Aleph 30 the best choice of C1 C2 C3 on brian gt PCB - Page 3

Zen Mod · 29th March 2012, 10:22 PM

reference to sch in first post of this very thread.

R10 is , say, bleeder for (un-needed) input cap

boywonder · 29th March 2012, 10:37 PM

Quote:

Originally Posted by Zen Mod

reference to sch in first post of this very thread.

Doh! same schematic......

Thanks!

tonimxp · 30th March 2012, 07:30 AM

Quote:

Originally Posted by Zen Mod

reference to sch in first post of this very thread.

R10 is , say, bleeder for (un-needed) input cap

Hi!Zen ,thanks for your reply....a little question for your answare:
Are you sure that your considerations about c1 and r1 are correct also for the balance use of the amp?
If yes.. for you, why Mr.Pass had used this items ?
Thanks in advance.

Zen Mod · 30th March 2012, 08:58 AM

- yes ; see Babelfish J sch

- foolproof reasons

vivanco · 30th March 2012, 09:13 AM

[QUOTE=Zen Mod;2965917
- foolproof reasons[/QUOTE]

but from you advice, that is, remove C1 and R10, would not seem so foolproof

, why precisely, Mr. Pass, designed the circuit with these two components,,, is not it?

Zen Mod · 30th March 2012, 09:29 AM

because of possibility that his amp is going to buy some ignorant bstrd , eager to connect it to source with some DC on output ?

vivanco · 30th March 2012, 10:19 AM

Quote:

Originally Posted by Zen Mod

because of possibility that his amp is going to buy some ignorant bstrd , eager to connect it to source with some DC on output ?

perfect, now it is all clear, except for a small doubt that inquiries concerning R10, that is, if you Elima this resistance, you do not create an imbalance between the two half-waves of negative and positive, the audio signal?
I say this because I see that on the input signal positive there the resistor network formed by R1/R2/R3 and negative input is formed by the resistive network R9/R10.
thanks for your patience.

Zen Mod · 30th March 2012, 10:39 AM

do not worry

as I said - look Babelfish J sch

gadut · 11:10 AM

is it save to use 25V cap for Aleph30 power supply? I was going to purchase in PCX for nichicon super through 15.000uF 50V, but when I look at MUNDORF M-Lytic AG @25V with cheaper price, it's a huge improvement on cap bank capasitance size. need your advice.

- Nichicon ST -> 8 x 15.000uF 50V @$27 = $216 (total 120.000uF)
- Mundorf Ag -> 12 x 47.000uF 25V @$17 = $204 (total 564.000uF)

I find that papa is using 25V caps on his F5

Zen Mod · 30th March 2012, 11:16 AM

Quote:

Originally Posted by gadut

.......

I find that papa is using 25V caps on his F5

........

enough said .

xformer secondaries - 2x18Vac

29th March 2012, 10:22 PM	#21
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	reference to sch in first post of this very thread. R10 is , say, bleeder for (un-needed) input cap __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

30th March 2012, 08:58 AM	#24
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	- yes ; see Babelfish J sch - foolproof reasons __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

30th March 2012, 09:29 AM	#26
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	because of possibility that his amp is going to buy some ignorant bstrd , eager to connect it to source with some DC on output ? __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

30th March 2012, 10:39 AM	#28
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	do not worry as I said - look Babelfish J sch __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

30th March 2012, 11:03 AM	#29
gadut diyAudio Member Join Date: Dec 2008 Location: Jakarta	is it save to use 25V cap for Aleph30 power supply? I was going to purchase in PCX for nichicon super through 15.000uF 50V, but when I look at MUNDORF M-Lytic AG @25V with cheaper price, it's a huge improvement on cap bank capasitance size. need your advice. - Nichicon ST -> 8 x 15.000uF 50V @$27 = $216 (total 120.000uF) - Mundorf Ag -> 12 x 47.000uF 25V @$17 = $204 (total 564.000uF) I find that papa is using 25V caps on his F5 Last edited by gadut; 30th March 2012 at 11:10 AM.


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30th March 2012, 09:13 AM	#25
vivanco diyAudio Member Join Date: Jan 2011	[QUOTE=Zen Mod;2965917 - foolproof reasons[/QUOTE] but from you advice, that is, remove C1 and R10, would not seem so foolproof , why precisely, Mr. Pass, designed the circuit with these two components,,, is not it?

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