100W Ultimate Fidelity Amplifier

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@wiljj78
Can you post Sprint file?
Tnx. :)

AX11:
 

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Miles, after listening for few days I like the mids of AX9 better then NX-14 on my PC monitor speaker.

Yesterday I changed opamp to LME49860 AX9 oscillated. I changed 47pF to 100pF amp is stable again, tomorrow I'll check with 56pF, 68pF and 82pF.
Apex A9 didn't oscillated when using LME49860.

I'll like to increase voltage for LME49860 to 22V. Is there need to change the value of 10K resistor.

Regards
Sonal Kunal
 

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Miles, after listening for few days I like the mids of AX9 better then NX-14 on my PC monitor speaker.

Yesterday I changed opamp to LME49860 AX9 oscillated. I changed 47pF to 100pF amp is stable again, tomorrow I'll check with 56pF, 68pF and 82pF.
Apex A9 didn't oscillated when using LME49860.

I'll like to increase voltage for LME49860 to 22V. Is there need to change the value of 10K resistor.

Regards
Sonal Kunal

Use 15k instead 10k with 22V zeners.
Regards
 
Hi,

Here's my AX14TP, A big thanks goes to Juan for all the help without which I wouldn't have been able to do it !!

He sent me all the files (Gerbers) required for me to get the PCB done and also all the emails with pics and such, He's really great ! Unlike others who refuse to help when I request them,He was more than happy to help.

Anyways here's the pics of the PCB ( 70 Microns copper and Glass epoxy) :

P1200825.JPG


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Now the building phenomena begins !! Will post here if I need any help.

Regards.
Post the pdf here to help other guys as Juan help you:rolleyes::rolleyes:
 
A33 finished

I'm ready with my new A33 amplifier assembled ,soft start,DC protection, and factory PCB .
Sound it's very,very natural I like how it's sound :D . Thanks to Mr.Mile S for every amplifier posted on this forum .
Regards,Alex
 

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Hi Juan,

I appreciate that but I have already built the AX-14 just about every way. What I am curious about is if PDFs can be created from Gerbers. Though I greatly prefer building with manufactured boards, sometimes it is fun to just quickly etch some boards. Being able to produce PDFs for transfer would be nice.
 
sprint lay6 program can import gerber files,and it should create pdf out of them. i do pdf using "Cute pdf" program,it simulates printer but it actually creates pdf document instead printed copy. i never tried to do pdf out of gerber files but it should work: sprint lay6 imports gerber files - using Cute-pdf exports / "prints" pdf.
 
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Hi Juan,

I appreciate that but I have already built the AX-14 just about every way. What I am curious about is if PDFs can be created from Gerbers. Though I greatly prefer building with manufactured boards, sometimes it is fun to just quickly etch some boards. Being able to produce PDFs for transfer would be nice.

sprint lay6 program can import gerber files,and it should create pdf out of them. i do pdf using "Cute pdf" program,it simulates printer but it actually creates pdf document instead printed copy. i never tried to do pdf out of gerber files but it should work: sprint lay6 imports gerber files - using Cute-pdf exports / "prints" pdf.
this would be a good new Thread topic.

Would some of you like to do a write up?