Simplistic NJFET RIAA - Page 1374

RCruz · 24th November 2014, 08:03 PM

Very true.

I built it with one, two and three k170 and it sounds much better with only one k369

orelli · 24th November 2014, 09:08 PM

Anyone use the 369 in the DCB1 buffer? Have a sense in that " stupid circuit"?

RCruz · 24th November 2014, 09:16 PM

Quote:

Originally Posted by orelli

Anyone use the 369 in the DCB1 buffer? Have a sense in that " stupid circuit"?

Cool question (besides the "stupid" quote)

orelli · 10:04 PM

"stupid circuit" are Nick's words, maybe John Curl disagree. Jokes apart, I think it sounds more dinamic,cause the more transconductance ( 40 mS).

Salas · 24th November 2014, 11:02 PM

No problem using it apart from the higher input capacitance so better make do with 10K pots.

*Don't remember the quote but I should have used stupid in the sense of stupidly simple.

stajo · 24th November 2014, 11:21 PM

I like stupid circuits

orelli · 24th November 2014, 11:22 PM

Quote:

Originally Posted by Salas

*Don't remember the quote but I should have used stupid in the sense of stupidly simple.

yes

RCruz · 25th November 2014, 07:52 PM

Quote:

Originally Posted by orelli

I think it sounds more dinamic,cause the more transconductance ( 40 mS).

Quote:

Originally Posted by Salas

No problem using it apart from the higher input capacitance so better make do with 10K pots.

Maybe we could use those also in the output buffer of the folded.... More dynamics you say.... I like the idea

Salas · 25th November 2014, 11:56 PM

They are more useful in very low input signal duty but if having spares its alright. Got to keep about same voltage headroom across the output stage buffer as was with the K170s. If higher idss, as usual with most 369BL, the R in the rail's last RC must become smaller. Also, by using the oscope, make sure it does not react on output interconnects due to the higher Yfs.

RCruz · 26th November 2014, 08:55 AM

Good news these are.... talking about flexibility ... Simplistic Flexibilistic

24th November 2014, 08:03 PM	#13731
RCruz nhinstruments diyAudio Member Join Date: Sep 2006 Location: Wallis	Very true. I built it with one, two and three k170 and it sounds much better with only one k369 __________________ Ricardo

24th November 2014, 09:58 PM	#13734
orelli diyAudio Member Join Date: Aug 2008 Location: Correggio, Italia	"stupid circuit" are Nick's words, maybe John Curl disagree. Jokes apart, I think it sounds more dinamic,cause the more transconductance ( 40 mS). Last edited by orelli; 24th November 2014 at 10:04 PM.

26th November 2014, 08:55 AM	#13740
RCruz nhinstruments diyAudio Member Join Date: Sep 2006 Location: Wallis	Good news these are.... talking about flexibility ... Simplistic Flexibilistic __________________ Ricardo

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24th November 2014, 09:08 PM	#13732
orelli diyAudio Member Join Date: Aug 2008 Location: Correggio, Italia	Anyone use the 369 in the DCB1 buffer? Have a sense in that " stupid circuit"?

24th November 2014, 11:02 PM	#13735
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	No problem using it apart from the higher input capacitance so better make do with 10K pots. *Don't remember the quote but I should have used stupid in the sense of stupidly simple.

24th November 2014, 11:21 PM	#13736
stajo diyAudio Member Join Date: Jun 2011 Location: Stockholm	I like stupid circuits

25th November 2014, 11:56 PM	#13739
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	They are more useful in very low input signal duty but if having spares its alright. Got to keep about same voltage headroom across the output stage buffer as was with the K170s. If higher idss, as usual with most 369BL, the R in the rail's last RC must become smaller. Also, by using the oscope, make sure it does not react on output interconnects due to the higher Yfs.