The SR-1590 cinema surround Loudspeaker features a high-power, long-throw 15" (380 mm) low-frequency transducer with a coaxially-mounted titanium diaphragm compression driver with 3" voice coil. The coaxial alignment of the drivers occupies less baffle area compared to traditional over-under driver designs, reducing the size of the cabinet while maximizing output capability. Coaxial alignment also creates a point source radiation characteristic, so all frequencies are perfectly aligned through the crossover region, resulting in better sound quality. Since the coaxial driver inherently produces a conical dispersion pattern, the enclosure can be rotated without any effect on the coverage pattern.

The loudspeaker’s 4 ohm impedance rating allows it to draw more power from the amplifier compared to an 8 ohm loudspeaker. For object-based immersive audio formats where each surround loudspeaker requires its own separate channel, this means more power will be delivered to each loudspeaker, allowing them to produce maximum output from lower-powered multi-channel amplifiers. The 500 watt continuous power rating and sophisticated crossover with protection circuitry provides absolute reliability.