The Klipsch DNA, an advanced 90 X 90 TRACTRIX horn. This patented and exclusive horn technology delivers the power, detail and emotion of the live music experience with the cleanest, most natural sound possible. The horn's enlarged outer dimensions allow it to control dispersion over a wider range of frequencies, resulting in improved high-frequency dispersion and a more precise soundstage. The rear Tractrix port is perfectly matched to the enclosure and woofers, providing ideal airflow with minimal distortion or turbulence even at the lowest frequencies. High Quality Enclosure Design. Reinforced 3/4" MDF construction with an all-new bracing design reduces cabinet vibration for less audible vibration and improved sound accuracy. The MDF cabinet features a scratch-resistant wood-grain vinyl veneer.