Single 12” two-way passive loudspeaker serves as a surround sound source module for larger auditoriums. It's high frequency section features a high performance PRD500 planar ribbon transducer. The unique design and properties of the planar ribbon driver allows for a very clear delivery and transient accuracy even at the limits of its performance. The PRD500 is contained within a 90 degree die cast aluminum waveguide rotated so that the 90 degree pattern is in the vertical plane. It contains an audiophile grade crossover delivering smooth response and consistent polar patterns throughout the crossover region.