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Voice coil shims are used during speaker repair, recone work, and loudspeaker assembly.
These shims help keep the voice coil accurately centered in the magnetic gap while the spider, cone, surround, and other components are being glued. Proper centering helps prevent voice coil rubbing and improves speaker reliability after repair.
Voice coil shims can be used with woofers, subwoofers, midrange speakers, and other driver types. Choosing the correct shim thickness depends on the voice coil diameter and magnetic gap clearance.
They are simple but essential tools for professional speaker repair and recone work.