Little G

Little G


Project Category:
Portable Speakers

Project Level:

Project Time:
8-20 Hours

Project Cost:
Under $100

Project Description:
Small boombox for the the home and patio

Design Goals:
Mid century looks and good sound

Driver Selection:

Enclosure Design:
Plywood inners with poplar exterior

Crossover Design:
Simple butt joints

Works well but, I ran out of room for my ports. Live and learn. This was my first attempt at one of these

About the Designer:
Newbie audio guy from Dallas. I’m more of a woodworker. Teaching myself how to make these and I’ll be stepping it up as we go.

Project Parts List:

Dayton Audio KAB-FC Function Cables Package for Bluetooth Amplifier Boards
Dayton Audio KAB-BE 18650 Battery Extension Board for Bluetooth Amplifier Boards
Dayton Audio KAB-250 2x50W Class D Audio Amplifier Board with Bluetooth 4.0
2.5mm Panel Mount DC Jack
19 VDC 4.8A Switching Power Supply with 2.5 x 5.5mm Center Positive Plug
SPST Square Push Button Switch Click On/Click Off


Add yours
  1. 3

    More of a woodworker than an audio guy but learning. I love the KAB-250 with the battery (kab-be) but I’m still struggling with how it all gets wired together. Do you wire the jack to the KAB-250 and use the four cable battery connecter to charge and for portability or do you wire straight to the batter on one pair of the four wire leads and wire the other pair to the 250?

    I wish there was a wiring diagram that showed the proper way to do this when you have both the KAB-2xx and the KAB-BE!

    Looks good though! Definitely solved some enclosure issues. I just built a pair of Madeleines for the adult kids for Xmas.

    • 4
      Grant Treanor

      There is a wiring guild on the board’s page. You really can’t screw it up. I wired the female power jack to the power cable/wires proved. The battery is plug and play on separate cable connections. It will charge the batteries the the 12v cord. I’m a wood worker too and NOT Mr electronics. That’s why I use the KAB family of products…plug and play. Then it really becomes all about design and how cool you can make your enclosure/box.

    • 5
      Grant Treanor

      the difference between 3″ and 4″ speakers is totally worth it. I’m not sure I’ll go with the 3″ again unless I’m trying to make a really small unit.

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