How To Open Cone Throat for Larger Voice Coil

Use voice coil to outline the voice coil opening required on the cone. With a utility blade or exacto knife, cut cone throat to desired size. Smooth and enlarge the opening with the back of thumb nail until voice coil passes smoothly through the opening. If two cones require vc enlargement, use first cone as a template for second cone.

cone- open larger vc size 001

cone- open larger vc size 002cone- open larger vc size 008 cone- open larger vc size 004cone- open larger vc size 003cone- open larger vc size 005cone- open larger vc size 007 cone- open larger vc size 006