The JBL Arena 8IW in-wall speaker consists of an 8.0" polycellulose woofer with a 1" silk dome tweeter. It features a frequency response of 30 Hz to 20 kHz and a recommended amp power of 100W. The speaker's paintable magnetic grille makes it easy to blend into any décor. Can be installed alone or with optional XL-2 mounting bracket..PZA MORE SPECS