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I'm building my own Bluetooth audio receiver using a Bluetooth module 2.1 with A2DP, so I can connect the receiver (with internal power) to any set of speakers that has a 3.5mm jack, then play music via any Bluetooth device like iPhone or PC.

I got the Bluetooth module wired up and can now be paired with any A2DP enabled device, the issues is, the Bluetooth module has output connectors for 2 audio channels: Left Positive, Left Negative, Right Positive, and Right Negative, my question is how do I connect the 2 channels to a female 3.5mm jack? do I need something like a summing box (which I don't really understand yet), or is there a simple way to solve this? I hope to keep the entire receiver small.

P.s. I initially thought the two negatives are two ground so I solder them together to the sleeve of the TRS, but then the module won't turn on. Further testing found that whenever the 2 negative touch the Bluetooth would shot-out and shut-off. If I just connect one of the negative then I have sound coming out of both speakers, but then I think there would be no difference between left and right sounds.

Thank you.

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closed as not a real question by W5VO Nov 2 '12 at 1:57

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.

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    \$\begingroup\$ What is the manufacturer and part number of the Bluetooth module you're using? \$\endgroup\$ – Dave Tweed Aug 29 '12 at 22:03

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