DIY Mini Cardboard Speaker :)





Hey Guys! It's my First instructable.

This is a DIY ultra-portable speaker with impressive bass and portable design. Featuring high performance audio performance with dual full-range stereo speaker and a passive driver. This versatile speaker allows you to stay connected with your friend with long lasting battery life.This speaker provides upto 3 days battery backup at continuous music playback with a single charge.

Here's the Sound test video (

ere's the base test video(


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Step 1: Parts List

Time to select some proper parts for this Speaker. These parts I'm using to build my speaker. You can use this parts. But if you find better parts then use those parts for better performance.

  • Speakers (3w*2) [$1.5]
  • Stereo Amplifier (3w*2-4ohm) [$1.5]
  • Li-po and Li-ion Batteries (2000mAh)[Recycled]
  • Micro USB Charging Module With Battery Protection [$2]
  • Cardboard [Recycled]
  • On/Off Slide Switch [Recycled]
  • Aux Ready

Step 2: ​Tools & Equipment:

  • Rotary Tool
  • Screw Driver set
  • Glue Gun
  • Soldering iron
  • Baby Hacksaw
  • Sandpaper
  • Superglue
  • Cutter
  • Masking Tape
  • Spray paint

Step 3: ​Take Measurements:

Measure the cardboard and mark it, then cut the layout. Again cut the main layout into two pieces. One for rear and another for front panel of speaker.

Step 4: ​Making Holes:

Take measurement of speaker's diameter and note down it. Draw holes exactly same size as speaker's diameter by using ruler and compass. Don't make bigger holes than speaker's diameter then speaker won't get fit on them.

Step 5: ​Cutting Holes:

This is the most hardest part of this instructable . Take your rotary tool we'll start of by drilling a large hole inside the circular marking then sand of the excess cardboard by using your sanding drum tip. Do the same process for passive radiator. But still I don't have any rotary tool that's why i used only cutter and sandpaper for the cut the holes.

Step 6: Paint Time (most Interesting Part:)

Paint your speaker with your favourite colours. I'm using here two colours matte black and Yellow. you choose yours. I also gave vertical and horizontal pattern for more attractive look. After painting it looks exactly same as my expectation.

Step 7: ​Mounting Speaker & Radiator:

We're going to mount the speakers and passive radiator. we'll start by adding a thin layer of superglue around the edge of the speaker's hole. Once we add our layer of glue, flip the front panel, position it, and rest it on top of our speaker and hold it in place for several minutes. Again we'll repeat the same process for other speaker. After doing so, we'll use the same method to seal passive radiator. next apply a thin layer of hot glue around both the speakers and passive radiator to ensure that they are 100% airtight.

Step 8: Attach Lower & Side Panel:

I started off by sanding the side & lower panel, it necessary to remove the glossy finish, then superglue can join both the panels permanently. Next apply great amount of superglue on the edges of front panel and quickly position it to lower panel then hold it for couple of minutes. Finally add plenty of hot glue at the joint of two panels.

Step 9: Add Slide Switch

Simply make holes for switch by using your rotary tools, after doing this sand the holes perfectly, then install the switches and apply some amount of hot glue on the corner side of switches. you can see that I attached two switches in one place. you can also do this for better result.

Step 10: ​Soldering Speakers, Amplifier and Bluetooth Module

In this part we're going to install and connect the speakers, amplifier and Bluetooth module. At first we'll connect the wire to speakers VCC(+) and GND(-) carefully. Then we connect these wires to amplifier's L(Left channel) ,G(GND), R(Right channel). Next we just connect wire to VCC(+) and GND(-) of amp board. After that we'll connect wire between amplifier's L G R to BT module L G R connection [Note: BT Module has two negative output(LN and RN). So connect Both negative terminals for balanced stereo performance]. Then solder wire on functional buttons.

Step 11: ​Soldering Batteries and Charging Module

here I'm using two batteries one for amp board and another for BT module. But you can easily say that how i'll charge these two batteries. after some research I got an idea. I'm using a slide switch to charge these two batteries separately. we can use this method for charging two batteries one by one without facing any problem. I recommend to use a charging module with battery protection inbuilt but you can use mobile battery, that already has a inbuilt protection board.

Step 12: ​Making the Complete Circuit

Now its time to make the complete circuit. You've to connect all the components carefully and exactly same as the circuit diagram showing.

Step 13: ​Finishing Ideas

Customize your speaker with your creative ideas. I really enjoyed a lot while I'm building this project. Make Your own speaker and show it to your friends, May be they also like to make their own and that's how we DIY maker can expand our community. Thanks for watching this. Again I'm requesting you guy's please vote me. Don't forget to follow me for upcoming projects.



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    4 Discussions


    5 months ago

    Making the body of a cardboard speaker is easy if you can just rip up storage boxes. It's the electronics behind it that is going to be difficult!


    6 months ago on Introduction

    Hello po :) ask ko lang po if meron po ba tong other project na may kaparehong program code? thankyou :)


    6 months ago

    It will be best if you have used wood in the place of cardboard. good work

    6 months ago

    Nicely done on your first instructable! Lots of great, clear photos and highly detailed steps. This is how to do it. Looking forward to your next projects! : )