How to Build a Bluetooth Speaker

New technological things are becoming popular and being utilized as we move through the world. Also, customer service is becoming better and better. It’s a blast to play Build a Bluetooth Speaker. My passion for DIY led me to build my own set, which I’d want to provide as a resource to anybody else interested in doing the same.

What you want the final product to look like will have an impact on the pricing. It’s entirely up to you what kind of material you want to use to house it in; here are some interesting wooden boxes housing that you can either purchase off the shelf or build yourself at home. So, grab your materials and some basic equipment and begin building your own personalized DIY home Bluetooth speakers!

Let’s understand how to create a Bluetooth speaker from the scratch. To begin with, you need be familiar with the many kinds of DIY Bluetooth speakers available.

Why do we need a Bluetooth speaker?

Let’s face it, no one wants to listen to music on their phone while standing near a speaker at a party or concert. Fortunately, we’ve got Bluetooth technology to help us out! You don’t have to be near a speaker to change tracks or listen to good music with this technology.

If you suspect foul play or are unable to make your call, check all of your wire and cable connections as a first step in troubleshooting.

Even if you don’t hear a dial tone, you should double-check your wire connections since this is the most common source of network problems.

DIY Bluetooth Speaker types

Our selection of DIY Bluetooth speaker kinds is reasonably priced, and, to be honest, they’re also very enjoyable to construct for the average DIYer.

DIY Battery Powered Bluetooth Speaker

Build a Bluetooth speaker that is rechargeable, portable, and battery powered. A C-note speaker kit and KAB amp board were used to create it! You’ll also need several Dayton audio cable bundles as well as other materials! It’s going to sound incredible, no doubt.

DIY Portable Bluetooth Speaker

This pair of speakers isn’t only elegant and fashionable; it’s also small enough to fit in your pocket! Old modules, radios, and damaged speakers are all used in their construction, as are other repurposed materials.

Simple Portable Bluetooth Speaker

This DIY Bluetooth speaker has a detachable back, a few indication LEDs, a magnetic charger, and a better switch that allows it to work very well and flawlessly! It comes with 5W speakers, an amplifier, and a Bluetooth audio amplifier, as well as a few more components.

Bluetooth Boombox Speaker

A 2*25W Bluetooth amplifier board, 18560 rechargeable lithium-ion batteries, dome tweeter speaker drivers, passive audio crossovers, woofer speaker drivers, and an AC connector are used to construct this DIY handmade Bluetooth speaker. More materials and assembly instructions may be found here.

Portable and Powerful Bluetooth Speaker

With the same easy and basic hand tools, you can build this amazing Bluetooth speaker! Mini handsaw, cutter, hot glue gun, soldering iron, super glue, masking tape, sandpaper, metal file, and marker pen are just a few of the tools you’ll need! For technical information, go to the tutorial.

How to Build a Bluetooth Speaker

Step 01: Gather Supplies

Needed Components: 

  • Something that will house the components
  • Bluetooth amplifier
  • Bluetooth module
  • DC power supply cable
  • Electrical tape or heat shrink tubing
  • 24V DC power adapter
  • (x2) Dayton Audio 40W exciter
  • 5.5mm x 2.5mm female socket
  • Solder
  • Any kind of masking or painters’ tape
  • 18-gauge Speaker wire

Optional Components:

  • Audio Taper Pot
  • DP-DT Switch
  • LED
  • 470 Ohm, 1/2-Watt Resistor


  • Wire clipper/strippers
  • Soldering Iron
  • Power drill
  • Assorted drill bits, or step drill bit

Step 02: Assemble the Bluetooth amplifier

Do you have everything you need? Now, let’s get started! Read on for an explanation. Also learn How to choose amplifier for speakers

