Aleph 30 the best choice of C1 C2 C3 on brian gt PCB - Page 2 - diyAudio
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Old 28th March 2012, 09:04 PM   #11
Zen Mod is offline Zen Mod  Serbia
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Papa use Silmic

bypass them with 10-100nF MKC

make a search for Babelfish J and compare - which caps you don't need
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Old 28th March 2012, 09:14 PM   #12
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i have only tryed FE on aleph. never tryed FC.
or was it the other way around?. hehe. i can't remember at the moment
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Old 28th March 2012, 11:34 PM   #13
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does the type of the bypass cap matter? ie. mkc, mkp, mkt.
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Old 29th March 2012, 05:35 AM   #14
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Ha,
I guess my boards are dating themselves.

Bill
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Old 29th March 2012, 06:58 AM   #15
vivanco is offline vivanco  Italy
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I read with interest your speeches, but none of them has basically gutted the problems presented by Toni, in fact, if I understand the its question, its necessity is to understand how to develop the branch electronically negative input audio signal, on which this is a 220uF electrolytic capacitor, which at first glance, for those not expert in the balanced circuitry Mr. Pass, creates great uncertainty,,,, if I remember correctly, somewhere I read that Mr. Pass is not convinced of the use, the signal path, the electrolytic capacitors;
please, can anyone explain to me and consequently at friend Toni, the task he must accomplish the capacitor and its resistance to it in parallel (which should form a band pass filter) in series with the negative branch of the signal ,,, many thanks and greetings
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Old 29th March 2012, 08:36 PM   #16
tonimxp is offline tonimxp  Italy
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Hi!There ..Thanks for your reply my friend Vivanco!
I'm agree with you,i can't think that the electolitic cap is the best chose for c1 (input signal cap),there must be some secret mysterious, who wants to play the treasure hunt?
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Old 29th March 2012, 08:51 PM   #17
Zen Mod is offline Zen Mod  Serbia
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short C1 you don't need it

pull out R10 , you don't need it

for C3 use decent cap

for C2 use Silmic , bypass it with 100nF MKC (polycarbonat)
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Old 29th March 2012, 09:30 PM   #18
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Quote:
Originally Posted by Zen Mod View Post
short C1 you don't need it

pull out R10 , you don't need it

for C3 use decent cap

for C2 use Silmic , bypass it with 100nF MKC (polycarbonat)
Same for the Mini-A using the BrainGT board?
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Old 29th March 2012, 09:48 PM   #19
Zen Mod is offline Zen Mod  Serbia
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yes

look at position if nomenclature is different
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Old 29th March 2012, 10:06 PM   #20
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Quote:
Originally Posted by Zen Mod View Post
yes

look at position if nomenclature is different
The OP is also using the BrainGT board.......so is R10 in your post above in reference to Grollins schematic or the Brain GT schematic?

What's the purpose of R10?

Here is the BrainGT board schemo:
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File Type: pdf mini aleph schematic.pdf (27.2 KB, 197 views)
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