The RS4-EZ is a 4-inch, full-range, ported speaker with an open-ceiling enclosure design. Hanging hardware is included and features a SpeedClamp self-locking wire grip for fast, easy and secure installation. RS4-EZ speakers utilizes the patented ZeroReflection enclosure technology for optimal sound reproduction and cabinet rigidity. The easy access five-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position simplifies ordering and inventory tracking. The RS4-EZ speakers average sensitivity of 90.0 dB offers high-output capabilities and reduced amplification costs. SoundTube's custom-engineered driver and electro-acoustic network deliver high-performance sound in a cost-effective speaker design. The RS4-EZ speaker incorporates a low-profile grille and a five-position tap switch with transformer bypass position. Euroblock connector and terminal weather boot are included.