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Help ...... excesssssssive sssssssssssssssssssss

I would be eternally greatfull of any asssssissstance
given to remedy a condition that my ssssystem is ssspewing
out.

I guess it's called Sibillance.
well it ssssssucks.

I have tried inserting different preamps/amps/tubes as
well as 3 different cartridges (shelter 501 II, Grado Ref.
music makerIII )
no help.

different cables have been tried too.
I used the VPI jig for setting up the cartridge & used magnifing goggles to get it right on the money.
VTF set at 1.75gm
always playing with VTA & no help.

I am wondering if the tonearm or wiring could be cause?

here is my setup:
VPI TNT Base
Teres wood platter
JMW12.5 Arm
Music Maker III cartridge
VPI phono cables

Mapleshade copper ribbon I/C's
Decware Preamp
Decware Phonostage
First Watt F1
Mapleshade Speaker cables
Hornshoppe Horns

The music my system makes is wonderful EXCEPT for the
sibillance exageration, if I can get rid of this problem
I will be an extremely happy camper.
socoaste
txp1
148 posts
 
Have you noticed any change in sibilance across the LP (i.e., outer track compared to inner track and middle track)? Also, try increasing your tracking force to 2.0 grams. Finally, try a different alignment protractor.

Also, and my apologies if you already know this, ensure that you are aligning the cantilever and not the front of the cartridge - I'm not familiar with the VPI alignment rig, it may "force" you to align correctly.

Good luck and keep us posted on your results!

Terry
sardonyxx
64 posts
 
speakers closer together get warmer and have more attack. too close gives "third tweeter" ...also suggest corner tunes, echo tunes, wall tunes. wall behind speaker is reflective, so do you have a picture or something behind speakers? ...last thing ....maybe ear height/ time alignment of tweeter. ...have you heard other great systems lately? could be your spoiled.

Jeff
dougdeacon
3,338 posts
 
I assume this problem happens only on vinyl?

If so, phono input impedance too high is a possibility.
nsgarch's avatar
nsgarch
2,524 posts
 
I'd go with Doug's suggestion, EXCEPT that you've had the problem with (at least according to your description) so many different cartridges. It could be that something is being overdriven -- like too high a gain setting in your phono preamp.

OR, if it happens with all sources and not just vinyl, it could be due to an impedance mismatch between your preamp and your amp. I've certainly run across that one before! And this particular amp needs to be configured to match your speaker drivers. Both of these issues are mentioned in the notes published on the First Watt website:

"It is well suited to sensitive full-range drivers such as Lowther or Fostex, and allows easy use of parallel loading networks to tailor the driver response.

It has both balanced and single-ended inputs. The input impedance is nominally 80 Kohm, and the output impedance is 80 ohms."
justubes
47 posts
 

"SIBILANCE" The presence of strongly emphasized s, sh, ch, z, j sounds in speech.

Please keep us posted on the results. Learning experience me.

Good luck.
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