The P Audio BM-D450S is a large format compression driver that utilizes a precision formed diaphragm assembly. The titanium 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 BM-D450S has an operating range of 1500Hz to 20000Hz and is ideally suited for two way and three way high frequency applications in professional sound reinforcement systems.