| pejinm |
Hi guys,
I build this headphone amp with 4 stereo channels oredered by my friends (musicians),
they will use it like some kind of in ear monitor on rehearsals. Anyway here are some pics...
What do you think?
Cheers:D :D :D |
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| pejinm |
| If anyone interested I will post PCB and schematic... |
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| karahara |
Hi. Nice work, useful thing for musicians.
I'd like to see the pcb&schematic, maybe I built one for my band too. :smash: |
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| pejinm |
The amp is based on NationalSemiconductor LM386N op amp which can work with 6-12V supply.
The PCB layout for 4 stereo chanels attached...
Regards. |
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| pejinm |
...and tracks...
I hope you can use this resolution because I can't post larger pic.
Cheers |
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| karahara |
Allright, thank you.
Thougt of that 386, perfect for such a "Low-Fi" environment. ;) |
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| pejinm |
You welcome,
Please post the pictures of your work when you finished, I would like to see it...
Good Luck;) |
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| EWorkshop1708 |
Awesome little amp.
That's a LOT of 386 chips, hehe.
They work great for small speakers, and real good for headphones.
I made a super listening mic amp and used a 386 on the output, and it's real loud.
I noticed you used large 10uf input caps and 470uf output caps. Very nice.
Also, the box looks real clean.
And by what I see, is the volume is determined by the input source? |
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| pejinm |
Hi EWorkshop1708,
Glad you like it!
Yes there is no pots because most of quality headphones have volume control on them (and I have't got much space left in case he,he...)
Regards;) |
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| EWorkshop1708 |
| quote: | Originally posted by pejinm
Hi EWorkshop1708,
Glad you like it!
Yes there is no pots because most of quality headphones have volume control on them (and I have't got much space left in case he,he...)
Regards;) |
What gain are the chips set to since no volume control is used?? |
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| pejinm |
The gain is set by 18k resistor and it's about 20dB...
I'm thinking to put one pot on input just in case if signal gets too high.
Chiao;) |
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