F6 Amplifier

[Zen Mod]

after few tricks ( I wrote about ) , one can coax mains wires ; old VGA cable good for skinning and some heatshrink .....

so - leave xformer where is

though , Generg's remarks about small xformers are valid - some quick mock-up for shielding will tell what's needed

 

[Tea-Bag]

I had trouble with the unit unbuffered, the source was 150R driving them too, the speakers seem to motorboat. (not hum).
Putting in the 1k/47k helped a lot, but it performed best sonically with the Toshiba JFETs in place. It was hard to go agianst the masters recipe.

 

[elfischiso]

My problem is solved!
It was a simple, stupid failure. I connected my pre's signal to F6's ground.
Stupid me!
Now everything seems to be fine. There is a lot of bass and enough gain for my speakers!

Thanks for your help! I'm going to listen to music now!

 

[generg]

My problem is solved!
It was a simple, stupid failure. I connected my pre's signal to F6's ground.
Stupid me!
Now everything seems to be fine. There is a lot of bass and enough gain for my speakers!

Thanks for your help! I'm going to listen to music now!

Very nice!

That is the way I did often my distortion measurement.....

 

[generg]

Sorry, of course the M2 xformer is much more susceptible for hum, because it amplifies the voltage 5x.....!
The Jensen does not do this, so the position might not so important to care for....!

 

[kiven chen]

ZM has been nagging me for information on the F6. I have a very nice
sounding prototype, but the design and the article that accompanies it
have some details remaining.

However, I can afford to put out this teaser:

This is my F6, There is something wrong with it?
thank you for you help.

 

[Zen Mod]

it's certainly something wrong with it , when we even can't see it ......

 

[Zen Mod]

what means having connections in high instances ......

this time , some wakoo friend in Vaterland ....... my goldene Ohr Freund Generg sent me geschenk

ZM not worthy , for oumptheenth time

 

[generg]

Hope you have fun.....!

Tea-bag and crt have designer qualities, ....even woman would buy these boards!

 

[buzzforb]

An official board. Where do the SiTs go.

 

[generg]

???

 

[Zen Mod]

Hope you have fun.....!

Tea-bag and crt have designer qualities, ....even woman would buy these boards!

An official board. Where do the SiTs go.

SICs maybe , nope SITs ; they'll go here :

An externally hosted image should be here but it was not working when we last tested it.

 

[buzzforb]

Thats not any SiT i have seen
Will tl431 bias schema from ealier work for SiT2 mockery. No way i understand all that Babel

 

[CeeVee]

That's not teaser ZM...that's torture....u go where we can't follow.

 

[buzzforb]

Its all bias.

 

[generg]

don´t worry I cloned the board already......

there was ZM written in the corner........

 

[Tea-Bag]

SICs maybe , nope SITs ; they'll go here :

Will R085 buggers work here?
When will the Turbo be released?

 

[buzzforb]

Of course. Question is amount of difference between R100.

 

[Tea-Bag]

looks like a negative bias supply to me. R085, may not fit like glove - but optional.

 

[buzzforb]

Negative or more negative?