Instructables

DIY Bluetooth Speaker

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Meet the PartyBar™! Make a wireless speaker, loud enough to fill an entire room! With a budget less than $15, you can have your own Bluetooth speakers made from scratch materials! It's slick, stylish, descent and most of all it's compact and fits in your pocket. This is a great weekend projects for enthusiasts and audiophiles.

It's small but packs quite a punch. With the help of "35mm Neodymium Drivers" the PartyBar™ delivers a solid stereo sound. It's equipped with a 1000mAh Li-ion battery meant to last for 9 straight hours, replacing it with a 2,400 LiPo will result to a staggering 22 hours of continuous playback!

Are those ready made speakers?
A lot of people thought that this was a ready made product, well it's not. It's actually made from recycled materials such as broken speakers, radios & old modules. The project box came from my eyeglass's container :D



Techie Description:
The PartyBar™ is equipped with two outstanding Neodymium Speaker drivers. Neodymium itself is a rare-earth metal. Magnets made from neodymium are light and very powerful, making the speakers more compact and gives a higher clarity rate.

Of course good speakers must be powered by good amplifiers thanks to Nsiway's NS4263 dual 3W SMD chip, the PartyBar™ delivers an excellent audio, good enough to compete in today's market. It has a class AB amplifier with a THD rating of 0.1%. A Class AB amplifier delivers fully symmetrical wave amplification, in short the audio given off by this amplifier is pure and clear.

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Specifications:
- 1,000 mAh Rechargeable Li-ion Battery (9hrs Playback)
- Dual 3W (4ohms) 35mm Neodymium Drivers
- High Efficiency 2x3W Amplifier (0.1%THD)
- 15 meter Standard Bluetooth Range
- 3.5mm Auxiliary Ready
- Mini USB Charge Plug



 
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Step 1: Parts & Materials

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The links are just alternatives. Read the next step and find out how I got my parts for under $15 :))

Parts & Materials:
- Stereo Bluetooth Module (Updated: $6 Cheaper)
- 2x3W Speakers (Updated: Now Priced $2.80)
- 2x3W High Efficiency SMD Amplifier
- Passive Driver (optional)
- USB Li-ion Charging Module
- 1000mAh Li-ion Battery
- Simple Sliding Switch
- 3.5mm Stereo Jack
- Eyewear Container
- Matt Black Spray Paint

Tools & Equipment:
- Cordless Drill (w/ 5mm Bit)
- Rotary Tool (w/ Flute Bit)
- Leatherman Multitool
- 40W Soldering Iron
- Hot Glue Gun
- Super Glue


Step 2: Hacking Time! - How I got my parts for free!

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That Is An Awesome Case! Where Did You Get It?
My dad is an eye doctor & surgeon (ophthalmologist). Since I'm a guy who uses corrective lenses, I have a huge pile of unused eye-wear containers. One day I came across this funny, Garfield case (from my grade school days). The first thing that poped-up in my mind was to make a Bluetooth speaker out of it.

Where I Got My Speaker Drivers:
Okay let's get started! To start of, I got these awesome "Speed-Boat Speaker" for a cheap price of P320 ($6.50). Of course cheap products aren't that reliable, it broke after 6 months. Since I'm a hobbyist, I prefer breaking down defective products and studying the parts instead of surrendering it to the warranty center.

If you want to buy better ones, PartsExpress.com serves a wide variety of options!

Where I Got My Amplifier:
I got my amplifier from DealExtreme (dx.com). Apparently it's a discontinued product. I got it for $1.70 on a clearance sale.

Where I Got My Bluetooth Module:
I bought my Bluetooth module from DealExtreme (dx.com). Again, my Bluetooth model was discontinued and no longer available. I got it for $6 on a clearance sale. Right now there's an alternative model but costs more than the previous one ($12).

Isn't this just a repackaged project?
No it's not! The speaker drivers inside the "boat speaker" was indeed good but to be honest, it didn't come with the best built in amplifier. It was made from bare SMD transistors and not a SMD I.C. package, it was not that effecient, and lacked power to drive off these 4 ohm speakers.

Step 3: Drilling The Holes For The Parts

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1st.) Use your pencil to mark the soon to be cut holes.
2nd.) Get your rotary tool and flute bit, cut off the plastic on where the speakers will be mounted.
3rd.) Attatch a 5mm bit to your cordless drill and bore a hole for the auxiliary input.

Step 4: Painting The Case

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Before mounting the speakers and components be sure to paint the case first. You don't want to spray paint over your drivers

Looking good on a matt black paint job! :D

Step 5: Hot Gluing The Speakers & Components

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Carefully hot glue the speaker drivers to your plastic casing. Be sure to cover all the gaps, it must be 100% airtight. If air escapes the case, the "PartyBar" would sound like crap :D

If you are concerned that the hot glue could melt because of the heat given off by the amplifier module. There's nothing to worry about since the "class AB high-efficiency amplifier" doesn't heat up that much.

Step 6: Soldering Them Together

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Solder all the modules together. This project requires a little experience in electronics. If you need help, feel free to write a comment!

To make your work easier, you can follow the block diagram above.

