I am making my own subwooferI have detailed plans along with the resources, and I know what I am doingPlease don't tell me it's a waste of my time or too complicatedAnyways I need a little help making the voice coilI have 3 N42 Neo Magnets 1-1/2quot; x 1/2quot; which the voice coil will surroundFirst off, do I need to wrap the coil around alluminum or will cardboard work (like a TP roll?)Next, I don't see how the voice coil will have 2 terminalsTo start the coil you have to glue down 1 end, and after wrapping up layers, that end would be covered right? So where does the 2nd end come from? Any help is appriciatedThank you
Most commercial speakers use multiple strands of very fine wire to carry the current to the voice coil to allow it to move to produce that big bassSubwoofers have ligher displacements compared to other speakersThen use a heavier solid wire for the coil itselfLeave a spot to connect this wire to the start of the coil and use a similar flexible wire at the end of the coilYou do not want to leave an aluminum tube in the coil because eddy currents will be induced in the aluminumThink of it as a big shorted turn that will suck up your audio powerYou could cut a slot in it along one side (parallel to the axis) to break the shorted turn.
