MikeSt Posted July 25, 2013 Share Posted July 25, 2013 Hi Everyone, I switched out Bob Crites tweeters from my Heresy IIs to my KLF 20s and now there is a hiss in the left KLF speaker. I swtiched the speaker wires to check if it was the amp and it wasn't. I took out the tweeter on the KLF to check the wires and they were on right. Does anyone know what this could be? I never heard the hiss when the tweeters were in the Heresy IIs. It's just in the left speaker. Quote Link to comment Share on other sites More sharing options...
Schu Posted July 25, 2013 Share Posted July 25, 2013 In for an answer to... I have never experiened this. Quote Link to comment Share on other sites More sharing options...
MikeSt Posted July 25, 2013 Author Share Posted July 25, 2013 I switched tweeters between the KLFs and now the hiss is in the right speaker. The hiss may be the record's hiss but one tweeter definitely has a louder hiss than the other. It's like it sounds thin and has a shrill tone in the highs, making it also sound louder than the other one. When I switched them left and right they both said K 76 K. Quote Link to comment Share on other sites More sharing options...
moray james Posted July 26, 2013 Share Posted July 26, 2013 I would suggest that you disassemble the offending tweeter and look to see if the diaphragm was installed and seated correctly in the first place. a small gap between the diaphragm assembly and the motor or the lens and the diaphragn could cause noise or you may be hearing rubbing. the diaphragm should be registered onto three locating studs on the top surface of the K79 motor. while you are there take a very good look for signs of any kind of deformation or other damage to the diaphragm and the voice coil. keep us posted. best regards moray james. Quote Link to comment Share on other sites More sharing options...
MikeSt Posted July 26, 2013 Author Share Posted July 26, 2013 I talked to Bob Crites and he said the K-79 (KLF) has a larger magnet assembly than the K-76, so he guesses I should not interchange them. I took apart the hissing K-76 and didn't notice anything. I had been using the Heresys for PA speakers for band practice, and was driving them pretty hard especially in the high freq, maybe that had something to do with it. I'm just going to put it back in the Heresy because I didn't notice the hiss when it in there. Thanks for trying to help me though, I appreciate it. Quote Link to comment Share on other sites More sharing options...
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