Omnidirectional Block Design Our Home Theatre System, soundbar and optional speakers have been designed under a common Omnidirectional Block concept. The design of the SA-SW3 is a perfect match for these systems. Its sophisticated rounded edges represent a single solid block providing wide-spreading sound. The combination of rich material textures emphasises an affinity with any living room environment. Σ Magnetic Circuit for deep, powerful bass Sony’s proprietary technology, the Σ (Sigma) Magnetic Circuit enables deep, powerful bass by maximising the magnetic force that drives the voice coil. By contrast, conventionally shaped circuits let much of this magnetic force leak away.
