The Multi-Application Series 6.5” 70/25V In-Wall Speaker from Speco Technologies is an all-in-one pre-assembled unit with back can and mounted transformer. It features a quick-flip 70 or 25V selector switch and an easy-select transformer wattage dial. The 8 individual wattage tap settings cover a complete range of uses. This flame-retardant ABS unit also comes with insulated wires and built-in, easy-mount tabs for securing the unit. The furnished 8 ohm tap selector also means the speakers can be kept on-hand for unexpected residential installation needs.