Retro Beats [DIY Bluetooth Headphones]

This instructable will guide you through my process of making custom Bluetooth headphones.

I chose a classic set of Pioneer SE-50's for this venture.

I picked them up on eBay for 20$ USD.

They were in good shape with exception to a broken headphone chord...perfect.

Parts List:

Pioneer SE-50 Headphones

https://www.head-fi.org

This will replace the broken micro USB connector on the old charging cable I had.

Black Plastic Housing 3.5mm Audio Jack

KRC-86B Bluetooth Module

https://www.amazon.com/Aideepen-KRC-86B-Bluetooth-...

3V-6V TDA1308 Headphone Amplifier Board AB Amp Preamplifier Module Hot

Since the output of the KRC-86b is line level, this will boost the signal to headphone volume levels.

ADAFRUIT INDUSTRIES 1578 Lithium Ion Polymer Battery - 3.7v 500mAh
https://www.amazon.com/ADAFRUIT-INDUSTRIES-1578-Li...

Main Power and Audio Backbone

I picked these components as quality sound, long use duration, and safety were my primary concerns.

Opening the headphones up to address fitment concerns.

The assembly of the circuit.

Each Driver had enough room to fit the components nicely.

I had to add a headphone amp board for sufficient volumes.

I chose a tda 1308

Connection Flow:

1. Lipo Charger [mini lipo v1] + and - OUT to Bluetooth [Krc-86B] Power IN + and -

2. Bluetooth [Krc-86B] Power + and - to headphone amp board Power IN + and - [tda1308]

3. Bluetooth [Krc-86B] audio OUT to headphone amp board audio IN + and - [tda1308]

4. Headphone amp [tda1308] audio OUT + and - to headphone drivers + and - [Pioneer SE-50]

5.1/8 panel connector [not pictured] + and - to the DC IN + and - of the Lipo charger [mini lipo v1]

6. Cell [ Ada Fruit 1578] to Lipo charger [mini lipo v1] header

7. Reassembly.

They're a little dirty, however for their age not too bad.

I will be taking them to a shoemaker to see if they can replace this white material and recover the ear pads.

They sound great on classic recordings, however, they lack modern sub bass levels.

I personally enjoyed this project as both a tech and also as an audiophile.

Now if you don't mind, I have a date with The Steve Miller Band and ELO.

I hope you enjoyed this instructable.