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5687 fully balanced line stage
5687 fully balanced line stage
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Old 23rd July 2009, 11:29 AM   #11
sajti is offline sajti  Hungary
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Join Date: Apr 2003
Location: Százhalombatta, Hungary
The advantages of the second solution:
- higher load impedance for the cathode follower, makes less distortion
- no DC current, and less AC current flow into the ground point

But maybe I'm wrong.

Sajti
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Old 23rd July 2009, 02:11 PM   #12
jmbee is offline jmbee  France
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Join Date: Sep 2008
you are not wrong but distorsion mainly comes from the first stage with medium high
impédance loads.
If each stage mainly generates second harmonic distorsion, say first satge DH1, second stages DH2 , total distorsion is ( DH1 - DH2) because phase turns.

crd
jmb
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Old 24th July 2009, 12:54 PM   #13
hollow_man is offline hollow_man  Europe
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Join Date: Nov 2004
Location: Athens
Hi Cedus,
you might want to stay clear form tail current sources, as me experiments have shown, see
http://www.diyaudio.com/forums/showt...hreadid=135356
I think Satji has got the idea.
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Old 24th July 2009, 01:02 PM   #14
sajti is offline sajti  Hungary
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Join Date: Apr 2003
Location: Százhalombatta, Hungary
I want to avoid to use any ccs. The psu will be unregulated.

Sajti
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Old 24th July 2009, 01:28 PM   #15
hollow_man is offline hollow_man  Europe
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...and it will sound better!
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