GoldenEar Invisa Home Theater Reference 7000 – GoldenEar Technology was one of the first companies to emphasize that in-ceiling speakers provide a convenient means to deliver immersive audio. Designed to serve as a left, center, right, surround or height speaker, the Invisa Home Theater Reference 7000 is an 8-ohm 90dB efficient loudspeaker that employs a 7-inch midrange driver and GoldenEar’s High-Velocity Folded Ribbon Tweeter. The speaker’s frequency response is 25Hz to 35kHz. goldenear.com