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Old 9th October 2011, 10:46 AM   #21
Zen Mod is offline Zen Mod  Serbia
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loading resistor , which is mutual for two mirrored halves , increases symmetry of output signal .

ya know - usual mumbo jumbo - just think about any out of phase garbage ....... ;

- what's happening when each half have own separate loading resistor , connected to gnd ;
- what's happening when that resistor is mutual (R5) ....

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Old 9th October 2011, 11:16 AM   #22
generg is offline generg  Germany
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thanks Zen Mod...

In which town are you just now? Together with AR2?
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Old 9th October 2011, 11:17 AM   #23
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Generg,
Here ya go. Found it looking into BA-3B possibilities before Nelson realeased it.

Distortion in JFET input stage circuits
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Old 9th October 2011, 11:20 AM   #24
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It seems this little trick of Nelson's does really well in reducing distortion. How does it compare to F5X. This will be my first non feedback amp, so I am stoked to hear a new sort of sound.
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Old 9th October 2011, 12:05 PM   #25
generg is offline generg  Germany
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Thx buzzforb, interesting and nearly understandable....

To the sound of BA-3

I dare to say.....In my system the sound of BA-3 reminds me of good passive solutions.....the same "coherency".
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Old 9th October 2011, 02:43 PM   #26
tinitus is offline tinitus  Europe
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who cares how it 'sounds'
either you want to build it, or you don't

its probably ok
anyway, its a matter what you need to drive your speakers

balanced looks sweet
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Old 9th October 2011, 03:27 PM   #27
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Quote:
Originally Posted by generg View Post
I would be interested in an explanation why it is useful that Papa connected the R5 in BBA-3 not to ground but together...?
Would you not want to be able to drive it with single-ended input?

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Old 9th October 2011, 03:28 PM   #28
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Nelson, doesn't this FE give comparable distortion numbers to SUSY.
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Old 9th October 2011, 04:09 PM   #29
generg is offline generg  Germany
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Quote:
Originally Posted by Nelson Pass View Post
Would you not want to be able to drive it with single-ended input?

there is a dawn in my brain.....UGS

there is a similarity to UGS 3a from Cheff if you put Q3 and Q4 to the outside, there is the source connection but no SUSY feedback, but with F5 there were some ideas......

thanks Mr. Nelson
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Last edited by generg; 9th October 2011 at 04:11 PM.
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Old 9th October 2011, 06:28 PM   #30
tinitus is offline tinitus  Europe
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Would you not want to be able to drive it with single-ended input?


it takes both SE and balanced signal ?

that would be real nice

but how ?
or will the balanced amp then 'just' be a stereo amp
well, thats kind of nice too
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