Apart T20IP Waterproof Transformer 8Ω to 100V Tapped to 20/10/5/2.5W
The T20IP is a small built-in 100 volt line transformer, designed to make it possible to convert a standard 8 ohms loudspeaker into a 100 volt line speaker with selectable power taps (2.5 – 5 – 10 and 20 watts in 100 volt).