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Old 18th February 2008, 12:32 PM   #2021
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Location: Canary Islands
Hello Andrzej

what does sound with the Nichicon?
Do you hear differences?
Regards
Jose
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Old 18th February 2008, 01:37 PM   #2022
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Quote:
Originally posted by José Humberto
...what does sound with the Nichicon?
Do you hear differences?

Hi Jose,

Differences are difficult to explain.

Before:
Ambient scene was larger, easier to observe, sound was sharper and more aggressive in the treble, especially at >50C, like conventional capacitors added more grain at higher temperatures. Altogether – I was tired after one hour of listening.

Now:
C1/C2 = 220uF/50V “Bi-polarized Nichicon MUSE ES (green)” plus added in parallel 47nF/100V “VISHAY MKP”
C3/C4 = 220uF/50V “Nichicon MUSE KZ”

There is more air but at the same time ambient scene is not so large as before, I do not understand why. Now the sound is clearer. Less grain. Piano sounds much better, almost perfect. Altogether – listening is more comfortable.

Someday I hope to try 100uF “Black Gate N”, maybe with added in parallel 0.47uF “Black Gate NX”.

Best Regards,
a.
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Old 18th February 2008, 03:37 PM   #2023
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Quote:
Someday I hope to try 100uF “Black Gate N”, maybe with added in parallel 0.47uF “Black Gate NX”.
I´m glad the change is good.
¡Black Gate! Uff
I have done the sum 223,2$
I´m thinking in Mundorf. Please don´t add it. Hehe.
Best Regards
Jose
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Old 18th February 2008, 03:40 PM   #2024
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Nichicons need to "run-in" for quite a few hours - at least 24 to 48, before they start to sound good - MKPs taken longer.
If you are patient with them, you should get a very clean sound overall with a heavier, more solid base.
Might find the 47nF may (note: MAY) benefit from a 0.1ohm in series.
__________________
... jh
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Old 18th February 2008, 06:46 PM   #2025
culture is offline culture  Netherlands
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Hi

I'm also thinking about upgrading c1/c2 and replacing my panasonic fc with blackgate fk or something similar. I'm actually quite curious what kind of caps other people are using.

cheers,

c.
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Old 18th February 2008, 07:10 PM   #2026
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I'm actually using Elna Cerafines... they were my first choice so i'm not able to make comparisons among other caps. All i can say is F4 sounds just marvelous to my ears
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Old 18th February 2008, 08:17 PM   #2027
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Quote:
Originally posted by jameshillj
Nichicons need to "run-in" for quite a few hours - at least 24 to 48, before they start to sound good - MKPs taken longer.
If you are patient with them, you should get a very clean sound overall with a heavier, more solid base.
Might find the 47nF may (note: MAY) benefit from a 0.1ohm in series.

JH,
Thank you very much for interesting advices.
Today I listened with pleasure a cappella choir singing ancient music. I discovered delicate natural hisses. And a choir breathe in at Vangelis 1492. Very nice impressions. When capacitors mature maybe it will start to disturb me someday, or not, I will know. My wrong hearing depends on if I am tired, a little bit drunk, or just have a cold...
Best Regards,
a
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Old 21st February 2008, 05:02 AM   #2028
ahegyes is offline ahegyes  Romania
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Helloo there!
I have built a pair of F4's and they work just fine, but i have a little problem with one of the chanels. It has a very little buzz. It is so little that it is bearly hearable with the ear next to the speaker - but it is there and it is annoying. The othere 3 chanels are dead quiet.
Anyoane any ideea of what shoud be the problem????

PS: I do not have ground loops and all of the other chanels work in the same conditions.
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Old 21st February 2008, 05:35 AM   #2029
ahegyes is offline ahegyes  Romania
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Here is a drawing of the 2 f4's and the buzz...
Attached Images
File Type: jpg buzz.jpg (14.1 KB, 1213 views)
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Old 21st February 2008, 06:17 AM   #2030
cviller is offline cviller  Denmark
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Can you take a picture of the amp? Perhaps the mains is running close to your input or you have a problem with grounding.
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