End of a long quest to vanquish sibilance.


As some of you are aware, I’ve spent nearly two years attempting to root out this annoyance, along with fatigue, from my modest system. No one knows just how frustrating this has been more than the handful of forum members who’ve provided numerous suggestions and insights along the way. You gentlemen know who you are and I’d like to thank you again for your ongoing generosity and camaraderie. Eliminating the source of fatigue (DAC) proved easier than the sibilance.

Having swapped out everything except speakers, with no impact on sibilance, I identified a pair of monitors that 1) I could afford, 2) are universally praised and 3) come with a refund policy. I figured this was the only thing left to try, aside from power conditioning.

When the new speakers arrived, I noticed they were a bit taller than my Silverlines so in an effort to compensate for the difference in tweeter height relative to my ears when seated, I removed the concrete pavers under my speaker stands. These are clearly visible on my virtual systems page.

When the new speakers were hooked up, I pressed "play" on my Jay’s transport remote and was immediately shocked. The sibilance was gone! I put the Silverlines back onto the stands and the sibilance was still absent. That was about two months ago and the sibilance demon has yet to reappear. Although I preferred the sound of the Silverlines and returned the other speakers, if it hadn’t been for them, I wouldn’t likely have solved this problem.

Perhaps my experience will help someone else. I was familiar with the maxim "everything matters" but I still failed to consider one "thing" that was sitting in plain sight the whole time I was tearing my hair out.

So, I will reiterate : "Everything matters" actually does mean every thing!

 

 

 

 

 

stuartk

@philliprcook 

I was thinking it had something to do with the pavers, rather than the height.

If I lift myself up a few inches from my listening chair, so that my ear is positioned roughly where it used to be with pavers in place, I hear no sibilance.

You are far more knowledgable than I am but I find it very difficult to believe that every vocal CD I own is equally flawed in this regard. 

Is it possible then that since it's not height, it could be the increased rigidity of the speaker vibrating the tweeters? 

 

@philliprcook 

If the stands themselves had been shortened, then I suppose they would be more rigid. But that's not the case, here.  

Now the stands are in contact with the hardwood floor, which certainly has more mass than the pavers, if that matters. Also, I wasn't using single pavers -- I had two pavers butted up against one-another under each stand. Perhaps that was a factor? 

Perhaps someone with more expertise in such matters will comment.

 

Concrete, being a denser and stiffer material than wood, tends to have a higher resonant frequency and may be a reason for increased high end.

@philliprcook 

You may be right. From what I can tell from listening, it seems to be more a function of the material than the height change.