This is an "easy to use" music player with a reasonable sound quality. The main objective at the start of the project was that the box had to have only one cable, the mains. The way to achieve this was putting a chromecast audio inside the box. The rest of the electronics are just a low budget ebay class D amplifier and the power supply.

Step 1: Bill of Materials


2x 800x600x10[mm] playwood, €14.5.

2x 2400x33x9[mm] samba wood strip, €5.9.

2x 2400x98x9[mm] samba wood strip, €11.9.

Speakers, €26,90.

Chromecast Audio, 39.

Amplifier, $9.96.

Rotary Switch for volume, 2 pole 6 shorting (make before break), $9.

Power Switch, €4. Local store.

Grill Fabric, €4. Ikea.

Transformer, €0. From an old halogen ceiling lamp: toroidal, 230:12,200VA.

Power supply parts, aprox. €10. From scrap and e bay.

TOTAL: €140.

Step 2: Enclosure Design

The loudspeaker enclosure type I have chosen is sealed instead of ported so, the only parameter to dimmension is the volume of the box.

Step 3: Playwood Frame Building

The frame is joined with nails and glue.

Step 4: Covering With Samba Strips

The strips are fastened from inside the box with screws.

Step 5: Building the Speaker Holders

Step 6: Building and Attaching the Feet

Feet are made using a plug cutter and remaining samba wood.

Step 7: Building the Front Panel

Step 8: Fuse Holder, Mains Cable Hole and Transformer Holder

Step 9: Varnishing

Step 10: Foaming the Speakers

Step 11: Building the Grill

Step 12: Wiring and Assembling Electronics

The volume potentiometer has been substituited by a 6 positions 2 circuits switch that also has been wired to allow easy assembly in the front panel.

Maker Olympics Contest 2016

Participated in the
Maker Olympics Contest 2016

Wood Contest 2016

Participated in the
Wood Contest 2016