Adding a Female Aux Jack to Your Old Headphone - the Best Upgrade You Can Do!

Hi guys, welcome back into one of my new instructable.

Have you ever broken a headphone jack? Probably the answer is yes! Or simply have you ever had issues with headphone cable? Again, probably yes. Today we will see how to solve all of these problem once for all by using...

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• 3.5 female audio jack
• AUX cable (i recommend no less than 1.5 meters)
• A 3D printer (OPTIONAL) (to make things even more beautiful)
• A soldering iron
• Obviously, a pair of headphones

Before trying to fit the female jack into the headphone, we need to figure out where this is going to be placed.

So, in my case i had a really old headphone with no space in it to place the female jack so i had to create a new "driver-holder" or whatever you wanna call it to make the thing nice and steady.

I designed the new driver-holder of my headphone with a little stretch to than insert the female jack (as you can see from the pictures) using Fusion 360, a really nice software to create things to 3d print and more.

Really, go to sell all the things you received for Christmas as a gift and buy a 3D printer. For makers like us is a life-saver!

Then i just had to 3d print that (it took about 50 minutes) and i was ready to listen to some good music. Oh no, there is a few steps more!

Don't worry, it's only three wires! But you need to pay attention cause there's the LEFT channel, the RIGHT channel and the GROUND pin.

So first of all, you need to know for both the LEFT and RIGHT channel, which is the ground and which is the positive of the audio-driver.

Well, don’t' worry cause standard colors comes to help. In fact, for the majority of the audio device, the white (or black) wire is the negative (so the ground) and the red one is the positive.

Once detected the four wires, the RED LEFT, WHITE LEFT and the RED RIGHT, WHITE RIGHT, you need to solder those to the jack.

On the jack is the same, you need to know for each pin what is what. The best thing you can do is try with a multimeter the continuity of the signal.

You have to use a male jack to insert it into the female one and then, according to the picture above, you have to write down what is the LEFT (with an L), the RIGHT (with an R) and the GROUND (with a G) on the female jack.

Now, when it comes to solder you have to connect the ground of the female jack to the ground of the left channel and to the ground of the right channel. 

Then just solder the red wire of the left channel to the L pin of the female jack and the red wire of the right channel to the R pin of the female jack

Simple, isn't it? Enjoy your brand new pair of headphones