Re: Re: Re: 250TI Jubilee spikes
Quote:
Originally posted by CLASS A
I had a shock too when I took out the cross over to find very cheap capacitors used. They can be improved dramatically as I have proven when I changed high grade capacitors into my kef R105/3. I will keep you informed which capacitors used and end result of it all.
I must admit that the sound from the jubilees are great in stadard form.
What front end and ampification are you using to drive the jubilees?. I m using Sony SCD-1, Plinius M8 pre and Plinius SA250IV power ( 250w x2 in class A ).
Cheers
My Electronic :
Linn Karik/Numerik - Cd
Audio Research SP16 - Pre
Crown Studio Reference 2 - Power
Re: Oh oh,,, you've opened Pandoras' box
"I've found that for my sonic purposes ( & with the electrolytics I've used ) that I need to use at least 50% of the final value from higher quality type caps when blending sounds into the base caps'( electrolytic ) signature sound, This ratio ( for me ) is the amount necessary to submerge the sonic signature of the electrolytic. IMHO, at a 50% ratio , there's just no economic advantage in maintaining any electrolytic caps within the series portion of the circuit ."
"Start with replacing the caps found in the four circuits that are in series with the drivers. If the cost of film & foil types is prohibitive then buy some decent metallized polypropylene types ( Solen 250 volt types can work ). You'll want to do as Giskard has suggested and "Bypass" these Solens with small value Polypropylene film & foil types . If using Solens I prefer to multiply Greg Timbers suggested "Bypass Formulas" by a factor of 10. That means instead of .01uf I'd use a .1uf film & foil Polypropylene. I also bypass all bypass caps with Polystyrenes. As Giskard has stated numerous times - these put the "air" back into the soundstage. This air can be squeezed out by all caps. I use polystyrenes to "taste" - meaning that they can have so much "air" that they can be used to effectively "blunt" the knife-like edge that a lot of cheaper metallized polypropylene carry as a sonic signature . Effective values end up being equal to or greater than the .1uf mentioned for film & foil Polypropylene bypass caps ."
Good points Earl! :) Interesting that you've found the order of magnitude necessary to blunt the metallized polypropylenes! I'll pass that along. :yes: