Hi,
I'm currently based in Bangkok Thailand and just recently got back to DIY audio. Just finished building an inverting 3886 amp and still tackle its stability issue.
I'm looking for good layout PCB of, maybe, Mauro Rev C design for new build, or other design preferably inverting configuration. Since, I'm in Thailand so many of Fremen GBs or available well-engineered board, such as, 3886DS, Modulus86 or even Akitika board are out of reach for me. The closest thing I came across is Russ White PCB design from 2005 (similar to https://www.diyaudio.com/community/...-mauro-penasas-myref-rev-c.71675/post-6099198), which may be available from a dealer in Indonesia.
Is it a good place to start? Is there any other modern design that available in my area, which mostly Aliexpress-style dealers. I'm not looking for best layout but no SMD since I'd like to solder all by myself. I can wait a long since we are still waiting for 3886 availability.
Please suggest.
AP
I'm currently based in Bangkok Thailand and just recently got back to DIY audio. Just finished building an inverting 3886 amp and still tackle its stability issue.
I'm looking for good layout PCB of, maybe, Mauro Rev C design for new build, or other design preferably inverting configuration. Since, I'm in Thailand so many of Fremen GBs or available well-engineered board, such as, 3886DS, Modulus86 or even Akitika board are out of reach for me. The closest thing I came across is Russ White PCB design from 2005 (similar to https://www.diyaudio.com/community/...-mauro-penasas-myref-rev-c.71675/post-6099198), which may be available from a dealer in Indonesia.
Is it a good place to start? Is there any other modern design that available in my area, which mostly Aliexpress-style dealers. I'm not looking for best layout but no SMD since I'd like to solder all by myself. I can wait a long since we are still waiting for 3886 availability.
Please suggest.
AP
Look for a kit on ebay.
With chip amps the feedback path is critical.
Keep it as short as possible.
1mm track = 1nH of inductance.
With chip amps the feedback path is critical.
Keep it as short as possible.
1mm track = 1nH of inductance.
There are PCB suppliers in China, quite fast and reasonable, some have been found good by members here.
Try and see if they will do it for you.
And first tie up chip supplies, that is important.
Try and see if they will do it for you.
And first tie up chip supplies, that is important.
Tomchr sells a very well designed board: https://neurochrome.com/collections/power-amplifiers/products/lm3886-done-right
Thanks, while Fremen is nice but I can't do SMD due to old eyes... For Tom's board, I think they are very well-engineered but shipping from CA to TH is quite troublesome.