I'm building a Bluetooth receiver from Bluetooth neckband circuit. i have to connect the output to 3.5 port so that I can plugin all wired earphones.
I have identified both Right side (R-) & Left side(L-) is uncommon. My multimeter didn't found any ground connection.
I merged Right side (R-) & Left side(L-) and connected to the speakers. It sounds ok but when I do right /left stereo check, it didn't perform good. while testing, there was a leak audio on the other side against the playing side.
please share your suggestion/solution.
I have identified both Right side (R-) & Left side(L-) is uncommon. My multimeter didn't found any ground connection.
I merged Right side (R-) & Left side(L-) and connected to the speakers. It sounds ok but when I do right /left stereo check, it didn't perform good. while testing, there was a leak audio on the other side against the playing side.
please share your suggestion/solution.
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Thanks for the comment. could you please tell how to convert this audio output to make common ground?
I don't know a whole lot about this. If you can find a signal ground in your device, you might use that with (+), and ignore (-). I think the technically correct way to do it is connect (+) and (-) to a center tapped transformer of the correct impedance for your device, and the center becomes ground. That may or may not be a good fit for your project based on size or expense. Search online for "convert balanced to unbalanced audio signal" for more info.
You can't.
Best you can do is to split your headphones so right and left transducers have 2 wires each, + and -
That's how your headband is wired.