QSC AD-P4T AcousticDesign 2-Way 4-Inch Pendant Loudspeaker (Black)The QSC AcousticDesign AD P4T is a 4. 5" two way pendant mount loudspeaker ideally suited for a wide variety of foreground and background sound reinforcement applications which utilize 70 100V or 16? bypass configurations. Features: Consistent tonal characteristics across the entire AcousticDesign family in surface, ceiling, and pendant applications DMT (Directivity Matched Transition) waveguide ensures smooth, uniform frequency response over the