ISO "Simplest" possible amplifier

[dano12]

Originally posted by mosfets



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]

Originally posted by dano12
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.



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:

[mosfets]

Originally posted by dano12
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]

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]

Originally posted by dano12
FWIW, here is the corrected schematic that I ended up with:

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]

Originally posted by dano12

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 ...