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In Reply to: RE: parallel cathode bias resistors: "ghosting" effect posted by dave slagle on March 31, 2012 at 13:05:23
Dave,
Hi. The Rk resistors are made to be identical, so as not to ghost.
Multiple bypass film caps are purposely selected to be non-identical, and serve a different function.
Each value of film Rk bypass cap will play a different part of the audio spectrum, and a linear-sounding "overall combination" of multiple bypass film cap values gets to be selected and determined by ear.
A single Rk film cap will "tune" to the single cap's value. Film Rk caps are not linear when playing music, despite rudimentary sine wave bench testing.
Cheers,
Jeff Medwin
Follow Ups:
Multiple bypass film caps are purposely selected to be non-identical, and serve a different function.
could it be that function is to 'ghost'?
dave
.
in fact, number of resistors should be equal to a prime number between 3 and 11.
give it a try and trust your ears.
This is why I keep coming back to Asylum everytime I escape...
-3db
But does this apply in a zero gravity situation, curious minds really wanna know !!
What 'cha running for a home hi fi ??
Jeff
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