Hello,
I am currently building a DIY Bluetooth speaker. I used this video as a reference: Build your own Concrete Bluetooth Speaker (how-to) - YouTube
I followed all the instructions in the video, I used all the same components (except I did my own enclosure design and used similar drivers with the same ratings). Other than that, I followed all the instructions closely, and sure enough, at the first test, everything worked perfectly.
But during the final assembly, I accidentally shorted one of the speaker output wires from the amplifier (disconnected from the drivers) with the battery pack. I saw a little spark, and since then, the speaker is playing at a very low volume.
So I bought a new amplifier (thinking the old one got fried). But after I swapped them, nothing changed. What component is damaged, then?
The speaker works normally, only the volume is low. It isn’t a transmission problem because the opening jingle is also very quiet even at full volume.
Any advice will be very much appreciated, as I am really lost at this point.
____________________
Parts list:
I am currently building a DIY Bluetooth speaker. I used this video as a reference: Build your own Concrete Bluetooth Speaker (how-to) - YouTube
I followed all the instructions in the video, I used all the same components (except I did my own enclosure design and used similar drivers with the same ratings). Other than that, I followed all the instructions closely, and sure enough, at the first test, everything worked perfectly.
But during the final assembly, I accidentally shorted one of the speaker output wires from the amplifier (disconnected from the drivers) with the battery pack. I saw a little spark, and since then, the speaker is playing at a very low volume.
So I bought a new amplifier (thinking the old one got fried). But after I swapped them, nothing changed. What component is damaged, then?
The speaker works normally, only the volume is low. It isn’t a transmission problem because the opening jingle is also very quiet even at full volume.
Any advice will be very much appreciated, as I am really lost at this point.
____________________
Parts list:
- OEP30Wx2 Audio Module Class D Digital Power Amplifier
- USB Wireless BluetoothAudio Receiver 3.5mm AUX output
- DC to DC Step-down converter
- DC-DC 5V Power Supply Module 4 Pin Isolated converter
- B50K 50K Ohm Dual Switched Potentiometer
- 21V 18650 battery pack with protection
- 2x 18W Speaker drivers
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Redo all your connections and make sure they are done well. A connection can look fine and still cause the symptoms you are experiencing due to there not being enough contact at the connection points, corrosion etc.