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In the Forum: Audio Discussions
In the Thread: How to get a LOT of SET power.
Post Subject: DemagogyPosted by N-set on: 5/23/2011
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The 100W+ SE is pretty much uncharted teritory, not to mention Bass SE. Who can speak about the Sound?
Only that who tries.

Paul, the diodes in Chimera are for biasing purpose, but I agree, here there is no cathode feedback not ot loose power,
the whole thing can run away and explode. Will try to think of that.

 Romy the Cat wrote:

About the rest of the amp. I am not wild about it as it has a fixed design. Everything in this amp is moderated by one parameter: the current of the driver tube. What would happen if you do not nned 160W but would like to stray with 80W. Even if you redo your huge and expensive 100H plate choke then you will be force to lose power on the driver tube. You do not want to weaken the driver but only weaken the output tube.


What did you expect from DC coupling? How much elasticity you'd expect from
2 stage minimalistic DC coupled amp? Either minimalism or elasticity.
But still there is some elasticity: the selectable UL. Also, as I said,
I'm  thinking how to adjust the bias of driver and output individually in some limits.
BTW, very much to the oposite with the control-everything is controled by the bias of the input tube.

 Romy the Cat wrote:

I am not getting the idea about driving the filament from OPT transformer, can you to elaborate on it purpose and method? 


This is Dave Slagle's idea: the filament current offsets the DC bias of the core caused by the plate current.
This allows for  a smaller gap and less turns on a given core to get the ind.

Filters--I feel I did not learn anything. If anybody wants to teach me, or better yet design the filter,
I'd apreciate :-)

Cheers,
N-set

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