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Solid State Talk all about solid state amplification.

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Old 12th October 2003, 02:45 PM   #11
millwood is offline millwood  United States
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on the folded cascade input stage, I simulated one a while back (2n5401 /5551) and didn't see much improvement over the traditional differential pair so I gave up on it.

Yes, 2955/3055 are cheap, very cheap. I am not sure why you would need that many of them but if you drive low-impendence load, you just may.

I agree that no additional predriver is needed.

I thought it is a well thought out design. A little bit complicated for me but let us know how it works out for you. Good luck.
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Old 12th October 2003, 02:58 PM   #12
Jan Dupont is offline Jan Dupont  Denmark
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What I ment was that you needed an extra driver to be able to supply the current needed to drive the output transistors
Free Schematic and Service Manual downloads www.audio-circuit.dk, Spare time company (just for fun): www.dupont-audio.com
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Old 12th October 2003, 03:44 PM   #13
Hoffmeyer is offline Hoffmeyer  Denmark
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Hi Jan.

I know !!
Neither simulation, nor real-life tests indicates that the drivers will lag current, not even when driven hard.
Listeningtests might do so, though, but the project hasn't come that far yet.
Hoffmeyer ;0)
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