Step 7: Sealing The Enclosure

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Apply enough superglue around the edges to seal the enclosure. Be sure to cover all the gaps, it must be 100% airtight. If air escapes the case, the "PartyBar" would sound like crap :D

Step 8: You're Done!

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Enjoy your PartyBar!

Step 9: Meet The "Version 2.0" (SUPERCHARGED)

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Meet AirJam, the DIY Supercharged Bluetooth speaker. Ready your tools, we are making one from scratch! Thanks to your comments and suggestions, I was able to make a v2.0, named AirJam.

Click Here To Visit: DIY Supercharged Bluetooth Speaker (v2.0)
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SMALL SIZE, BIG SOUND:
Despite AirJam's tiny size, it has the ability to surpass its competitor's performance. Thanks to the sandwiched speaker orientation, I was able to fit 4 Full-ranged speaker drivers in one tiny enclosure (2x7x2"). A "passive radiator" was added to extend the lower bass frequencies, thus resulting to a much punchier bass. Compared to its rivals, the AirJam has 4 active drivers and one passive radiator, offering deeper bass and wider mids.

CHANGE TRACKS WIRELESSLY (works with Siri!)
Thanks to Bluetooth 4.0, AirJam can receive Bluetooth transmissions up to 30 meters! Whether you are using your laptop, tablet or phone, you can easily switch tracks wirelessly. The handsfree feature works great with Speakerphone, Skype, FaceTime and also Siri!
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Specs & Features:
- Includes Handsfree Microphone (Speakerphone Function)
- Quad 3W Fullrange Speakers (4Ω - 35mm drivers)
- Quad 3W High Efficiency Amplifier (class AB)
- Li-Po Battery 1,300mAh (20hrs Playback)
- Command Buttons (Volume/Pause//Play)
- Tested dB (via SPL): 96dB @2ft
- 30m Bluetooth Range (v4.0)
- Single Passive Radiator
- 3.5mm Auxiliary Ready
andrea biffi3 months ago

great idea using a glasses container!

efes3 days ago

Hello, I have PAM8403 Audio Module DC 5V Mini Class-D digital amplifier board. 3W speakers 4 ohms. jack female connector, 2x 2600mAh batteries connected in parallel.

after switching noise is low, inaudible.

the connection cable jack male to male and connection to the phone noise is louder.

how to suppress noise? capacitor to each speaker?

chris23922 months ago

Hello, Great Idea!! i would like to turn an old pair of speakers that im rather attached to into bluetooth speakers. i did do eletrical engineering at college so i should know how to solder still but im afraid im totally lost when it comes to wiring up speakers, i think i will buy exactly the same boards and speakers as you. would you be able to go into more detail on where to solder the wires to which bits of the boards please? thank you for your time, Chris

ASCAS (author)  chris23922 months ago

Wait for my next speaker build. I'll show a much better board combo.

Any idea when this will be available. Considering building this for a school project but need the wiring instructions. Thanks!

Hyginx18 days ago

What capaciters are you using and where do they go? Also, what adaptations would i need to make for 2 100W 4 ohm speaker?

tekletowner20 days ago

If ANYONE has SUCCESSFULLY made this speaker based off instructions, please PM me. Having a bit of issues.

ASCAS (author)  Minitothemax1 month ago

Yup, but you would need a 14v battery for your amp.

Hi,

if you use this bt module, can you pair two speakers at a time?

http://www.aliexpress.com/item/SPK-B-Bluetooth-Aud...

if not, what will it need to do so?

Thanks for the fast answer i really like your speakers.

easy but good i made in just 2 hours. I painted metallic gray looks awsome
ASCAS (author)  Andrew Garfield23 days ago

cool!

iaurelius23 days ago
I am interested in knowing more about the battery chraging module. (I am new to ATTEMPTING to design my own portable bluetooth speaker.). I took apart one speaker I purchased late last year, but given its low output, I aim to build one using a 20w module. Where can I buy a battery charging module? I would be more interested in purchasing a class d amp module that already includes the battery charging module..perhaps bluetooth as well, not unlike what OEMs design and use in their portable speakers, though I have not found one which includes everything (excluding the battery and speakers). Any thoughts?
ivmilicevic29 days ago
How did you connected battery to charging module? Is it soldered?
ASCAS (author)  ivmilicevic29 days ago

Yes it is soldered.

Is there some special procedure? Or just like soldering two wires together?
booeyoh2 months ago

I saw in the pictures capacitors attached to the amplifier, but I don't see anything about those in the parts list or instructions. I am not even to novice level, but I am inclined enough to make my parts look like the parts in the picture. So my speaker works (albeit in a tupperware conainter for now), but it would seem that the missing capacitors need to be added, can you let me know what I should add there?

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ianni booeyoh1 month ago

I hope the response did not confuse you more and you find that info useful.
Have fun!

ianni booeyoh1 month ago

Lower frequencies in playback draw more power from the amplifier so bass could be attenuated due to voltage drops. That capacitor is added to assure the extra juice lower frequencies need. I don't think that is necessary because you could easily put the battery with short wires, close to the amp and the amp already has 2*47uF tantalum capacitor (which is more than enough).

