Eight inch (10oz) cone driver with two voice coils for use in commercial, industrial and institutional facilities where individual speakers must be connected to two separate or "piggy-backed" systems. This two circuit, dual-purpose voice paging and signal reproduction approach was popular in older systems so this driver is often specified for replacement purposes. Today most dual-function systems use head-end electronics to perform switching and/or ducking functions between separate paging and music sources. This eliminates dual wiring to the speakers and allows for a more versatile selection of drivers to meet application needs.