  • Cut two matched speaker wire lengths that are a bit longer than you think you’ll need.
  • Heat the two terminals on each exciter with the soldering iron and add a little amount of solder. Wires and terminals that are tinned together are simpler to solder together and create superior electrical connections.
  • The wires on both ends of each speaker cable should be stripped, and the two wires on one end should be tinned.
  • Solder the tinned ends of one speaker cable to the terminals of one of the exciters, making that the polarity is right. Replace the second speaker cord and exciter and repeat the process. The positive terminals will be labeled with a “+” or dyed in red. There are three typical methods to determine the positive wire on a paired speaker cable: The individual wire may be red, have a white stripe, or be the strand with a ridge running along it if the cable is all the same color.
  • Connect the opposite ends of the two speaker wires to the Bluetooth amplifier’s terminals, paying attention to polarity once again.
  • Connect the amplifier to the 24-volt DC power adapter and turn it on.
  • Turn on Bluetooth on your phone, tablet, or laptop by going to the settings menu.
  • Find the new device in your Bluetooth connections, connect to it, and play some music.
  • Turn on the amplifier and place the adhesive backing side of the exciters (but do not remove the backing at this time) on any surface to ensure everything is connected and functioning correctly. To have some fun, try pressing the exciters against different surfaces to hear how they sound.

Step 03: Sort out where to put the exciters

Exciters provide a high-quality speaker by vibrating the surface on which they are placed. There are no grills or holes in the surface since the sound is produced by vibrating the substrate/surface, making the system more resistant to vandalism and weather intrusion.

  • Switch on the amplifier.
  • Place one exciter’s adhesive backing side (do not remove the backing at this point) on your “speaker” surface and push gently with one finger to keep it in place.
  • Slowly rotate the exciter around your “speaker” until you find the ideal location for it—this may be done on the inside or outside.
  • Using painters’ or masking tape, mark the location.
  • Repeat with the second exciter.

Step 04: Install the amplifier

Locate a suitable place for the amplifier to be installed.

  • If you want control knobs on the outside*, make sure the space is narrow enough for the nuts to catch on the shafts of the separate controls.
  • Measure and note the three holes’ locations.
  • Drill holes in the ground.
  • Shafts should be inserted through holes and nuts should be used to secure them.
  • Put knobs on the shafts.

The amplifier may be placed anyplace using 3M double-sided foam tape if the controls don’t need to be visible or if concealing them is desired.

Step 05: Install exciters

Follow these guidelines while installing the exciters.

  • Remove the adhesive backing and place the stickers in the previously marked areas, pressing hard to attach them.
  • Return the speaker wires to the amplifier, cut to length, strip the ends, and put in the speaker terminals, paying attention to polarity.
  • As required, use electrical tape to secure loose wiring.

Step 06: Install female socket for AC to DC adapter

Find the ideal spot for the socket and drill a hole the right size for it. Then,

  • Heat the terminals on the rear of the socket with the soldering iron and add a little amount of solder to them.
  • Remove the nut from the socket’s threads, insert the socket into the hole, replace the nut, and tighten.
  • Locate the amplifier’s power cord, which should have a male plug on one end and exposed, stripped, and tinned wire on the other.
  • Cut a portion of the paired red and black DC power line long enough to attach the amplifier’s power cord to the already-installed female socket. On each end, strip both ends and tin both wires.
  • Connect the positive and negative (red and black, respectively) wires to the amplifier’s power cord.
  • Solder the opposite end, both positive and negative, to the female socket’s proper terminals. The center pin is typically connected to the positive terminal, but check the power adapter to see whether the center pin is connected to the positive or negative terminal.
  • Wrap electrical tape around the soldered connections to keep them from contacting and shorting out.

Step 07: Install Amp and Bluetooth Module with each other

Purchase your Bluetooth modules and amplifier circuit boards individually for greater flexibility over your speaker design. Remember that both an amplifier and a Bluetooth speaker module need power, so use the same power source for both. We suggest that you use a 12 volt power supply.

  • This phase is completed by cutting and screwing wires in your BT module and Amp with the proper wire terminals.
  • We’ll use one power line to power both the amp and the BT unit since we don’t want to utilize two separate power wires.
  • Make a mental note of which side is which.
  • Then, on the amp, screw in the cut ends to the screw-in terminals.
  • Finally, connect the Bluetooth module.

Step 08: Getting the Audio

The next step is to get audio from our Bluetooth speaker module and send it to Amp for amplification. However, there is an issue that you may face. Because we recommended that you share the power, your speaker may buzz.

Now you’re probably cursing me and interrogating me about why you forced us to do this. But don’t be worried! We utilize a ground loop isolator, which should be connected between your amplifier and the Bluetooth speaker module. Don’t worry about which end goes where; it can work on either end!

