A speaker can be used as a microphone. It's not a good microphone, but it's enough to save your voice and ambient sound, but the quality is bad.
So in the best case, the energy will go from the power source of the generator to the speakers, travel through air, and be absorbed by the other speaker acting like a microphone.
If the other microphone has a signal, the signal will try to move the internal parts of the microphone in one direction and the air in the other directions (or the same direction, according to the distance and frequency). This will cause a weird movement, and the amount of current and voltage drop in the speaker will not be the usual one. Anyway, there will not be something too strange unless you have a lot of oscilloscopes recording the process.
In a more real case, some of the energy will be transformed in heat in the wires, and some energy will escape because the sound does not hit the other microphone, and you will not recover the 100% of the energy.
Energy Conservation is one of the most fundamental laws of Physics. It may be wrong, but I don't expect that this device can prove it.
Anyway, Physics is an experimental science, so you can prove that the Conservation of Energy is wrong with an experiment. But you must:
* Make a video showing it. People will claim it's fake. I'll claim it's fake! Use a signal generator that has a battery so the maximal energy in the initial system is clear. Use a lamp to show the unexpected additional energy.
* Make the instruction 100% clear. Better 200% clear. Better 1000! clear. Check with a friend that s/he can build the device and reproduce the experiment without your help. Rewrite the instructions and check with another friend until they are 1000000% clear.
* If the instructions are clear and your device work, someone will not believe the video, and not believe the instructions, and then build the device as an amusement and get a huge surprise.
As you can see, you are making a lot of shaky assumptions about physics of the process. That's good, you can't tackle it! The problem is, video is not a proof, you can find a lot of videos of "free" energy generation that are fake. Idiots created a situation where nobody believes this. It's not a violation of conservation of energy, it's a crack in physics understanding itself. I have not seen anybody experimenting with forcing physics "collapse" itself. I'm probably the first one to do it. You can't find a better system than these simple loudspeakers to try oppose physics to physics.
I'll say more about this system. As such "opposition", however small it is (no reason to talk about how much energy is lost in system), creates a "paradox" between consuming and generating, the "physics" as a system of laws experiences "stress" and tries to solve the problem by expending energy. Same happens with a human when in tries to solve an untackable, but utterly important, problem-he experiences a mental breakdown. The space may have infinite energy at its base. It just strives to keep it in balance, hence "unbreakable" law of conservation of energy exists. I do not argue with "newtonian age" laws of physics, I just propose a way to put them out of balance. I succeeded at that in my opinion. Videos can be faked, so absolutely no reason to record it. You can see a similar speaker arrangement in any "surround" consumer sound system. Nothing new, except the way to arrange and operate the sound system.
Which problems do you see in the explanation and graph? It's as easy as it can be, totally nothing fancy, you can create the system out of scrap basically.
Note that I'm not an electrical engineer and can't write diagrams. I do not have "friends" in this area.
So in the best case, the energy will go from the power source of the generator to the speakers, travel through air, and be absorbed by the other speaker acting like a microphone.
If the other microphone has a signal, the signal will try to move the internal parts of the microphone in one direction and the air in the other directions (or the same direction, according to the distance and frequency). This will cause a weird movement, and the amount of current and voltage drop in the speaker will not be the usual one. Anyway, there will not be something too strange unless you have a lot of oscilloscopes recording the process.
In a more real case, some of the energy will be transformed in heat in the wires, and some energy will escape because the sound does not hit the other microphone, and you will not recover the 100% of the energy.
Energy Conservation is one of the most fundamental laws of Physics. It may be wrong, but I don't expect that this device can prove it.
Anyway, Physics is an experimental science, so you can prove that the Conservation of Energy is wrong with an experiment. But you must:
* Make a video showing it. People will claim it's fake. I'll claim it's fake! Use a signal generator that has a battery so the maximal energy in the initial system is clear. Use a lamp to show the unexpected additional energy.
* Make the instruction 100% clear. Better 200% clear. Better 1000! clear. Check with a friend that s/he can build the device and reproduce the experiment without your help. Rewrite the instructions and check with another friend until they are 1000000% clear.
* If the instructions are clear and your device work, someone will not believe the video, and not believe the instructions, and then build the device as an amusement and get a huge surprise.