Super Mini PAM8403 DC 5V USB Digital Audio Amplifier.
The amplifier gives power from 2 to 3 watts. Power supply from 2 to 5.5 V.
Very good audio amplifier.
I purchased a block
I really liked the amplifier. Sound at times much more than on a laptop.
Built-in volume control, and power off. True, in my case, you need to pull out the power plug from the outlet.
I found old speakers in my pantry, I don’t even know what they were from. But inside there were only speakers.
And I decided to strengthen my laptop, make the music a little louder.
So, let's begin.
Two small speakers ..
Amplifier
Power supply from the phone. The voltage at the output of the power module must not exceed 5.5 V. Otherwise, the board will become very hot.
Soldering iron and some wires.
And most importantly, that costs an absolute penny.
And so we will analyze our columns.
In the upper part of the column we make a hole for attaching the volume control.
Or a drill, or using an awl and a set of files.
We adjust the hole and temporarily fix the board to the speaker body. To check the fit.
Now let's start soldering.
When you enlarge the picture, you can clearly see the photo of connecting the amplifier.
First, I connected the audio input to the amplifier. You can use a headphone cable.
In the center, I soldered, as they say, a lot (this is a braid from the headphones).
And the other two are in the drawing, on the edges.
We connect the power., Also from the picture. We fix it with hot glue.
And finally, two speaker outputs. For the conclusion of the wires, we make the grooves of the files. And also fix them with hot glue.
Putting the case together and the amplifier is ready.