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I've earned an old amplifier with speakers that a friend was throwing away and since the amplifier was not working, I decided to recycle the speakers with an wireless bluetooth set.

Step 1: Check Your Speakers and Choose Your Audio Amp Board

there is a variety of audio amp boards you can get.

i got this one but you can pick an appropriated one for your project.

http://www.banggood.com/TDA7492P-50W50W-Wireless-B...

http://www.ebay.com/itm/TDA7492P-50W-50W-Wireless-...

in my next build i'll try this one for 3W speakers:

http://www.banggood.com/2x3W-Mini-Digital-Power-Am...

it's up to you or the needs of your project. just check some reviews first, the one i got didn't had an AUX line in...

Step 2: Choose and Check a Power Supply

check your amp board schematics for the power supply info.

in my case its 8-25V DC. and i have a box full of old ones.

always check the Voltage to see if it's working well

Step 3: Design a Fancy Enclosure for Your New Amp. System!

Measure the PCB and design 3D file in the CAD software of your choice.

ex.: solid works, fusion 360, sketch up, rhino, blender, etc....

Step 4: 3D Print or Build Your Own Case

if you use the same board as I did, feel free to download and print my design.

http://www.thingiverse.com/thing:1602238

if you don't have a 3D Printer you can always use https://www.3dhubs.com

Step 5: Assemble and Check One More Time If Everything Works

Step 6: Test It Again and Have Fun

<p>Hi @sbizarro</p><p>How did you like the quality of the amplifier board that you used in your project?</p><p>I'm thinking of using a similar board that adds AUX input <a href="https://goo.gl/1sSNbv" rel="nofollow">https://goo.gl/1sSNbv</a></p>
<p>Hi Arthur,</p><p>the sound quality is really nice for the price. mine doesn't have a line in nor on/off button.</p><p>still i use it almost every day and so far works great.</p>
<p>Hey there. I also have some speakers that are not being used.<br>What kind of wire goes into the speakers and to the amp?</p><p>Cheers (;</p>
<p>Hi!! you just need two wires for each speaker, and a power supply for the bluetooth audio amp. module.</p>
<p>This is very cool. so many things are Bluetooth. could the case be modified to include speaker jacks on back an house a small power supply inside? great project! -hjp</p>
<p>Thanks!!! just need to redesign it... maybe in the next one. I really need an AUX Line In.</p>
<p>This is a nice project!</p>
<p>thanks!!</p>
Awesome housing for the board!
<p>thanks!!</p>

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