Made with a revolutionary carbon-infused thermoset composite material and featuring an unprecedented dual-horn arrangement, the P-39F represents the latest advancement in horn technology. Inside the proprietary tweeter assembly, a uniquely chambered phase plug and Tractrix® horn combination deliver extended high-frequency response. A second 90^o x 60^o acoustically dampened Tractrix horn is coupled to the midrange driver for optimal performance over midrange frequencies. The result is a remarkably precise and detailed window into your music.