2. amps-preamps
  3. 1033262025

Sibilance how do I get rid of it?

Hello
I am currently experincing a problem with sibilance in my system,I must admit I know that unless I set up a overly dampened ( lack of Hi's ) set up, I'm almost always going to have some degree of siblance,I listen to mass produced commercial cd's so I know that this is atleast 40% of my problem , and my listening room 26'x14'x8' is relatively live,,lanolium floors..no dampening,,etc,,
But somewhere in the back of my mind I hear "you need to do careful system matching,
My system consisits of:
Cal Aria MkIII CDP
Conrad Johnson Pv10a Pre
& Conrad Johnson PV 14L Pre
Llano A100 SS Amplifier
Dynaudio Contour 1.3 2 way's "GLORIOUS Midrange and Presence"
JPS Labs superconductor FX Ic's
Tara labs Time and Space with TFA Return speaker cables
Transparent Power Plus Power cord &
MIT run of the mil powercord on the Llano power amp
I have no power conditioning whatsoever except some hospital grade junction boxes in which I have the CDP & Pre's hooked up-AMp straight to the wall.
Now I have experimented with various IC's and speaker cable Discovery,Cardas,Transparent..etc
I don't want to address this problem thru cable choice
I have changed the tubes in the CDP as well as the PreAmps
the Jps labs provides me with the transparency speed and extended Hi frequencies,,and resolution, but with noticable
sibilance could it be the Ac line conditioning or lack of it that is introducing the stridency and graininess to the sound? if so where can I start?
What brand power cables offfer the best shielding or get's the GRUNGE out? I've heard good things about coincident
I knwo that I should ( and AM in the process of)addressing the room itself carpet is in order and some accoustic paneling to kill the early reflections,should I do this first? then get the ac conditioning? has anyone had any experience with Marigo Powercords, shuyanta, Coincident etc.
Please offer me your suggestions
braab8

Showing 4 responses by cdc

cdc
1,891 posts
 
So if testing the system at midnight shows no reduction in sibilants from the daytime, then it is not the A/C power. Power conditioning would not be needed. From what is being said here.
cdc
1,891 posts
 
Dedicated circuits for cleaner power are a farce, in my opinion. Here is why I think so.
My living room light comes on with the timer tonight. The light bulb blows instantaneously while I'm listening to the stereo and my speakers go "phlam!" Not pop, even bigger than that.
My setup is a dedicated circuit on the opposite side of the circuit breaker box than the living room circuit. Furthermore I have a Tripp-Lite Isotel surge protector. The bulb blowing was probably too low to trip the Isotel.
Obviously all the circuits in the house are interconnected so I think this "dedicated circuit" is a farce. If somone can explain otherwise I am open to that.
The only reason I can se for dedicated circuits is so you don't get a voltage drop when the A/C, etc. comes on.
cdc
1,891 posts
 
Stehno I did not just "simply calling something a farce does not make it so". I gave a reason for my statement.

Further, just look at a circuit panel and you will see there is no electrical isolation between circuits. Or your neighbors refrigerator. The only benefit I can see is distance. Maybe 100 feet from the neighbor helps. But 12 inches between circuit? I doubt it. Any ideas on what an electrician would say?
Does a dedicated circuit reduce power contamination? Probably. But by how much? A couple of percent?
You seem to agree that there is a lot of sharing on the circuit panel. So how much can a dedicated circuit really isolate? Everything is connected together. I don't get it.
cdc
1,891 posts
 
Hi Stehno, if your power conditioning has helped your system, that is great. It simply does not in mine. Based on sound quality, a dedicated power circuit has no effect on my enjoyment of my system.
I do not know why you think the light bulb issue was "theoretical". It was not. It was never stated as theoretical.
Your comments got me to compare my dedicated circuit. Something I never did before. Case "A" was on the dedicated circuit. Case "B" was the system running through 20 feet of orange extension cord into the same circuit as my refrigerator. This is the noisiest circuit I have.
I played vocal, high sibliant, medium sibilant, low sibilant, acoustic, and high frequency energy songs. There was no difference between "A" and "B" in any of them. Neither to me or my girlfriend "Miss Golden Ears".

Your mileage may vary.
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