But, if you want to be sure you could put the extra capacitor between the + and - of the amplifier board (on the pins of the board where you connected the battery wires).

If you want to go deeper you could check the datasheet and you can see that pins 2(L), 15(R) of the PAM8403 are GND pins and 4(L), 13(R) are VDD (+) pins. The best way to connect the capacitors are as close as possible to the power pins (GND and VDD) as are those already on the board (see the picture).

Also you should have in mind low ESR capacitors (don't put the cheapest you can find) because they consume precious power - after all it's a portable device and you should be power effective. Another suggestion is not to exceed 200uF (or this case 100uF on each side) because the bigger the capacitor, the bigger the power draw at startup, and also voltage fluctuations. As the initial power draw increases the battery life shortens a lot.

In my opinion if you really want to add the extra capacitor is to find another pair of tantalum capacitors (THD or SMD) of about the same capacitance and solder them on top of the other ones marked in the picture. Tantalum have really low ESR, lower leakage, etc so are better for this situation.

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hi, nice instructable!

just one question, is the bt module mono or stereo???

rudrasinh1 month ago
ASCAS can you tell me how to make a aux Bluetooth adapter.
713900MIKE1 month ago

and sunglasses container could probably be a good housing too. Those sure easily obtained as well.

mrkii1 month ago

Hello, Great Idea

How has connect Bluetooth in step 6 ?

ASCAS (author) 2 months ago
NEU2 months ago

can you please tell me , where to buy all those parts ?

Thank

tekletowner2 months ago

Hi,

I got all the parts, but need help with exact details for putting together. I love the details you have here, but as a first timer, i need more help. lol Can you PM me with help on some clarifications?

This Instructable popped up in my email before Christmas. Everyone was either buying or getting a Bluetooth speaker. I wanted one, but I refused to pay $100+ for one. I thought the Party Bar was my answer, and I ordered the parts. It took FOREVER for them to get here. Really, it was about 4 weeks, I think.

Anyway, I finally set to building yesterday, and I sit here this morning feeling defeated for a couple reasons:

#1 I can follow directions, but the wiring diagram and instructions are essentially useless without prior electronics knowledge.

#2 My Bluetooth module is pretty much destroyed from where I tried to remove the USB plug.

I desoldered it, and the whole thing then kinda just ripped off the PCB and I'm fairly certain it's useless...because I don't know what I'm doing. So here I have all of these parts and stuff which was A LOT more than $15 mind you, and now what?

Your Instructable is great because it inspired me with a ton of ideas, but you got lazy in the middle and didn't explain some steps well enough to complete the project. Namely the wiring. There are all kinds of places on some of these components to solder. Some of them are obvious like L and R, but others are obscure. So detailed images of how you soldered the parts together would have been so helpful. So, I don't know whether to thank you or really what to do. I'm definitely interested in your new speaker project, but I hope the instructions are more clear.

ASCAS (author)  waxingpoetic753 months ago

Sorry if this ible doesn't have clear instructions. I hope your modules are still working. Hang on for a while, I will be releasing another BT guide similar to PartyBar's build. We will still be using the same parts so there's no need for you to buy new parts.

Sakla ASCAS3 months ago

I have ordered and am waiting for the parts, but yes, that is the thing I am most concerned about is the wiring. I have a very (VERY) basic understanding of what I need to do -- but in your block diagram, you don't show how things are connected to the switch. I have an idea, but I am pretty nervous about experimenting with it. The switch is to enable charging, correct? It is not an "on/off" switch?

ASCAS (author)  Sakla3 months ago

Please wait for the release of the other tutorial. I promise that it would be more detailed and will show a more detailed wiring instruction.

The switch isn't for charging but for on/off

Sorry, didn't see you had already answered this question ASCAS. I will definitely give your other tutorials a look. Thanks for your responses. You are on to something, and people want to make your products!
The switch is to turn the speaker on and off. The unit should charge automatically when you plug it up via the charging module.
Thanks for the response! I really like your projects. It's not your fault I don't know jack about electronics. I hope you will give more detail on the wiring since that's where so many seem to get stumped.
FuzzyBearGeek3 months ago

My parts showed up! Whut Whut!!!
Now, after reading you're doing another one with the same parts, I'm not sure if I wanna follow this one or the new one! What's the new one going to entail? Excited!

ASCAS (author)  FuzzyBearGeek3 months ago

The new one will provide a much more detailed wiring instruction. I won't be using the old eyewear container. Instead, the enclosure will be made of acrylic, similar to AirJam's build (my other ible).

Excellent! I forgot to buy the charging module, so I'm going to just make something that can swap out various extra batteries from old phones. ReUse! ReCycle! You have a great brain!

metalix3 months ago
where is the supercharged
ASCAS (author)  metalix3 months ago
You have no idea, how close is the ible to getting published. Well here's the draft. The complete guide will be published tomorrow, in time for the hack it contest deadline.

DIY Supercharged Bluetooth Speaker (v2.0)

It's up! And wicked! You must have a fun day to day life. :D

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