Polk Audio TC65i Rectangular 2-way In-Wall Loudspeaker (Single) Single rectangular 2-way in-wall loudspeaker for custom installed sound systems Equipped with one 6.5-inch dynamic balance mineral/polymer composite driver with rubber surrounds Frequency response: 32Hz-27kHz Equipped with an aimable 1-inch silk dome tweeter with neodymium magnet Durable, moisture-resistant materials for safe use in kitchen, bath and sauna