Power Conditioners to reduce Sibilance

I would assume that your room acoustics have something to do with it. As you upgrade to more revealing equipment, sometimes the room will be more noticeable.

In my system, the power conditioner smoothed the sound out just a bit, but I don't think it will cure anything.

Rob

Thanks for all the replys. My room is actually an acoustic nightmare and am looking to add some canvas prints to tame things down a little. I have fiddled with toe-in but not to the point where they cross in front of the sweet spot so I shall also give that I try. I was actually looking to purchase a RGPG 400 but I will hold off to see if I can alleviate the problem by focusing on the room. Thanks again.

I have never seen (or heard of) a power conditioner that had an effect on silibance. If it did, what else in the same range of frequencies would it affect?
Work on the speakers and the room - and get a power conditioner if you have an AC problem.

Often times a tizziness, digital-like hash, or grainy highs can often be interpreted as an intollerable 'treble brightness'.

This can be the result of poorly designed ics and speaker cables, usually those that induce time-smear. Some silver cables will introduce a certain tizziness.

But unconditioned lines can and will also introduce its own sonic harm in much the same way along with the negative sibilance you mentioned.

If none of your components are properly conditioned and you're using a digital source, then there is an excellent chance that the bi-directional digital noise that is generated is also infiltrating your other components. For that you need to make certain that any line conditioner you purchase is also bi-directional to keep the noise from going back into the AC line back to the service panel and then into your other components.

So if you're concerned about certain aspects, don't assume that fixing one fixes all.

Not all line conditioners will reduce or eliminate negative sibilance or prevent digital noise from going back into the line. For this and other benefits, I would recommend the Foundation Research LC-1 and LC-2 passive and dedicated in-line power conditioners that come with their own built-in power cable. New they sell for $795 (for front end source components) and $995 for the amp. Used these should be right around your budget.

Among other benefits, the Foundation Research line conditioners should eliminate all negative sibilance induced by noisy AC. But keep in mind there are certainly negative induces occurences of sibilence embedded in the recording itself via the microphones or others. There is no line conditioner that can remove this type of negative sibilance.

With regard to ics and speaker cables and a grainy digital hash-like sound resulting from a time smear, some to many cables have this unwanted characteristic.

If per chance you are also experiencing these effects, then you might want to consider the Audience Au24, Paul Speltz' Anti-cables and Anti-ics, or the Audio Tekne lines of ics and speaker cables.

-IMO

The reason why I had originally thought of power conditioners as a solution was due to the fact that I entered 'sibilance' as a audiogon search item. A number of threads alluded to poor AC as a generator of this problem and I started this to read more into the topic. Thanks.