Bogen Signature S4T & S5T Loudspeakers are compact, versatile, and feature unique driver technologies which produce impeccable sound quality. With their compact form factor, these speakers are an excellent fit for most indoor environments or protected outdoor locations. By using the latest Ferrofluid formulations and robust, oversized, voice coils, the Bogen Signature speakers provide exceptionally high thermal endurance for unmatched long-term power handling and durability. The proprietary MDT metal-alloy cone structure and spiderless MLS driver technology combine to create not only a sonically exceptional loudspeaker, but one which is highly resistant to moisture, humidity, heat, cold, salt, chlorine, and many other common environmental assaults. Designed to both sound and look great, these speakers employ unique MDT and MLS technologies; thick-walled, low-resonance ABS enclosures; scratch-resistant, powder-coated aluminum grilles; and compact, powder-coated cast aluminum swivel mounts.