Home » JA Audio Products » Powered Subwoofers » JA-850S JA-850S MANUFACTURER SUGGESTED RETAIL PRICE $299.95 DESCRIPTION JA-850S use a downward-firing, acoustic-suspension woofer in a cube-shaped cabinet that will fit gracefully into a wide variety of rooms and can be hidden behind a plant or sofa. The JA-850S can reproduce bass down to 40Hz. It has features bass level controls, letting you crank it up for movies and turn it down for music-listening, as you prefer. It is suitable for use even in large rooms and with powerful systems, and it will please most bass. SPECIFICATIONS 8" ACOUSTIC-SUSPENSION WOOFER Finish: Black wood grain  Nominal Impedance: 6 Ohm  Frequency Response: 40Hz - 350Hz  Crossover Frequency: 40Hz - 180Hz  RMS Power Rating: 55 - 85 watts  Connections: RCA jacks & spring terminals  Controls: Power, volume and crossover frequency