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DIY 20w stereo bluetooth speaker with track controls in a sound-deadening concrete enclosure

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jarpoole/bluetooth-speaker

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bluetooth-speaker

20w stereo bluetooth speaker. Enclosure is cast concrete with the goal to minimize cabinet vibrations.

Features

  1. Track controls (play/pause, next/previous track)
  2. Physical volume knob with built-in power switch
  3. Standard 12v barrel jack power input

speaker

BOM

Image Description Quantity Link
buck DC-DC Buck Converter Step Down Module 4.75V-23V to 1V-17V 17x11x3.8mm SG125-SZ+ 1 aliexpress
amplifier OEP30Wx2 Audio Module Class D Digital Power Amplifier Board Replace TDA8932O 1 aliexpress
bluetooth KRC-86B Bluetooth 4.0 Stereo Audio Receiver Module Board 1 ebay
knob Control Volume Rotary Digital potentiometer Knob Cap 6MM Shaft hole 4PCS 1 ebay
speaker DROK 15W Mini 3'' HiFi Full Range Speaker 4 Ohm Anti-magnetic Audio 2.0/2.1 Home Stereo Woofer Loudspeaker 90dB High Sensitivity for DIY Boombox Satellites Speaker 2 drok
plug 30cm extension connect wire 5.5*2.1mm Female & male Cable Plug Wire Power Socket for strip CCTV Camera DC 12V 1 aliexpress
button 12mm Ring LED Waterproof Momentary Metal Push Button Switch LED Light Shine Car Horn Auto Reset 3 aliexpress
potentiometer B50K 50K Ohm Dual Linear Taper Volume Control Switches Potentiometer Switch 1 ebay

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DIY 20w stereo bluetooth speaker with track controls in a sound-deadening concrete enclosure

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