ISO "Simplest" possible amplifier

[dano12]

That is the coolest piece of crXp I've ever seen on DIY! I want one just like it STAT.

I think I'll call it the "Pinnacle" or some other superlative and start selling them on ebay for 1000 bucks.

 

[Salas]

As far as I'm concerned, mission accomplished with this one. I fashioned a hillbilly heatsink for the power resistor, stuck a single transistor pre-amp in front of it, stuck it in a computer CDROM cage and called it a day.

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

It makes a nice little guitar amp, drives an 8 ohm cab very well.

I think now I'll move on to some of the better suggestions posted here.

Thanks again for the pointers!

I like it aesthetically too. Very MECHANO! Must be sounding direct and ''warm''?

 

[dano12]

FWIW, here is the corrected schematic that I ended up with:

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

 

[mosfets]

FWIW, here is the corrected schematic that I ended up with:

I think Dano is an artist.

I like it aesthetically too. Very MECHANO! Must be sounding direct and ''warm''?

Perhaps like a movie prop? ...good times.

 

[mosfets]

Beavis

Just checked out the web site... now it all makes sense.

Cool.

 

[djk]

"FWIW, here is the corrected schematic that I ended up with:"

FWIW, it can't put out anywhere near the power claimed.

 

[Bonsai]

it does look cool, i have to say.



Check out C3 though - its shorted out. I think you meant to put it across th e supply rails.

 

[SQLGuy]

FWIW, here is the corrected schematic that I ended up with:

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

Out of curiosity, what's the purpose of the 470uF cap with both ends connected to ground?


EDIT: Ooops, dupe of Bonsai's post.

 

[pacificblue]

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

Is 220 µF for C2 a typo? That would give f-3dB at 90 Hz with an 8 Ohm load = no bass.

 

[PMA]

An 50 ohm output impedance ...

 

[dusr_123]

tenetA

Hi,

I see you also play with this simplest curcuit. Many people are laughing when they see this amp, but I built in this way the best sounding amp ever. I made about 20 amps ( tube SE PP, tube OTL, MOSFET SE PP, hybrid ) but no one sound so good like this. But there is alway a big BUT - it was powered from batery and the usable output was 0,5 - 1 W ( 0,4 % THD ).

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

Two car bateries in livingroom is a problem ...

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

RD

 

[dano12]

Yep, the C2 with ground on both sides was not a feature, rather a typo.

I corrected the schematic.

 

[pacificblue]

Re: tenetA

Two car bateries in livingroom is a problem ...

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

Acid-resistant trays below them would be an advantage in case they get leaky.