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

@12many

It would be interesting to see if a rubber or heavy fabric pad between the floor and the paver and the paver and the stand would also remove the sibilance.

FYI, I have Herbie’s gliders attached to the bottom of the stands. Sorry for not mentioning this earlier. They didn’t inhibit the sibilance.

I am always trying to improve the upper frequencies which sometime trouble me. 

I’m very sensitive to high frequencies/bright sound. 

In my case, there was fatigue, but it was due to the DAC I was using at the time, not the pavers. Once the DAC was removed from the system, the fatigue went away. It was not a subtle improvement!

Hope you're able to tame whatever is causing you trouble. 

OP: Congratulations! Glad to hear that the years-long mystery is solved. Yes, everything matters!

As per the photos in your virtual system, the coffee table has a very reflective surface - not only for light waves - but also for sound waves. Changing the height of the tweeter changes the angle of reflection off the coffee table - as any pool/billiard player would appreciate. By any chance, have you ever put a blanket on the coffee table to observe if it affects the SQ?

Also, adding a subwoofer (or two) will help to fill out the sound field. When I added LF, I was surprised how the HF became relatively more mellow - more integrated into the entire presentation. Enjoy the music!

From my experience, I think you are sensitive to Time and Phase coherence.

Bob 

@steakster I know what you mean about the coffee table. My son is familiar with working in a recording studio and was convinced that I should try Dirac Live. So, we tried it. My room measured reasonably flat, so I didn't bother to buy it.

At one point in the measuring process, we were getting a weird spike (or dip, I can't remember).  I had my laptop sitting on a coffee table with the screen up.  We closed the laptop and the abnormality went away. 

@steakster

Thanks.

Yes; I’ve tried covering the coffee table and I didn’t notice any sonic differences. Same story with draping blankets over the slate hearth/glass fireplace insert. I’ve experimented with this several times.

As you can see, I have very limited potential locations for subs.

@gdnrbob

Could you explain it in layman’s terms?