Originally Posted by Bluzlvr
To clarify when you were referring to insulation on the wire you were talking about the wire at the ferrule, correct? My eyesight isn't what it once was, but I can't believe there is any insulation on that tiny wire.
Incorrect. The magnet/coil wire is insulated.
Most types need to be stripped BEFORE soldering, some types (Solderon) don't. You might be able to solder it, but without stripping the insulation it's likely you won't have continuity in the joint, and no sound.
Some people burn the insulation off; never tried that myself.
I use about a 1 square inch piece of 400 wet or dry sandpaper folded over on itself and hold the wire in there with one hand, and pull the wire through with the other hand. It WILL SNAP easily, which is why I suggested a few inches of extra wire to practice with. The trick is getting the stripped part to end up in the eyelet so when you solder the lead you'll make a connection.
Check with a DMM BEFORE soldering. If you get no reading on the coil, it probably isn't ready.