Episode® CORE 1 Series In-Ceiling Speaker (Pair) The all-new Episode CORE Series delivers stunning sound at a great price without sacrificing performance. With a comprehensive line of in-wall and in-ceiling speakers, including all-weather and dual voice coil/surround hybrid models, you can deliver an immersive audio experience and excellent value. Our competitive pricing combined with our award-winning programs, service & support, plus online and local shopping experience make the Episode CORE Series the perfect choice for your business.