To order a new voice coil, measure your original voice coil for this info: 1) inside diameter (ie 1.518, 2.018- use a caliper) 2) length of former 3) length of windings 4) layers : 2 layer single- or 4 layer single- or 4 layer dual 5) impedance
- measure length of former
- measure inside diameter of voice coil former
- measure winding width



