Difference Between Single Voice Coil (SVC) and Dual Voice Coil (DVC) Fusion® Subwoofers

Single Voice Coil

A single voice coil (SVC) sub-woofer has one coil which utilizes a length of insulated copper wire wound onto a circular former with one positive (+) and one negative (-) terminal. Most SVC sub-woofers have a 4 Ohm impedance.

Dual Voice Coil

A dual voice coil (DVC) sub-woofer has two separate coils of insulated copper wire wound on top of each other and has two positive (+) and two negative (-) terminals; one pair for each coil. Dual 2 Ohm coils are the most popular for presenting a 1 Ohm load to a Class-D amplifier.