DIY : 30W Portable Bluetooth Speaker Box

I made a 30 watt rechargeable speaker box using TPA3110 class-D amplifier board. It's sound quality is really awesome. There are 3 control potentiometers at which we can control volume, treble and bass. You guys also can make it easily at home.

Features of this Speaker box - I added a Bluetooth module. It has many features like we directly can insert memory card and use, We can insert pen drive, AUX Cable and also can use FM Radio.

• Watch Tutorial video on YouTube - DIY : 30W Portable Speaker Box

Let's make it,

Take MDF Board of 6MM thick. 3 Pcs will be same and 2-Pcs will be of different sizes as I took in picture-2.

Please choose your own size.

Make sure that the surfaces should be straight. If not then rub it on sand paper and make it smooth straight.

After that,

Buy - MDF BOARD

Use fevicol and stick it from 5 sides as shown and use clamp to bond tightly after adding some fevicol in the gap of it.

Then put it for dry. May be 4-5 Hours.

After dried this box, use sand paper to make it smooth and equal from all sides, fold sand paper on thick PVC pipe or on any other surfaces as I used in picture-3 and use it to make curved surface. Rub all front corners of it as much you like.

Take your time and make it smooth as much it should be.

Buy - Sand Paper

Now take 4-Pcs MDF board and stick it at all 4 corners by keeping 6MM gap for the back panel. These 4-Pcs MDFs are for Screws.

NOTE : Here I am using 4 Pcs because its only 30W. If you are using more than 30W then please use 6-Pcs of MDF Board and stick at the middle of the box.

Still left any gap then use fevicol and small pieces of MDF bord & mix together, Now fill the gaps with this, keep it for dry.

Now make drill for 3" Speakers at left and right side of this box. I used cup drill bit of 3".

If you don't have cup 3" drill bit then please watch this video and learn how I drilled only with drill bit for speaker.

Buy - Cup drill bit

Take measurement of Bluetooth panel at the middle of this box, Make small holes with neil and drill it after that cut it using hack saw blade and make smooth by rubbing with sand paper.

Next put old dead Bluetooth module inside of this gap and make drill according to the screw size both sides.

Buy - Drill Machine

Make another 2-drill gap at the down of Bluetooth module to put bass tubes. Here I used electrical wiring PVC pipe for bass tubes.

hI used

Next put back cover into the box and make 4-drill gap for the screws where we added 4 small MDF Boards. Then use another bit to make 3MM big hole in drilled gap to get inside the head of screws.

Now guys cut extra out MDF Board and make it smooth by rubbing it with sand paper.

Drill for SPST switch at the back panel.

I like to put it at right back corner.

Next we have to paint the speaker box and its back panel.

I am used golden color spray paint. You may paint stylish.

Wait until it's not getting dried.

Sorry, I forgot to drill for12V DC female power supply jack. So make drill also for it and then

Drill for speakers at the inside of this box. Be careful drill should not be cross the MDF Board.

Now put 15W + 15W speakers and tight it using screws.

I prefer zipsum screws because I like it more and make washer for screws. To make washer I used piece of PVC pipe.

Stick bass tube pipes using Glue stick. I made these bass tube pipes by own using electrical wiring PVC pipe.

Now I soldered 7805 Voltage regulator IC to the input of this bluetooth panel to get continuous 5V power supply. And tighten it to the speaker box.

To add Volume, Bass and Treble control drill three holes at the top panel of this speaker box.

For volume, bass and treble potentiometer's nozzel are not perfect to get inside of this 6MM MDF board so please make half gap drill as shown in the pictures to get inside of it at the inside of the top panel.

Now connect the all wires of amplifier board and bass, treble board.

I used TPA3110 class-D amplifier board and transistor bass, treble board.

To understand it's wiring please watch my videos on YouTube -

• TPA3110 Amplifier Board Wiring with Volume

• Bass, Treble Board Wiring

Stick potentiometers with glue stick and also the amplifier board & Bass, treble board.

Bind the wires using tie.

Now connect the 12V Battery and connect wires of 12V charging socket and switch. I used 1N4007 PN-Junction diode in forward bias to the charging socket.

After that stick battery inside of it and fix the back panel to it and screwed it. Even here I am using zipsum screws.

Put the knob of Volume, Bass and Treble and turn on the switch and connect to the bluetooth & play songs..

Uses it's all functions.

• Check it's Volume, Bass and Treble is working or not. If not working then fix it.

NOTE : You can use a Power Light if you want, I don't like in this speaker box that's why I didn't added.

• Please watch it's tutorial video on YouTube - DIY : 30W Portable Speaker Box

Buy Components Here -

1. Bluetooth Module

2. TPA3110 Amplifier Board

3. 15+15W Speakers

4. 12V Battery

5. 7805 Voltage Regulator

6. Bass & Treble Board

7. 100K Potentiometers

8. Zipsum Screws

9. Glue stick

10. Spray paint

11. SPST Switch

12. 12V DC Male & Female jack

13. Drill Machine

14. Cup Drill Bit

15. Fevicol

16. Tie

So this was the steps to make it guys.

Let me know your opinion about this speaker box in the comment box.

Thank You for being here