The DLS4 was specially designed for use in low ceiling paging and background music applications such as airports where wide dispersion, high efficiency and ease of installation are required. The DLS4 is also well suited for use in rail stations, retail stores and hospitality applications. The system consists of 4" high efficiency driver with a unique (patent pending) tap selector switch design to allow for easy system tuning. A full selection of taps up to 8 watts as well as an 8 ohm bypass setting is included for maximum system versatility. This switch "knob" also functions as a diffuser cone, providing smooth, even dispersion of the high frequency content from the center of the 4" driver.