100W Ultimate Fidelity Amplifier

[jorgovanko]

And the first version of the PCB...

 

[r_jik45]

Nice compact layout.
Just a small question: what would you connect GND IN to since you already have IN--?

 

[jorgovanko]

IN-- is signal GND. GND IN is Power GND. They are connected via 10R.

 

[r_jik45]

Ok, thanks for the explanation.

 

[prasi]

And the first version of the PCB...

Nice layout jorgovanko, congratulations.
I wanted to see if the same size of PCB can be used for all THT components. Yes, but with a bit of squeezing of components and tight clearances, and a double sided pcb.
Two options (1st image is all inline and second one is side FET layout).

regards
prasi

 

[jorgovanko]

I think i will stay on this layout becouse I can order 2in1 PCB (100x100mm is default layout dimension for minimal price) from JLCPCB. Using TH components is I think impossible to stay in this dimensions. I have new version where Silver Mica (pF) can be used in critical possition in feedback and Mica/MKP 100n for bypass feedback capacitor. Also, SMD 1206 COG/NPO still can be used. I will post layout later...

Cheers,

 

[clpk]

Hello, can I use this protection for any amlifier? connecting to the emitter of the transistor?

 

[kandimba]

Hello, can I use this protection for any amlifier? connecting to the emitter of the transistor?

Hi! Yes, but you need pro detection to conect in the same pro PCB, in order to get total protection from this PCB.

Regards

 

[thimios]

Hello, can I use this protection for any amlifier? connecting to the emitter of the transistor?

Hi, can you post the pcb, black&white for home etching?

 

[apexaudio]

Hello, can I use this protection for any amlifier? connecting to the emitter of the transistor?

You must add this circuit if you want connecting PRO pin to the emitter of the transistor.

 

[clpk]

You must add this circuit if you want connecting PRO pin to the emitter of the transistor.

Okay, i see, thank you sir. Mile.

 

[clpk]

Thimios, i also don’t have in black&white, just this drawing, I need to put it as protection for the AX20.

 

[clpk]

I found this protection from Willy, in the forum, I will use it on the AX20 3 pairs PCB Olafk.

 

[pallab]

Remove balance pot and add jumpers...

sir ,How can I increase bass on TB3 tone control??mid and high is ok but need more bass from TB3.

 

[sumeshak]

Nice design and visualization..
Please suggest some links too learn 3d visualization with Eagle?
Regards,
Sumesh

And the first version of the PCB...

Nice layout jorgovanko, congratulations.
I wanted to see if the same size of PCB can be used for all THT components. Yes, but with a bit of squeezing of components and tight clearances, and a double sided pcb.
Two options (1st image is all inline and second one is side FET layout).

regards
prasi

 

[Ciprian1984]

Can someone help me with APEX A33 gerber files because i search more then 1 hour and i didnt find it
Thank you!

 

[vasillis]

Here you are.

 

[Ciprian1984]

Thank you Vasillis !

 

[surjitsharmaph]

Please someone provide me the pdf file of the ax11 that i have upload

 

[karachay]

This is PSU with short-circuit protect...

Hi mr.Mile

i have a problem with f100. marked cap keep blowin. and 2x1n4007 some times broke some times get short. i use 2x24v fan parallel in the amp and feed from fan connector.

any idea why this happening? if i change 2x1n4007with bigger one and cap voltage with 100v can fix problem? or that 2 fan having problem inside?