FDM Speaker Experiment

Maker's Log, 20190525: I haven't got back to this because of a number of other more general, household printing jobs and lately, I had to rebuild my printer because of an extruder driver blowout on my Melzi board. The subsequent RAMPS/Marlin rebuild is taken longer than anticipated and I'm not sure I could even come close to the build quality of the initial diaphragm test print. So, while I seriously want to finish this project, my Tronxy built i3 clone is standing in the way of too many projects at the moment. More news as it comes to hand.

Update 4: worked out that, to get around 8 ohms impedance, I need about 600+ turns of wire. (672 turns for 8 ohms resistance, but the impedance and inter-turn capacitance will account for some of the 8 ohms load.) Most speakers have a DC resistance typically around 3/4 of their rated impedance, bringing the number of turns theoretically down to 488. The winding will fit on the voice coil easily enough. Just got to wait for the tiny neo magnet an