Product DescriptionThe unique Nested-Chamber design and Linear Dynamic™ port of the JBL Control 19CS subwoofer allow powerful low-frequency reinforcement from a compact in-ceiling enclosure. The Control 19CS is an ideal addition to any system, resulting in full-fidelity, high level sound. Includes steel back-can with removable locking connector. Specifications: *Frequency response: 42 Hz to 200 Hz (-10 dB) *Power handling: 140 watts continuous program power (70W pink noise) *Sensitivity: 95 dB (1W/1m) *Nominal impedance: 8 ohms * Dimensions: 13.6' x 13.6'.