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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: differential phase splitter for the PP power ampilifier posted by RCA805 on September 15, 2009 at 22:11:55:
> > I am your fans. I need to spend more than ten years to understand your pre-amp cook book & your article on Sound Practice.And I am still keep reading to learn more < <
Great, keep on it!
> > I saw the circuit. Is it OK to use E288CC instead of 6H30? < <
THe 6H30 is better, because you can use a lot more current, and to directly drive output tubes, you need LOTS of current.
> It should be better than ECC88 < <
Maybe, but not much. 6H30 is a far better choice.
> BTW, why the circuit need to have current source loading instead of a resistor < <
It doesn't. All my circuits use resistive loading.
Are you confusing this with the CCS in the cathodes? That's NOT the loading, and is used because it sounds far better than using a resitor to a high negative voltage.
> > ( just like the text book differential amplififer). Is it enough gain of a signle stage drvier? In fact, I agree that only one stage should be better than two stage 6SN7 differential driver design < <
It is far better, by actual test. And it has enough gain.
Regards, Allen (Vacuum State)
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Follow Ups
- RE: differential phase splitter for the PP power ampilifier - Allen Wright 09/16/0905:25:46 09/16/09 (2)
- RE: differential phase splitter for the PP power ampilifier - RCA805 06:16:39 09/17/09 (1)
- It's called a CASCODE circuit. - Allen Wright 08:48:35 09/17/09 (0)
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