This is a docking station that looks like and old radio
Step 1: Source Your Boombox
I got this one at the dump for free
Step 2: Tare Down
I opened it up broke out a section of the circuit board to fit all of my wiring. I left the other half in because it was attached to the face of the boombox which I wanted to leave
Step 3: Get Your Speaker
I used the one that came with the original boom box so it sounded original plus it used the least power. I planned to power it off my phone. It worked in the end but and amp circuit could be built to further bump up the volume.
Step 4: Wire Your Speaker
I used a standard 3.5mm headphone jack. There are a lot of useful videos like this one on how two wire speakers
Step 5: Add Packing
I used cotton to reduce echo and lower bass so it didn't overshadow the lyrics.
Step 6: Finish It Up
I fed my wire through the original power cable hole and to finish it I through a coat of english chestnut stain.