POLK AUDIO SC C In-Wall Speaker Home Audio Crossover, White (AW0355-A) Dual 5 1/4" polymer Composite midwoofers, tuned to eliminate resonances & distortion with exclusive dynamic balance technology A 3/4" silk dome tweeter, with powerful Neodymium Magnet structure, delivers detailed highs & dynamic, realistic effects Wide dispersion design guarantees uniform Sound coverage & seamless surround blending even in larger rooms Each