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Old 1st October 2012, 03:39 PM   #8071
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Please could you elaborate subjetive differences? I see the cap uses silver, possible the sound is more focused, tight & treble than with aluminium foil...
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Old 1st October 2012, 05:09 PM   #8072
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I also used those... not bad but I prefer FT-3 that has silver terminations
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Old 1st October 2012, 06:49 PM   #8073
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From what I remember FT-3 was a little bit more mellow sound, but I got more information and better highs from K-72. Maybe more accurate.
Also FT-3 was 100n and K-72 47n.
I got bigger improvement by changing these 2 resistors, something I didn' t expect to be really honest.
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Old 1st October 2012, 06:57 PM   #8074
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Next upgrade output caps Mundorf Silver Gold Oil.

To compare caps better share the same capacitance & voltage because I did a lot of comparisons and if are in the signal way can be modified the corner frecuency.

Last edited by merlin el mago; 1st October 2012 at 07:00 PM.
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Old 1st October 2012, 07:09 PM   #8075
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I use silver oil now. I am not going to get new caps now! Do not think that going to silver gold is worth the extra money.
I also wanted to lower corner frequency down a bit.
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Old 1st October 2012, 07:26 PM   #8076
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Quote:
Originally Posted by vgeorge View Post
Just changed the Rload and the 47K resistors to Zfoils.
I was not expecting this sound improvement!
Did you measure both resistors (the ones you had before and the ones you have got now) ?

Particularly the 47k... what where the real values and the new ones ?
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Old 1st October 2012, 07:47 PM   #8077
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The real value is 47k. I had 47,1k takman metal film and now 46,93. You think this difference might have an influence? Especially on definition.
Also Rload was 180R shinkoh.
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Old 1st October 2012, 08:00 PM   #8078
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Quote:
Originally Posted by vgeorge View Post
The real value is 47k. I had 47,1k takman metal film and now 46,93. You think this difference might have an influence? Especially on definition.
Also Rload was 180R shinkoh.
Yes.... lowering the 47k that much influences sound in the way you describe. (Slightly tighter bass with much more snap) (and an overall increase in output)

Remenber this is the "bass resistor".

If you rise the value above 47k you get a bump with an apex at 40Hz and will feel more bass and less snap. (and an overall decrease in the output)

if you have measured all your actual riaa parts, I can run a simulation for you.
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Old 1st October 2012, 08:05 PM   #8079
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I need to find my notes. If I do I will let you know. Maybe tomorrow. Thanks for the offer anyway!
I still think these resistors are special somehow.
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Old 1st October 2012, 08:09 PM   #8080
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The resistor on rload has a very significant effect, but the values of the riaa caps are even more important for the final result (in this case, independent from the resistor type).

Let me know your values and I will post a simulation just for fun
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