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Vibration Source?

Hello Goners. I haven't been able to find any discussions that address this topic, so here goes: As you go up the fidelity chain, in terms of resolution, do any of you encounter vibrations coming from the speakers that seem to be in the recordings themselves? I have a CD only system, and I detect vibrations in about one in ten or so CDs (usually old ones,) but only on certain tracks. The vibrations come from different speakers, depending on the track, but usually in the mid range. The vibrations on any given track sound to be tied to a specific instrument in every case. For example, in a clean electric guitar part, it's as if the vibration is coming from the guitar amp that was used to make the track, not from an issue with my speaker. However the problem pops up with piano and acoustic bass as well. If I put the same CD in my stock car system, it comes across as low level noise, not vibrations. But I rarely seem to encounter any low level white noise at home, only vibrations coming from specific instruments in a track.  Thanks for your insights.
128x128barnegat666
clearthink
1,421 posts
 
Really I do not think any one here understands what it is that you are talking regarding.
millercarbon's avatar
millercarbon
12,531 posts
 
If I put the same CD in my stock car system, it comes across as low level noise, not vibrations.

This is what gets me. So there’s some sound that is definitely there on the CD, you can hear it in the car, but it sounds different at home.

This I believe is what we call situation normal.

Main thing I want to know is what is the exact nature of this "noise"? Is it ringing? Rattling? Clanging? Scraping? You call it noise in the car and describe it almost as if its steady white noise, but in the home the same sound you call it vibrations? If its associated only with certain instruments and frequencies then its a distortion of some kind and the question is, what?
koestner
671 posts
 
I know what you mean. Christian McBride - Gettin' To It, the last track called Night Train. You can clearly hear something resonating in the left channel. It's coming from the recording. There are other examples, but this one stands out the most.
koestner
671 posts
 
Oh.. I just had a thought. Try listening with headphones. If you still hear it then it's on the recording.
barnegat666's avatar
barnegat666 OP
5 posts
 
     Thanks for the responses so far. I'll try to come with a list of songs that I notice the problem on. One I can think of off the top of my head is Steve Earl's "Goodbye" from the album Train a Comin'. It sounds like a buzz is coming from the right speaker in the midrange that is associated with the acoustic bass. If any of you play guitar or bass, think of an unwanted rattle or amp noise coming from the cabinet that the amplifier drives.
     I guess it might help some of you if I tell you what my system is. I consider it to be pretty revealing, but I haven't heard the "super systems," so maybe it's not. The room is large: 26' wide x 15' deep with a ceiling that is 14' on the sides and 18' in the middle. The speakers are along the long axis, 2.5' from the back wall. They are 8' apart and the listener position is 10' back.

     CD player:  Krell KPS 20i.
     DAC:          Audio Research DAC 3 (I just started playing with tubes.)
     Preamp:     Krell KRC HR.
     Amp:          Krell KSA 200s.
     Speakers:  Thiel CS 7.
     Cables:      All cable is Transparent Audio Ultra mm2. (except the                               digital cable.)

     The speakers are 4 ohm nominal, so the amp runs at 400w per channel. The speakers could ideally use even more power, but that's a very minor issue.
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