100W Ultimate Fidelity Amplifier

[AndrewT]

Pins 2 & 6 are the -IN pins.
Pin2 has R16 and R19 connected. These should be on very short traces to -IN.

Pin6 is unused.
Connect this channel to sit at half way between supplies.

I'm not sure about C3 & R7, maybe someone else can advise.
But C3 should maybe swapped with R7, so that the resistor is next to -IN.

 

[vargasmongo3435]

it is my favorite hobby of all
If it is so,make a pcb for this amplifier protection

yes thimios I was looking at the new schematic I'm also working with another PCB with DC and 3 sec delay this one is not completed I still checking for errors I will see if I can find time to make this new protect

Regards
Juan



http://www.diyaudio.com//www.pinterest.com/pin/create/extension/

 

[thimios]

yes thimios I was looking at the new schematic I'm also working with another PCB with DC and 3 sec delay this one is not completed I still checking for errors I will see if I can find time to make this new protect

Regards
Juan



http://www.diyaudio.com//www.pinterest.com/pin/create/extension/

Very nice work!

 

[still4given]

OK, I reworked it and changed the IC to TL071. Hopefully this one is better.

 

[apexaudio]

Do any of the transistors need a heatsink? Also, what is the ac voltage?

No need to use heatsink, AC is voltage from main transformer 2x30~50vac

 

[apexaudio]

OK, I reworked it and changed the IC to TL071. Hopefully this one is better.

Nice work, you can short SGND and GND

 

[kool lites]

The 0v reference for the opamp (D4 & D5 junction) is connected to the output as per the cct. I'm curious how it works.

Sent from my HUAWEI MT7-L09 using Tapatalk

 

[still4given]

I etched a pair. I'll try to get it populated and tested tomorrow.

 

[prasi]

it is my favorite hobby of all
If it is so,make a pcb for this amplifier protection

Here is a quick idea for layout of the protection PCB. It can be improved further based on suggestion of Mr. Mile or someone else. Meanwhile I will keep on making it pretty.
reg
prasi.

 

[vargasmongo3435]

Here is a quick idea for layout of the protection PCB. It can be improved further based on suggestion of Mr. Mile or someone else. Meanwhile I will keep on making it pretty.
reg
prasi.

is already pretty brother

Regards
Juan
http://www.diyaudio.com//www.pinterest.com/pin/create/extension/

 

[c08bm]

Mr prasi,


Sources must be connected and drains are switching gnd to spk ground, not drain to source.

 

[suryadi5417]

Need seggudtion psu...

 

[us1070]

Hi


I completed building the AX-14 amplifier and i am getting 4vdc output on AX14 what could be wrong with it

My voltage is +/-20vdc.

please tell what is wrong

 

[c08bm]

Apex stereo protect SSR

Any thoughts?

 

[thimios]

Hi


I completed building the AX-14 amplifier and i am getting 4vdc output on AX14 what could be wrong with it

My voltage is +/-20vdc.

please tell what is wrong

Is your input GND connected to star GND?

 

[thimios]

Any thoughts?

Very good looking symmetrical pcb!

 

[gaborbela]

Any thoughts?

Is these for two channel or I'm missing something...

 

[c08bm]

Yes, it's stereo.
Schematic from mister Mile http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-550.html#post4518802

Sprint layout file for own customizations attached



Oh, i see now i skipped 100K resistor from 5551 colector to +, sorry about that

 

[apexaudio]

Need seggudtion psu...

You can use this simple PSU

 

[apexaudio]

Yes, it's stereo.
Schematic from mister Mile http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-550.html#post4518802

Sprint layout file for own customizations attached



Oh, i see now i skipped 100K resistor from 5551 colector to +, sorry about that

Nice work, thank you