This NL4 cable is used in audio systems that require extended speaker cable runs between amplifiers and loudspeakers. At 50', it supports flexible system layouts in larger venues or installations where equipment and speakers are positioned farther apart. The cable is terminated with NL4-style locking connectors that are designed to stay securely engaged during normal operation, helping maintain consistent connections over long distances. This length is commonly selected for live sound, permanent installations, and portable PA systems.