The TK-150 is a 70V/100V audio transformer kit designed for compatible EVC, EVF, and EVH loudspeakers. It enables these speakers to be used in distributed audio systems, making it suitable for installations in houses of worship, conference centers, commercial buildings, and other venues requiring multiple loudspeakers on a constant-voltage line.

The transformer mounts directly to the loudspeaker’s input panel for integration with the compatible enclosure. With a 150W tap for 70.7V systems and additional power taps for 70V/100V operation, the TK-150 supports flexible system configuration to suit different installation requirements.

When paired with Electro-Voice loudspeakers featuring Automatic Saturation Compensation (ASC), the TK-150 helps preserve low-frequency performance while maintaining a stable amplifier load when multiple transformer-equipped speakers are connected in parallel.