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USB Speakers Into Portable Battery Powered Speakers!

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Picture of USB Speakers Into Portable Battery Powered Speakers!
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I bought a set of super cheap USB powered computer speakers on sale for $4 at my local grocery store a while back. I figured for $4, I couldn't really go wrong. They ended up being underpowered and just all around not great. So I thought with a few slight modifications (new amplifier, internal battery, etc.) I could turn them into a half decent set of travel speakers. Since they were so cheap to begin with, I'm not too worried if they get damaged/destroyed, so they're ideal little speakers to bring on camping trips and the like.

Parts:

-Old computer speakers

-ON/OFF switch

-Female 3.5mm jack

-Replacement amplifier (Optional. You can reuse the original easily, I just wanted a little more power/quality)

-Battery (I used a 1200mAh LiPo I had lying around)

-Charger for battery

-Misc hardware (Depends on your exact speakers)

Tools:

-Soldering iron and solder

-Heat shrink tubing or electrical tape

-Screwdriver (if your speakers are screwed together)

-Tweezers (not necessary, but very handy to get into tight spaces)

-Hot glue gun

-Epoxy/super glue

*Before I begin, I apologize for the lack of pictures from some steps. I got a little too into making it and forgot to take pictures of some of the steps!

I added a video of it playing. Not crazy powerful, but pretty decent for what it is :)

 
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FahadA427 days ago

thanks so much

pjoshi6 made it!2 months ago
hey can I use power bank..
it also gives out a dc potential difference of 5v
temp_336460296.jpg

This is really cool. I just resurrected an old iPod mini with a 32GB CF card and the battery life isn't what I want. I am going to hack it into a larger battery and hard wire some speakers like this that run off the same battery. This is very helpful.

ctx1985 (author)  josephsmythe1 year ago

Thanks! That sounds like an interesting project! I'm actually planning on doing the cf mod on my original iPod 3G. Does it work alright with your Mini?

nsalman21 year ago

was skeptical at first but, hey! these sound pretty nice! Great job!

ctx1985 (author)  nsalman21 year ago

Thanks a lot :)

newbeatle1 year ago

so nice can you tell me wuere to get the battery charger ? i have a pair of sony ericcson speakers but the amplifier circuit are damaged, maybe with a lm386 do the job for each channel .

thanks in advance, regards from mexico

ctx1985 (author)  newbeatle1 year ago

Thanks! Here's a link to the charger I used:

http://www.ebay.ca/itm/370683029370?ssPageName=STR...

Yeah LM386 should definitely do the job!

seems nice and thiny , i suppose you just have to solder the battery there . i'll look for another things to ask for, thanks 4 your info !!

ctx1985 (author)  newbeatle1 year ago

No problem! If you need any help with anything else, just let me know :)

Interesting but what is a LiPo battery? Normally just for enjoyment where do you use KW's of sound? Handy

ctx1985 (author)  KROKKENOSTER1 year ago
Hey Lipo is just short for lithium polymer. Just a type of high capacity rechargeable battery. You'd find them most commonly in cell phones, Mp3 players, small Bluetooth speakers, etc. It is a very handy little stereo :)
agis681 year ago

nice job!

ctx1985 (author)  agis681 year ago

Thanks!

muddog151 year ago
Not that expensive. Thanks!
ctx1985 (author)  muddog151 year ago

No problem!

Farid0071 year ago
You got one more vote in the gadget hacking contest
ctx1985 (author)  Farid0071 year ago

Thank you very much! :)

Janolucero1 year ago

cool i'm doing this on my free time!

ctx1985 (author)  Janolucero1 year ago

Thanks! It's a great little rainy day project :)

Matt Carl1 year ago

Great job man! do you have any links to those specific speakers? Have been looking for some cheap computer speakers!

ctx1985 (author)  Matt Carl1 year ago

Hey thanks a lot! Here is a link to them with their basic information. I can't find a link to buy them online at the moment. I'm Canadian but living in Poland at the moment and I got the speakers on sale at a local grocery store. Here's the link anyways:

http://www.media-tech.eu/products/speakers/MT3140R

Maybe you can find a set used on eBay or something? I'll keep trying to find them for sale online though and will post a link if I can find one. Hope this helps a bit at least :)

awesome bro....but did u used regulated battery charger?
ctx1985 (author)  tejas1996241 year ago

Thanks dude! Yeah...It's a cheap Chinese one, but works fine, plus the battery has a protections circuit built in to protect it from under/over charge as well.

muddog151 year ago
Cost of building from scratch?
ctx1985 (author)  muddog151 year ago

I'd say about $16.00. Battery originally cost me like $10, speakers were $4, switch was $0.60, battery charger came from China on ebay for around $1.50 originally.

Nice build, great photos!

ctx1985 (author)  craftclarity1 year ago

Thanks so much!