Link to comment Share on other sites More sharing options...
teaman Posted September 13, 2017 Author Share Posted September 13, 2017 I am pulling the guts out tomorrow to make sure it is in fact the tweeter that is failed and not the Xover. If it is the tweeter that is bad I will probably just replace the entire square magnet K-77. I'm not going to mount a tweeter on top of the speaker itself, if there was an after market Parts-Express tweeter that could fit this I may entertain that option, since it doesn't I wouldn't. I will follow up as soon as I verify where the issue is. 1 Quote Link to comment Share on other sites More sharing options...
CANT Posted September 13, 2017 Share Posted September 13, 2017 19 hours ago, Skelt said: A k-75 or a k79 tweet with their larger magnet plays louder than a k-76 and might be a better match to the k-77. If you don't mind the asthetics you could mount the tweets on top of the cabs. Unfortunately no, they are also quieter... If I remember correctly the K75/K79/K107 is roughly 3db down and the K76 is 6-7db down. This is likely one of the reasons they never replaced the K77 in the La Scalla or Klipschorn, because the above mentioned tweeters definitely cost less to manufacture. Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted September 13, 2017 Share Posted September 13, 2017 Here is a $50 solution. Better move fast as these do not show up often if at all: 1 left, see the last post. Quote Link to comment Share on other sites More sharing options...
teaman Posted September 13, 2017 Author Share Posted September 13, 2017 Thanks tigerwoodKhorns, I had already contacted him. I just broke down and bought a pair of K-77 complete tweeters to solve my problem. Thanks everyone. 1 Quote Link to comment Share on other sites More sharing options...
Skelt Posted September 14, 2017 Share Posted September 14, 2017 Unfortunately no, they are also quieter... If I remember correctly the K75/K79/K107 is roughly 3db down and the K76 is 6-7db down. This is likely one of the reasons they never replaced the K77 in the La Scalla or Klipschorn, because the above mentioned tweeters definitely cost less to manufacture.Thanks for the numbers. I see that a k75 has a closer spl to the k77 than a k76. With a little crossover work the k79/k75 could work.Sent from my SM-G360V using Tapatalk Quote Link to comment Share on other sites More sharing options...
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