The P Audio PHT-409 is a medium format horn tweeter that utilizes a precision formed diaphragm assembly. The P.E.I. diaphragm is precision formed to insure excellent consistency and performance. The diaphragm assembly is close spaced to a precision phase plug to insure excellent acoustic loading. The PHT-409 has an operating range of 2500Hz to 20000Hz and is ideally suited for two way and three way high frequency applications in professional sound reinforcement systems.