  • Use solder and a soldering iron to keep all of these wires connected to their respective components while joining them to achieve your desired connections.
  • Keep in mind that a good and clean connection is essential.
  • You’ll need to use your soldering iron to connect the wires to the speaker terminals and the screw terminals on the board once more. Just go ahead and do it!

Make that all components need the same voltage and that the AC to DC converter is the right one for the job. If you want, you may use traditional speakers. Make that the resistance (in Ohms) and power (in watts) are in line with the amplifier’s specifications. The speaker may also be powered by a rechargeable lithium-ion battery, as long as it provides the proper voltage.

Find out Types of Speaker Connectors also.

Step 08: Testing

Your fundamental electronics are now complete. You may test it out by plugging in the electricity and connecting a Bluetooth device.

  • Close the speaker and connect the power supply.
  • Activate the amplifier.
  • Turn on Bluetooth on your phone, tablet, or laptop’s settings.
  • Go to your Bluetooth connections, locate the new device, pair it, and start
    listening to music.

The Bluetooth module is now sending full-volume audio to your amplifier. Although you can adjust the level of whatever device you’re using, adding a volume knob may be a smart idea. That manner, you may lower the amp level while increasing the device volume. This will offer you the same audio quality as before, but with less ‘hissing’ from the speakers. To add a volume potentiometer, see the amp’s handbook.

Step 09: Enclosure

You probably want it to look a little better than a tangle of cables now that you have a great sounding speaker. I built a basic pine box, painted it black, and topped it with a rustic piece of wood.

I simply used what I had on hand to make a box. Now I only needed to cut a groove in the middle divider to enable the wires to flow from one side of the cabinet to the other, and I did so using a round rasp. The speakers are mounted on a divider in the center. Then, to hold it in place, I put screws through the center divider and into the front panel. Finally, at the rear corners, I glued tiny triangles into which the back panel would screw.

Step 10: Adding Power switch

In line with the power cable, I simply installed a standard toggle switch. Make certain you use one with a high enough rating. I also added another toggle for the mute switch, however this time it’s a double throw switch with six terminals. (There are two sets of on-ground-off.) This is connected between the amp outputs and the speakers.

Step 11: Final Step

Then, with the exception of the front baffle, I applied this 12″ sound dampening foam to all of the cabinet’s inner faces. The foam has a peel-and-stick backing, so I simply cut it to size with scissors, being careful to cut around any holes I had already drilled. The crossovers and amp board may alternatively be placed on the interior of the cabinet. I did this with screws and just screwed them into the middle divider.

To finish, I placed the resistor mentioned above in front of the LED and connected it to the amp’s power connections. This creates a beautiful power indication light. Install the rubber feet, handle, and ports before attaching the back panel and plugging in the speakers.


In a nutshell, this is what the process to Build a Bluetooth speaker involves. Because this is a do-it-yourself activity, the outcomes may not be as accurate and dependable as product. The sound quality of these DIY Bluetooth speakers is completely depending on your degree of technical knowledge. Furthermore, use extreme caution while working with wires or electricity, and follow all safety precautions to prevent getting electrocuted. It is also simple to employ a specialist to assist you with the Bluetooth Speaker construction.

We hope that after reading this guide, you understand how to build a Bluetooth speaker and are ready to put it to use on your own. These cordless Bluetooth speakers will greatly improve your listening experience!


Here is the section for all your answers about How to Build a Bluetooth Speaker. Check the questions out.

How can I increase the volume of my Bluetooth speaker?

Set the speaker in a corner or near to a corner to make the sound amplify louder. This may really increase the loudness in the room by 40%. Finally, since the wall acts as an amplifier, putting the Bluetooth speaker against a wall may function.

How can I keep my speakers dry in the rain?

During chilly weather, experts utilize plastic bags or containers to cover the speakers. While this offers some shelter from rain, sleet, snow, and excessive humidity, the temperature change may still cause problems. Finally, during inclement weather, turn off your speakers.

Is it worthwhile to build your own speakers?

Apart from being a fun project, there are many benefits to constructing a speaker from a kit, the most important of which is that you can obtain a beautiful, high-quality speaker for a fraction of the price it would usually cost. Fortunately, you can buy a fantastic do-it-yourself speaker kit for a lot less.