Output solution for tubes sound

[Stee]

Hi
my amplifier is SRPP 6SN7 with bipolar's bridge
this bridge don't need balanced signal
because half bridge is passive
and works better then class A:
bridge use the same working points
of the complementary devices

http://www.esafono.it/ISY.ZIP

[GK]

Loooooooonie alert!

[Ty_Bower]

Yes, I see it now. Clearly the hybrid bridge is far superior to class A, because the two little dots are on the same end of the blue and red arrows. Your diagram makes it very obvious. I don't know how I could have missed it before.

[Arnulf]

Stee, did they kick you out from the Solid State subforum ?

There's a 4.7K resistor missing in series with the load ...

[Stee]

see update design
(all in one board)
8 capacitors are 2200 uF - one of each collector
43K are resistors glued on dissipator

signal is from tube SRPP (6SN7)
this BIG buffer don't have voltage gain
and have Zero-Feedback

[Richard Ellis]

I don't see a single grid in any of that bazillion stage monstrosity......with a bunch of those arrow thingies.
Is that that Solid State Wonder Mirror schematic......seriously, the right half is mirrored....makes for difficulty reading anything in that maze of stages. Yuk!
SS designers Credo "If it ain't right, build another stage"

__________________________________________________ _______Rick...

[kevinkr]

I'm more than a little surprised at the tone of some of the responses here - the OP was NOT trolling, looking at the archive he graciously posted makes that very, very clear. You guys ought to be ashamed of yourselves..

You may not agree with the philosophy described or the resulting implementation but the OP did not deserve the response he received. Some allowance should have been made for the fact that his native tongue is not English. Some of us have a hard enough time being understood, and we all speak basically the same version of the language..

The 6SN7 SRPP he mentions is not shown in the archive, and the point behind all of this perhaps is a tube (emulator??) based VAS driving a distortion canceling approximately unity gain buffer.

Most likely this should have been posted in the solid state amplifier forum. Perhaps a mod could move it..

[SY]

Agree 100%, Kevin, and I'll do just that.

[GK]

Originally Posted by kevinkr

Most likely this should have been posted in the solid state amplifier forum. Perhaps a mod could move it..

Well it was posted in the Solid State forum, by Stee, right here:

Quasi-Balanced Method

Language difficulties aside, Stee has been doing this for a while now; that is starting threads presenting weird circuit schematics or conceptual ideas that are obscure at best or just plain semiconductor smokers at worst.
When technical objections are inevitably raised, regardless of manner, they are just ignored and the spiel in the opening post is repeated.

I guess just how seriously this is taken in the end is down to the individual.

In the case presented here, I think his theory would make a lot more sense if he was actually providing the "NC" input with an inverted version of the audio input signal!

[Ultima Thule]

Interesting!

Beyond my imagination...

The output impedance is doubled, but we have equal currents going in both positive and negative voltage supply rails, I think the design do have some limited merits!