class A amplifier

For a starter, increase C1 to 1000uF. 'T'll get the response down to about

Stop mucking about with stuff you don't understand and simply buy a modern hi-fi amp. Power amps are a real speciality (especially if you want them to be stable). It's no place for a beginner.

Do you understand stabilty criteria for example. What's a Bode plot ? etc

Graham (designer of stable pro-audio power amps since 1980)

Come now Graham, he didn't mention he wants to become an EE... why be so mean?

Olivier, why not try this one?

Michael

The passive pull-down resistor really limits the negative swing into the speaker. A constant-current sink would be better.

John

Late at night, by candle light, Eeyore penned this immortal opus:

Hey, he's having fun, and it's not like it would go into production or anything.

- YD.

Thanks ! Done. I will try to find high quality capacitors later ...

Ok, I will try it. Thanks.

. . .

--- Mean Mister Mustard sleeps in the park Shaves in the dark trying to save paper Sleeps in a hole in the road Saving up to buy some clothes Keeps a ten-bob note up his nose Such a mean old man Such a mean old man

His sister Pam works in a shop She never stops, she's a go-getter Takes him out to look at the queen Only place that he's ever been Always shouts out something obscene Such a dirty old man Such a dirty old man

Mean Mister Mustard Such a dirty dirty Mean Mister Mustard Such a dirty dirty Mean Mister Mustard

Mean Mister Mustard sleeps in the park Shaves in the dark trying to save paper Sleeps in a hole in the road Saving up to buy some clothes Keeps a ten-bob note up his nose Such a mean old man Such a mean old man

JF

Simple facts though and a BC546 is way too tiny to drive a 2N3055.

Essentially impossible since Hitachi stopped making them. I know a company in the UK than can provide equivalents though.

That's a truly horrible circuit too.

Graham

Just simple facts John.

Graham

The 'quality' of capaciors is an entire irrelevance with something so primitive. In fact it's almost a complete irrelevance completely unless you buy Asian junk.

I take it you've been 'Audiophooled' by reading magazines written by wholesale fraudsters. Audiophile was it ?

Graham (pro-audio designer since 1971)

primitive.

junk.

Graham, why are you so aggressive with me ? What is your problem ?

I have read it in Farnell catalog.

Olivier

I have studied Bode, Nyquist, Smith diagrams, Z, Laplace, Fourier transformations and their digital implementations, ...

So I think I can read technical answers to my "beginners" questions.

Oh, by the way, I must admit that I have miss the training "how to become arrogant".

Olivier

Thanks for the link Michael. I do not want to become EE ! At least good EEs should respect IEEE Code of Ethics (point 5).

;-)

Olivier

Oh that's good to know.

And to think, some people will sell amplifiers out of a van, with horrible distortion, that can even destroy your speakers...

Michael

--- You're a goddam liar.

You know very well that this is seb and that instead of just putting the guy down by puffing yourself up as an "expert" (implying that he's a virtual nonentity) you should be helping him understand where his deficiencies lie, like Larkin did.

But no, you always have to try to make yourself feel important by trying to make it seem like everyone is less important.

JF

primitive.

junk.

wholesale

Oh, don't mind Graham, he's still working up the courage to ask a girl out for drinks.

He does know his audio stuff though.

Welcome to Usenet.

Michael

primitive.

junk.