Introduction: How to Make a 3D Printed Speaker Using PAM8403 Amplifier

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In this post, I will share how I created a 3D-printed speaker with a PAM8403 Amplifier. To see the build you can watch the video attached or continue reading for the details

Supplies

Here are the parts used in this project

PAM8403 Amplifier

  • Amazon USA - https://amzn.to/31Oazgp (https://amzn.to/3oygwaR)
  • Amazon IND - https://amzn.to/3oAwuRN (https://amzn.to/3jBcJpB)

4Ohm 3 Watt Speaker

  • Amazon USA - https://amzn.to/2TvCLQB
  • Amazon IND - https://amzn.to/3oCHkHk

Creality Ender 3 3D Printer

  • Amazon USA - https://amzn.to/37b28ix
  • Amazon IND - https://amzn.to/31tqWyX

Soldering Station

  • Amazon USA - https://amzn.to/3k4PZ2u
  • Amazon IND - https://amzn.to/3k4ybo6

PLA 1.75mm Filament

  • Amazon USA - https://amzn.to/354ccXX
  • Amazon IND - https://amzn.to/34YsiCy

Hot Glue Gun

  • Amazon USA - https://amzn.to/3lL8gCe
  • Amazon IND - https://amzn.to/3dujCb3

Step 1:

First I designed the speaker enclosure using the Freecad software and then printed it with my Ender 3 3D printer.

Please find the attached STL file of the enclosure (only use it as a reference).

Attachments

Step 2:

Next mount two 3.5mm stereo jacks. The first jack is used for Audio input and the second jack is used to connect the second speaker

Step 3:

Next, add a DC jack to power the amplifier with 5volt

Step 4:

Next, mount the 4ohm 3-watt speaker and secure it with hot glue

Step 5:

Next, connect the pins of the DC jack to the 5V pins of the amplifier

Step 6:

Next, connect the pins of one of the 3.5mm audio jacks to the audio input pins on the amplifier

Step 7:

Next, connect the speaker to the left out on the amplifier

Step 8:

Next, connect the Right out of the amplifier to the free 3.5mm jack

Step 9:

Next, close the enclosure and connect the two speakers with a 3.5mm audio cable and then supply it with 5V.