Mallette Posted May 22, 2002 Share Posted May 22, 2002 I was just listening to a Franck organ choral on a Telarc CD. It has a very quite passage with extremely low (32hz or lower) fundamentals. The left midrange horn began to flutter at the resonant frequency. The right did not. Is it blown? Should I check for debris or something? Dave ------------------ David A. Mallett Average system component age: 30 years. Performance: 21rst Century Quote Link to comment Share on other sites More sharing options...
Guest BobG Posted May 22, 2002 Share Posted May 22, 2002 What does it do on other music? Quote Link to comment Share on other sites More sharing options...
Mallette Posted May 22, 2002 Author Share Posted May 22, 2002 I've listened to a wide variety of music at various levels over the past 3 days, and I've not heard this before. It only occurs on one speaker on about three notes somewhere down in the less than 40hz range. I've noticed it on no other recordings. It is repeatable. Pretty rarified, but still unacceptable. Dave ------------------ David A. Mallett Average system component age: 30 years. Performance: 21rst Century Quote Link to comment Share on other sites More sharing options...
Malcolm Posted May 22, 2002 Share Posted May 22, 2002 Have you tried swapping channels to see if the problem moves from one speaker to the other? Quote Link to comment Share on other sites More sharing options...
lynnm Posted May 22, 2002 Share Posted May 22, 2002 Don't ignore the possibility that this behaviour may be due some anomally in the recording itself - especially as this is the only recording with which you can hear this effect and is reproducible. To paraphrase an old acronym WSI=WSO Weird stuff Stuff In = Weird Stuff OUT. Quote Link to comment Share on other sites More sharing options...
Mallette Posted May 22, 2002 Author Share Posted May 22, 2002 Bob/Lynn: Haven't reversed leads. I do not expect this to reverse. It is really, really low bass and sounded identical (except for the flutter) from each horn. I will do so just to eliminate the issue. If it is present on the recording, then reversing will be useful. Frankly, it really sounds like a woofer luffing. How this could come out of a MIDRANGE HORN mistifies me. It is definitely related to resonance, as it is there for about three notes, then disappears as the music goes on down for another three or four. Dave Dave ------------------ David A. Mallett Average system component age: 30 years. Performance: 21rst Century Quote Link to comment Share on other sites More sharing options...
djk Posted May 25, 2002 Share Posted May 25, 2002 If the Klipschorns are 82 or newer it may be the bananna plugs from the high end section where they plugs into the bass section. I thought I had a blown K55M, after replacment it sounded the same. I cut off the bananna plugs and used spades. Pull the speaker away from the wall while playing and give the wire a shake. If it makes noise fix it. Quote Link to comment Share on other sites More sharing options...
Mallette Posted May 25, 2002 Author Share Posted May 25, 2002 Nope, 1976 models. I've not pursued this further as it has only occured on that one disc. I belive it to be an aberration, though I intend at some point to pull the unit out so I can access the m driver and see if I can pin it down. Dave ------------------ David A. Mallett Average system component age: 30 years. Performance: 21rst Century Quote Link to comment Share on other sites More sharing options...
John Warren Posted May 26, 2002 Share Posted May 26, 2002 can you hear it on headphones? Quote Link to comment Share on other sites More sharing options...
Mallette Posted May 27, 2002 Author Share Posted May 27, 2002 Haven't tried that. List member Gil McDermott visited Saturday and I was unable to duplicate it using the same material. After the fact, I found that I'd inadvertently left the amp in mono after playing a 78. May try again today. Of course, if it goes away I shall not be too sad. Dave ------------------ David A. Mallett Average system component age: 30 years. Performance: 21rst Century Quote Link to comment Share on other sites More sharing options...
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