DIY AUX Splitter




Introduction: DIY AUX Splitter

About: Hey there, my name is Andrey. I like to build, fix, reuse and tinker. I joined Instructabels because I like to share my projects with you. Hope you support me and my projects.

Have you ever had the need for a second AUX connection on your phone or just wanted to share headphones with someone but didn't want to use only one headphone. Well today is your luck day, I will show you how to make a AUX splitter so you can use two headphones from one AUX.

Step 1: Tools and Parts

The tools and parts needed:

  • Two AUX connections (I salvaged mine from a old computer)
  • One headphone jack
  • Wire strippers
  • Tape (optional)
  • Soldering iron
  • Hot Glue gun

Step 2: Wiring and Soldering

First you have to check the connections and find out where every wire goes, I used a multimeter to check the connections. Then trim the wires down to solder them, then solder the wires together.

Step 3: Hot Glue

Now use Hot Glue to glue the two AUX connections together. I used Hot Glue to make a mold or case for the wires and used the side of the Hot Glue gun to make the sides smooth. Then I used a black marker to color the Hot Glue and make it look nicer.

Step 4: Test and Have Fun

Now just test your new AUX splitter and use it every where you need it. The cost of this AUX splitter was free but if you were to buy one you would have to spend at leased $3 on a cheap one. Thanks for viewing and vote to support my projects.

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    6 years ago

    Unfortunately this project suffers from a basic flaw - the implementation means that any set of headphones can load the other set(s) and therefore introduce distortion to all sets.

    This is because different makes of headphones have different impedances which the output device (phone, amplifier, etc.) sees as a variable load and so ends up providing variable output power which one moment can be too much and the next not enough to drive the different headphones.

    Even the same make and model of headphones can have variations in their specifications - all specifications are nominal i.e. expected with a tolerance of +/-5% usually.

    Decades ago now (1987) I built a few variations on a splitter box based on circuits published in various audio magazines and audio textbooks - the best one had each socket loaded with a 33ohm resistor on each leg containing audio (i.e. the left and right channels for each socket but not the ground line for what is hoped are obvious reasons). All resistors were matched to within 0.5% (i.e. +/-0.165ohms) What this did was ensured that the load seen by the driving device (amplifier, phone, etc.) was constant at all points in the circuit; variations in the impedance of individual headsets became a non-event.


    7 years ago on Introduction

    This looks great! Have you noticed any deminishing in the sound quiality?


    Reply 7 years ago on Introduction

    No, only the volume is slightly quieter with two headhones pluged in.