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In this video I am showing you in detail how to make a proper 100W (50Wx2) Bluetooth speaker using TDA7492 Class D Power Amplifier and four 8Ω speakers. I have included the circuit diagram and wiring connections in the video. Used dc/dc isolator B0505S to avoid ground loop/ "hum" effect.
Parts Required:
1) 50K Dual potentiometer with switch (Volume Control Potentiometer) - ebay.to/2LfK3G6
2) TDA7492 50Wx2 Sound Amplifier - ebay.to/30veZpw
3) 5V Bluetooth 4.1 Audio Receiver Board - ebay.to/2S6fDGH
4) B0505S-1W DC-DC 5V Power Supply Module 4 Pin Isolated converter - ebay.to/2JpsUYh
5) 12V On/Off Switch - ebay.to/32hUwGi
6) LM2596S Step Down Module - bit.ly/2XWnI6f
7) 8 Ohms 15W 3inch full-range Woofer Speaker - ebay.to/2FNbK54
8) 4"inch 105mm 8ohm 8Ω 30W speaker - ebay.to/2XZxKDC
9) Speaker Port Tube Bass Reflex Connector 3-5" 35x80mm - ebay.to/2LhITKa
10) 12V 7AH Battery
11) Wires & Screws
12) Speaker Seal Tape
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