100W Ultimate Fidelity Amplifier

[Joel Wesseling]

I received A40 boards from PCBway. Looks like an older version.
Is it the same circuit as the new version with a different layout?
Is there a BOM for this version?

Thanks in advance!

 

[sanbadgujar]

Hello Diyers

Can anyone one have AX-14 amp one pair Pcb layout file of Sprint lay6 or Garber file. I lost my file from my pc.
Please help

 

[bullittstang]

Here are the ones I used, but haven't built them yet.

edit: saw you want 1-pair version, i think that is AX-11 not 14. Don't have it, sorry.

 

[karachay]

page 1200

 

[still4given]

Hello Diyers

Can anyone one have AX-14 amp one pair Pcb layout file of Sprint lay6 or Garber file. I lost my file from my pc.
Please help

I have this sprint file.

 

[Joel Wesseling]

I received A40 boards from PCBway. Looks like an older version.
Is it the same circuit as the new version with a different layout?
Is there a BOM for this version?

Thanks in advance!

Add: Pic of board. The components are numbered but no values.

 

[Hicoco]

P30ZF allmost ready.

The left side is allmost stuffed and soldered, waiting on the last parts 2n5401 and 100uf, should arrived this week.

I will powering up soon.

 

[viki_v2]

Kindly share link for this preamp

 

[Rumen]

I received A40 boards from PCBway. Looks like an older version.
Is it the same circuit as the new version with a different layout?
Is there a BOM for this version?

Thanks in advance!

Hi. It's modificated version by my friend. This board has no ground loops and shows better values on spectogram. If I find the schematic will post it.

 

[Hicoco]

P30ZF Schematic

https://www.diyaudio.com/forums/sol...imate-fidelity-amplifier-875.html#post4850095

 

[Itco]

Add: Pic of board. The components are numbered but no values.

Hi, I attach the schematic here.
C9, R49 are optional. Use them only if you have spectrum analizer to set them.
For R50 use wire bridge.
I strongly recommended to use KSA1381/KSC3423 in VAS instead of NJE350/350 for better OLG and 10db better THD.

 

[Itco]

And some pictures:

 

[asuslover]

The left side is allmost stuffed and soldered, waiting on the last parts 2n5401 and 100uf, should arrived this week.

I will powering up soon.

Looks very nice, can you share files/gerbers with us ?
Thanks

 

[Itco]

Other pics of the Amp.

 

[smartx21]

Not nice... stunning!

 

[Hicoco]

Looks very nice, can you share files/gerbers with us ?
Thanks

Yes i will !!

 

[r_jik45]

@ Itco,

https://www.diyaudio.com/forums/att...amplifier-viber_image_2020-06-05_20-22-09-jpg

Did you solder on top of the solder mask or was there a way to avoid to have the mask on specific traces?
In the second case where did you order your board from?

 

[r_jik45]

(cannot edit anymore)

@ Itco,
Looks like one way to avoid some traces to be covered by the solder mask is to put/add traces in the tStop and bStop layers.
Did you do that way?

 

[Itco]

@ r_jik45
I ordered the PCBs in JLCPCB.
I open the solder mask on the high current planes and tracks, and also for the star ground connections. After that i add tin in the open places.
To add solder mask opens there is two ways in altium. The first one is manual draw (place line) in topSolder or bottomSolder layer and draw on the tracks. The second way is to sellect track and from propperties add manual Paste Mask Expansion width.

 

[r_jik45]

Thanks for your reply.
Not using altium here, sounds like under eagle 'tStop' and 'bStop' are the way to go. Will try when I have to make a pcb again. Ordered last ones in JLCPCB too.
Outputs from eagle users would be nice to hear.