111C

About the 111C

The Western Electric 111C is a 1:1 relay transformer, meaning it has a primary to secondary turns ratio of 1:1. This transformer is often used in audio circuits for signal isolation and impedance matching. It is electrostatically shielded, which helps reduce electromagnetic interference (EMI) and ensures a cleaner signal. The 111C can handle input levels up to +30dBm and operates within a frequency range of 30 Hz to 15 kHz, making it suitable for a variety of audio applications, including use in DI boxes and as a component in passive audio circuits.