A Chinese LM3886

[Hextejas]

I got a kit with Chinese instructions and I can figure all of it out except this part.
I asked a Chinese speaker what it meant and she said

" K point for parallel"
??? what would that have to do with an amplifier ?
The part that goes there seems to be a jumper but pretty large.
thanks

 

[rayma]

I got a kit with Chinese instructions and I can figure all of it out except this part.

That's for a capacitor, with multiple holes since they come in a variety of sizes.
The holes on each side are all connected together.

 

[bullittstang]

The “K” is for a jumper to another amp to run in parallel or BTL , I’m unsure the difference myself.
Search google and you can see they place two modules to run one set of speakers. Assume it is for more power.
I would leave it blank, it’s possible but I doubt it’s really optimized to run that way.

 

[naturey]

If the photo contains the whole description, I can understand.

 

[leadbelly]

It says "1U". It's for a 1 uF capacitor.

If the K is indeed for paralleling, then it's not a good design. If you want to parallel, the circuit should be changed in other ways, such as in AN1292.

 

[Hextejas]

If the photo contains the whole description, I can understand.

Thank you, I will see if I can find it.

 

[Mark Whitney]

You only need one input capacitor for multiple paralleled amps. Install only one 1uf capacitor, connect the input to this board and connect K of each board together. You probably should also connect the input grounds together.

 

[Hextejas]

here it is

If the photo contains the whole description, I can understand.

the photo and good luck