The Speco Technologies T7010 line transformer is designed to convert an 8-ohm speaker to 70V format for use with constant voltage amplifiers in commercial installations. With power taps of 10, 5, 2.5, 1, 0.5, and 0.25 watts and color-coded wiring, the T7010 simplifies the process of connecting your 8-ohm speaker to your 70V amplifier.