Return to: 18 Home Theater Accessories that Enhance Performance Previous Slide Next Slide StraightWire Soundstage SC Speaker Cables: StraightWire’s Soundstage SC utilizes an eight-conductor OFHC helix design that it says help the cables to produce accurate midrange and focused high frequencies. The cable also employs Polypropylene insulation, and a low-density mechanical core. Return To: 18 Home Theater Accessories that Enhance Performance