Dayton Audio BST-2 Tactile Bass Shaker 4 OhmAdd realism to your movies, games, and musicDelivers incredible impact without high sound pressure levelsEasy to install onto any flat surfaceHigh grade aluminum housingFrequency Response: 10-80 HzAttached 24” leadsImpedance: 4 OhmsPower handling: 35 Watts RMSPeak force: 25 lbs. per ft.Diameter: 5.16" Height: 2.17"Mounting holes: 5" center to centerWeight: 2.9 Lbs