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The sine wave ranges from the maximum to the minimum power (0v), at a frequency of 2000 hz, with a peak voltage of about 4.3Volts, 30ma (this may be inaccurate, my equipment is not the most accurate)
2khz was just a testing frequency. It could go as high as 40khz for sure and possably upto 220.5khz. The LED can light up with power from a battey.
Is it possable the minimum value in an audio stream means negitive, and the AC-like power configuration is preventing the LED from lighting up. I've heard LEDs cant run on AC
After using a set of headphones as the new connector, I was able to get it to light up.