Correction
I should have said: I assume that the bottom of Jantzen coil (see earlier photo) is the North/negative side.
But after thinking about it, I doubt that a north or south side even exists. The mag pulsers (like the Beck Pulser and the Sota mag pulser) use a transformer and a capacitor to send forth a pulse of electricity to the coil. This creates a magnetic pulse which has a north and a south field.
But the audio amp version we're discussing is not that type and thus doesn't have a north or south side. Which would explain why the coil neither repels nor attacks my neodymium magnet. Rather, it causes an on/off or to/fro motion.
I think this confirms it:
"A pulse wave is a type of waveform. In particular, it is one that only has two possible states: on or off. ... A square wave is one example of a pulse wave. To be exact, a square wave is a pulse wave which spends exactly the same amount of time in the off position as it does in the on position."
http://bytenoise.co.uk/Pulse_wave
The fact that we're dealing with frequencies and not huge bursts of energy explains why thousands of pulses per minute can be sent to the coil.
The more I learn, the more I realize I don't know much. ![blush blush](http://www.curezone.org/ckeditor/plugins/smiley/images/embarrassed_smile.gif)