I have this little bluetooth module (wiring guide picture attached), but I don't understand...as you can see, it only has a common ground for the left and right signal. It's then being fed into an amp that requires a Left + and -, and a Right + and -.
Do I just solder two wires to that ground and send one to the left input and one to the right? I didn't think the two signals could share the same ground.
Thanks a lot in advance!
Do I just solder two wires to that ground and send one to the left input and one to the right? I didn't think the two signals could share the same ground.
Thanks a lot in advance!
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Yes, you'll have to share the ground between both channels. If you get hum, you can use two 10 Ohm resistors
to connect each ground to the common point.
Alright, thanks again rayma. I'll go with that.
Out of curiosity, could you explain why? Other things I had read indicated that the positive lead makes the speaker cone modulate one way while the ground lead makes it modulate back the other way. If that's true, how can they both share the same ground and not be messed up?
Out of curiosity, could you explain why? Other things I had read indicated that the positive lead makes the speaker cone modulate one way while the ground lead makes it modulate back the other way. If that's true, how can they both share the same ground and not be messed up?
In general, if you have two completely isolated, floating circuits, they can be connected together at any point A on one circuit,
and any other point B on the other circuit, without changing their operation in any way. No current can flow from one circuit to the other, since current flow requires a loop. (This is disregarding parasitic coupling between the two circuits.)
In stereo circuits, you have two (more or less) identical circuits, usually connecting their commons together (often unfortunately called "ground"). Sharing their commons can allow good results, if done carefully. If not, then you can get reduced separation (crosstalk) and/or hum.
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Just wanted to say thank you again. You've been a huge help.
If it weren't for you and this forum, people like me would be absolutely clueless (I still am, but at least I can do my project now).
I need to just take a class or get a book on electronics.
If it weren't for you and this forum, people like me would be absolutely clueless (I still am, but at least I can do my project now).
I need to just take a class or get a book on electronics.