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
Post removed 
newbee
4,767 posts
 
i assume you have already do so, but speaker positioning heighth wise and direction in which they are pointed can be critical. i solved a similar problem by crossing the axis of the speakers in front of the listening position - it eliminated sideway reflections. vertical tilt can also have an effect. good luck.....
ezmeralda11
303 posts
 
"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?"

You've got the acoustics of a grade-school cafeteria --linoleum floors? To answer your question--YES. Go buy some very good acoustic treatments, foam will be fine, a nice Turkish rug for the floors would look great if you want some styling, otherwise just get any carpet in there. I would straight to Istanbul to get the best prices for the Turkish rugs. Get back to us once that's done.

"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?"

The room is probably so bad--I don't see how you could even hear if those are really your problems.

Speaker/room interaction is still the most important. Hit the sidewall first reflection points first, the center wall between the speakers, and then the wall behind the listener. Search previous threads on room acoustics and maybe get a good book on the subject "Audio Cyclopedia" or "The Master Handbook of Acoustics."

www.silentsource.com
www.echobusters.com
www.auralex.com
www.tubetraps.com (don't recommend these guys as much)
mbhcid
43 posts
 
My experience: switch ALL solid state rectifiers (CJ eqpt. & CD player - especially CD player) to Hexfred or UF diodes. If space and budget permit, change all PS (especially CD player) and cathode bypass caps to Black Gate or Cerafine type. If you can't do the mods yourself, find someone who can - it will save you hundreds if not thousands in component and cable upgrades. IMO -an easy and inexpensive ($300.00)solution is the Welborne Labs Gatekeeper or similar (Chang?) non-active power line filter/conditioner. Shunyata is nice (I own one in addition to the WL unit mentioned above)but expensive - the Welborne will get you 90% of the way there for a lot less $$.

Best of luck -
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