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I am getting a crackling from both speakers when music hits a certain frequency (in the high range, but not the highest). It doesn't seem to be effected by the volume I am playing it at. I have a 5 channel Rotel amp and a Rotel surround processor. I have only noticed it on cd players connected via analogue out, but I have swapped out the cd player and its interconnects and the problem remains. Any tips on what might be causing this? The fact that it is both channels, that it isn't the source, and that it is only this one little frequency of sound that crackles makes it very frustrating and hard to track down. I have tried various cds, and they all display this behavior provided the music contains this one frequency (Charlie Parker's saxaphone hitting higher notes does it every time).
Follow Ups:
Ironwoods has a good point. You may have a weak connector somewhere that buzzes when exactly the right pitch stimulates it.Check all your connections, including power plugs, for firm grip. IEC connectors on power cords are notoriously flimsy.
The first thing I thought of, though it may be rare, is a loose screw or screws on the tweeters. That can give symptoms just like this.
On the advice above, I moved this thread to the Tweaker's forum. I have since learned that the problem is the cd player overdriving the analogue inputs on the Preamp. I haven't really got a good solution yet except that my equipment are 'pieces of crap', so any help from here would be appreciated. I posted the other thread as a link.
There are cheap attenuators available, or you could make some to test the theory that your CD players are over-driving the preamp inputs. This seems unlikely to me, but it might help with your trouble-shooting.One more thing: are you sure that you are not using phono inputs for this connection? All phono is analog, but not all analog is phono.
Whos make and model speakers?
Strangely enough, when I had 1 speaker crackle, a cleaning and reseating of all RCA interconnects solved it, .....er' maybe it was all the cursing.
... Sorry, couldn't resist that one... (sheepish grin)...I take it you've been through the gamut of switching cables - both interconnect and speaker - and also tried swapping both CDP and amp (via some helpful mate/dealer) in an attempt to isolate the cause....
If you have and the problem shows no change, I'd hazard a guess you've probably damaged either the midrange drivers or the tweeters (depending on the frequency).Only way to perform a quick test is to borrow another pair of speakers and repeat the test...
Weird...
MAY BE YOU SHOULD POST THIS MESSAGE IN THE TWEAKS/DIY SECTION MATE.
Ok. I guess I can, but it doesn't really seem to fit there any better than here. I didn't build the speakers myself and none of the equipment is modded.
but all the tech geeks are there waiting to show people how brainy they are and their proper helpfull.
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