07-29-2014, 01:41 PM
You do not need to unwind anything.
1. Worst case a speaker works without it, just more hum.
2. Simply take a piece of regular multi-strand wire, make as many turns around the field coil as there were originally (I think it is very few, ideally as many as there are turns in the voice coil which is never many) and connect it in series with the voice coil.
Determine the polarity by switching the ends and seeing where the hum increases or decreases.
1. Worst case a speaker works without it, just more hum.
2. Simply take a piece of regular multi-strand wire, make as many turns around the field coil as there were originally (I think it is very few, ideally as many as there are turns in the voice coil which is never many) and connect it in series with the voice coil.
Determine the polarity by switching the ends and seeing where the hum increases or decreases.
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